[Botany • 2026] Peperomia accentus (Piperaceae) • A New geophytic Species endemic to the Sierra Madre Occidental, Mexico

Peperomia accentus Reveles & Amancio,

 in Hurtado-Reveles, Amancio et Burgos-Hernández, 2026. 

DOI: doi.org/10.11646/phytotaxa.740.3.2

 

Abstract

Peperomia accentus is described and illustrated as a new species of Piperaceae from the state of Zacatecas, Mexico, in the Sierra Madre Occidental mountain range. This new taxon belongs to the subgenus Tildenia, which includes species characterized by their geophytic habit. It can be distinguished from its congeners mainly by the combination of roots at the apex of the globose tuber, peltate leaves, numerous simple inflorescences and flowers with long and geniculated styles of a reddish color. A preliminary threat assessment is provided for the new species based on IUCN Red List guidelines. We provide a comprehensive analysis of the distribution patterns of the Mesoamerican species of Peperomia subgenus Tildenia. Finally, we include a key for species distributed north of the Trans-Mexican Volcanic Belt.

endemic, geophyte, Neotropics, Tildenia, Magnoliids

Peperomia accentus morphology. A. General view of a flowering specimen from a lateral perspective. B. General view from an upper perspective. C. Tuber from the bottom. D. Apex of a developing inflorescence with flowers in different anthesis stages. E. Flower with mature stamens from a front and bottom perspective. F. Close-up of a mature anther. G. Sideways perspective of a flower in anthesis. H. Closeup of a receptive stigma. I. Lateral perspective of a developing fruit.

Photographs of Peperomia accentus in habitat.
A. General view of a flowering specimen. B. Mature inflorescences. C. Closeup of a single inflorescence. D. Specimen growing in a sheltered soil pocket on a rock outcrop.

Peperomia accentus Reveles & Amancio, sp. nov. 

 

Diagnosis:—Peperomia accentus can be differentiated from the rest of the geophytic species of Peperomia subgenus Tildenia by the following combination of characters: globose tubers without trunk-like outgrowths, green to wine-colored inflorescences (green to black in sicco), and flowers with geniculate styles 1.5–2.5 mm long, which remain longer than the ovaries after anthesis, persistent in fruit. 

Etymology:—The specific epithet alludes to the common shape of the pistil in developing flowers: a wavy line which resembles a tilde (~). Tildes are graphemes commonly used as diacritic (accent) in several scripts.

Leopoldo HURTADO-REVELES, Guadalupe AMANCIO and Mireya BURGOS-HERNÁNDEZ. 2026. Peperomia accentus (Piperaceae), A New geophytic Species endemic to the Sierra Madre Occidental, Mexico.  Phytotaxa. 740(3); 237-247. DOI: doi.org/10.11646/phytotaxa.740.3.2 [2026-02-10]

[Botany • 2026] Peperomia kauaiana (Piperaceae) • A New alternate-leaved Species from Kaua‘i, Hawaiian Islands and Notes on two possibly extinct Hawaiian Peperomia

Peperomia kauaiana  K.R.Wood & W.L.Wagner, 

in Wood, Wagner, et Fawcett, 2026. 

DOI: doi.org/10.3897/phytokeys.269.173971

 

Abstract

A new species of Peperomia with alternate leaves from Kaua‘i, Hawaiian Islands, is described and illustrated, with notes on its conservation status, distribution and ecology. We present a dichotomous key to all five Hawaiian Peperomia species with alternate leaves and include notes on two possibly extinct Hawaiian Peperomia species, namely P. degeneri and P. subpetiolata. Peperomia kauaiana sp. nov. differs morphologically from its Hawaiian congeners by its unique combination of diminutive leaves 5–14(–18) mm long, 4–11(–14) mm wide, palmately 5- to 7-nerved, ovate to ovate-orbicular with margins revolute, petioles 2–5 mm long and spikes 11–17(–22) mm long. Plants have been documented in three distinct windward Kaua‘i locations to date, including the southern ridges of Wahiawa, the central ridges of Wai‘ahi and the north-eastern ridges of the Makaleha Mountains. Peperomia kauaiana represents a newly-described wet forest species endemic to the island of Kaua‘i and is currently in need of conservation. Its discovery raises the total number of endemic Hawaiian Peperomia species to 24 and single-island endemic Peperomia on Kaua‘i to three.

Key words: ‘ala‘ala wai nui, endangered species, Hawaiian flora, pepper family, plant extinction prevention, single-island endemism, subgenus Micropiper

A–C. Peperomia kauaiana, fertile plants in situ, decumbent to sub-erect habit with terminal spikes, terrestrial in moss; D. View from Kawaikini looking south along the windward ridgeline of eastern Kaua‘i showing buttressed ridges descending to the east (left), which are prime habitat for Peperomia kauaiana.

Field photos: A, B Wai‘ahi, 4 Apr 2019, Wood et al. 18149 C Wai‘ahi, 22 Oct 2020, Wood et al. 18580 D photo taken 28 Jan 2022.

 

 Peperomia kauaiana K.R.Wood & W.L.Wagner, sp. nov.

 

Diagnosis. Peperomia kauaiana is morphologically most similar to P. degeneri Yunck. from which it differs by the following combination of characteristics: stem internodes 3–5 mm long (vs. 10–15 mm long), leaves 5- to 7-nerved, ovate to ovate-orbicular, 0.5–1.4(–1.8) cm long, margins revolute (vs. leaves 3-nerved, elliptic to oblong-elliptic, 1.5–2(–3.5) cm long, margins flat), petioles 0.2–0.5 cm long (vs. petioles 0.8–1.2 cm long) and spikes 1.1–1.7(–2.2) cm long (vs. spikes 2.5–4.8 cm long).

Etymology. The epithet refers to the island of Kaua‘i, oldest and most floristically rich of all the high Hawaiian Islands and the only known location for Peperomia kauaiana.

Vernacular name. ‘Ala‘ala wai nui is the Hawaiian name for related species. Hawaiians used the ash of their burned leaves and stems as a grey-green dye in kapa making (Krauss 2001).

Kenneth R. Wood, Warren L. Wagner, Susan Fawcett. 2026. Peperomia kauaiana (Piperaceae), A New alternate-leaved Species from Kaua‘i, Hawaiian Islands and Notes on two possibly extinct Hawaiian Peperomia. PhytoKeys. 269: 113-129. DOI: doi.org/10.3897/phytokeys.269.173971

[Botany • 2022] Piper nokaidoyitau, P. velae, ... • New Piper Species (Piperaceae) from the eastern slopes of the Andes in northern South America

in W. Trujillo, E. Trujillo, Ortiz-Morea, Toro et Jaramillo, 2022.

DOI: 10.3897/phytokeys.206.75971

 

Abstract

We describe four new species of Piper from the Amazonian slopes of the northern Andes. Piper hoyoscardozii is distinguished from similar climbing species, P. dryadum and P. flagellicuspe, by its longer peduncles. The Amazonian species Piper indiwasii is distinguished from P. scutilimbum from Panama and northern Colombia by the narrowly spatulate leaf base extension. Piper nokaidoyitau is characterised by the presence of larger leaves and longer spikes than similar species, P. anonifolium and P. hostmannianum. Finally, P. velae is characterised by cordulate leaf bases in all nodes, petioles 0.8–1.5 cm long and pubescent fruits, which easily distinguish it from the related species, P. holdridgeanum.

Keywords: Colombia, Ecuador, north-western Amazon, Peru, Piper hoyoscardozii, Piper indiwasii, Piper nokaidoyitau, Piper velae, Piperaceae

William Trujillo, Edwin Trujillo Trujillo, Fausto Andrés Ortiz-Morea, Diego A. Toro and M. Alejandra Jaramillo. 2022. New Piper Species from the eastern slopes of the Andes in northern South America. PhytoKeys. 206: 25-48. DOI: 10.3897/phytokeys.206.75971

[Botany • 2025] Piper hongheense (Piperaceae) • A New Species from Yunnan, China

 

Piper hongheense W.J. Zhao, C.Y. Hao & N.H. Xia, 

in Fan, Zhao, F. Su, Li, Ji, B.-F. Su, Xia et Hao, 2025.

DOI: doi.org/10.11646/phytotaxa.697.1.9

Photographs by R. Fan & C.Y. Hao, Illustration by F. Su

Abstract

Piper hongheense (Piperaceae), a new species from Yunnan Province of China, is here described and illustrated. Morphologically it is similar to Piper boehmeriifolium and Piper boehmeriifolium var. glabricaule, from which it can be easily distinguished by the combination of characters: height 0.7–1 m, leaves oblong-lanceolate to lanceolate, 10–16 cm × 2.5–4 cm, infructescences ±0.6 cm in diam., berries and bracts white when mature. The description of the new species includes photographs, a detailed description, notes on etymology, distribution and habitat, as well as a comparison with morphologically similar species.

Magnoliids, Asia, Honghe Prefecture, morphology, taxonomy, tropical flora

Line drawing of Piper hongheense W.J. Zhao, C.Y. Hao & N.H. Xia.
A branch with female infructescence; B adaxial surface of monopodial leaf on the left, and abaxial surface of sympodial leaf on the right; C detail of the leaf base and the prophyll; D magnified view of male inflorescence; E magnified view of the longitudinal section of male inflorescence; F stamen; G magnified view of female inflorescence; H magnified view of infructescence.

Illustration by F. Su based on the holotype.

Piper hongheense W.J. Zhao, C.Y. Hao & N.H. Xia, sp. nov.
 A habit; B adaxial surface of leaf; C abaxial surface of leaf; D adaxial surface of leaf base and petiole; E abaxial surface of leaf base and petiole;
F male spike; G female spike; H mature infructescence; I close-up of portion of the male spike; J close-up of portion of the female spike (some bracts were removed); K close-up of portion of the mature infructescence.

Photographs by R. Fan & C.Y. Hao based on the holotype.

Piper hongheense W.J. Zhao, C.Y. Hao & N.H. Xia, sp. nov. 

Erect subshrub, 0.7–1 m high, aromatic, dioecious. Stem greenish, terete, 3–4 mm in diameter, young branchlet sparsely puberulent, glabrescent, finely striate when dry, swollen at node. Leaf dimorphism present, prophyll 1–2 cm long. Sympodial leaf membranous to chartaceous, finely glandular, oblong-lanceolate to lanceolate, 10–16 cm × 2.5–4 cm, base subequilaterally truncate to oblique, one side rounded, the other tapered and acute; apex acutely acuminate to long acuminate, adaxially green and glabrous, abaxially pale greenish and sparsely puberulent on veins; petioles glabrous, 5–7 mm long; venation plinerved, veins 5–9, reticulate, uppermost distal pair of secondary veins alternate, arising 1–3 cm above base, reaching leaf apex, others basal. Monopodial leaf exhibits morphological similarities to sympodial leaf, with the primary distinction being that the base of monopodial leaf is predominantly ...

Rui FAN, Wen-Jing ZHAO, Fan SU, Yang LI, Xun-Zhi JI, Bao-Fen SU, Nian-He XIA and Chao-Yun HAO. 2025. Piper hongheense (Piperaceae), A New Species from Yunnan, China. Phytotaxa. 697(1); 129-137. DOI: doi.org/10.11646/phytotaxa.697.1.9 [2025-04-10]

[Botany • 2025] Piper kiminensis (Piperaceae) • A New Species with shingling variegated leaves from Arunachal Pradesh, India

 Piper kiminensis  

in Gajurel, Yakang, Kashung et Borah, 2025.

 DOI: doi.lorg/10.11646/phytotaxa.689.2.10 

 facebook.com: Dipu Dipankar BORAH

 

Abstract

Piper kiminensis (Piperaceae), a new species, is described from Arunachal Pradesh, northeastern India, along with notes on its habitat, ecology, and conservation status. A dioecious, semi-woody climber with distinct dimorphic branches, it is distinguished from other climbing pipers by its vegetative branches possessing shingled, variegated leaves. The new species does share some similarities with P. obtusissimum in its vegetative branches and P. betleoides in its fertile branches, so a table with detailed morphological features for all three species is provided for easy comparison. For aid in recognition, color photographs are also included. The molecular studies based on the ITS sequence also confirmed the distinctness of the new species from other taxa. Moreover, it shows little similarity with any of the existing Piper species.

Conservation, Critically Endangered, Dioecious, Kimin, Papum Pare, Taxonomy, molecular phylogeny, Magnoliids

  

Piper kiminensis sp. nov. 

Padma Raj GAJUREL, Tage YAKANG, Soyala KASHUNG and Dipankar BORAH. 2025. Piper kiminensis (Piperaceae) A New Species with shingling variegated leaves from Arunachal Pradesh, India.  Phytotaxa. 689(2); 269-276. DOI: doi.lorg/10.11646/phytotaxa.689.2.10 [2025-02-24]

  facebook.com/DipuBORAH2/posts/9235663313192792

[Botany • 2025] Piper saurodermus (Piperaceae) • A New Peltate-leaved Species restricted to the Tropical Rainforest of southern Mexico

 

Piper saurodermus  Ortiz-Rodr. & J.R.Carral, 

in Ortiz-Rodriguez, Carral-Domínguez, Amancio, Hurtado-Reveles et Martínez-Velarde, 2025. 

DOI: doi.org/10.1007/s12225-024-10236-x 

 x.com/AndrsErnestoOr1   

facebook.com/KewBulletin 

Summary

Piper saurodermus (Piperaceae), a new peltate-leaved species endemic to Mexico, is described and illustrated. In the context of the genus, the new species presents a unique combination of morphological features. These include its creeping habit, strongly bullate and densely pubescent leaves with an arcuate venation pattern, short stipitate inflorescences, glabrous flower bracts and the ornamented surface of its fruits. Based on the criteria established by IUCN, it is provisionally determined that the species is Critically Endangered [CR B2ab(ii,iii,v)].

Key Words: Conservation, floristic refuge, karst, neotropics 

Piper saurodermus.
A habit, a creeping understory plant; B peltate leaf with strongly bullate surface and arcuate venation pattern; C short stipitate inflorescence; D close-up of the inflorescence, note the glabrous bracts; E infructescence and ornamented fruit (inset).

 photos: A – B Leopoldo Hurtado Reveles; C – E Rodrigo Carral Domínguez.

Piper saurodermus Ortiz-Rodr. & J.R.Carral sp. nov. 

Andrés Ernesto Ortiz-Rodriguez, José Rodrigo Carral-Domínguez, Guadalupe Amancio, Leopoldo Hurtado-Reveles and María Fernanda Martínez-Velarde. 2025. Piper saurodermus (Piperaceae), A New Peltate-leaved Species restricted to the Tropical Rainforest of southern Mexico.  Kew Bulletin. DOI: doi.org/10.1007/s12225-024-10236-x

  x.com/AndrsErnestoOr1/status/1883158225790607647

  x.com/KewBulletin/status/1883808131979112691

  facebook.com/SistematicayEvoluciondePlantasTropicales/posts/1115278847057688

[Botany • 2024] Peperomia dryadica (Piperaceae) • A New karstic Species from the Brazilian Atlantic Forest

 

Peperomia dryadica Marcusso,

in Marcusso, Melo et Forzza, 2024. 

DOI: 10.1007/s12225-024-10217-0 

 x.com/KewBulletin

Summary

Peperomia is known for its remarkable diversity, the Atlantic Forest in Brazil being particularly noteworthy for its high levels of richness and endemism. Floristic research in the Atlantic Forest karst ecosystems has revealed new discoveries in the genus, based on fieldwork and thorough study of herbaria collections. Peperomia dryadica Marcusso is here described and characterised as entirely glabrous except for the distal third of the leaf margins which is ciliolate, light green stems when fresh, alate distal internodes, leaves decussate, opposite or alternate basally and opposite or 3-whorled distally, lamina oblanceolate, obovate or rarely elliptic and nerves sunken adaxially and raised abaxially. Peperomia dryadica is found solely in the Vale do Ribeira region of São Paulo state, in Southeast Brazil, which holds the largest limestone outcrops in the Atlantic Forest.

Key Words: Limestone, Parque Estadual Intervales (PEI), Parque Estadual Turístico do Alto Ribeira (PETAR), Piperales, Saxicolous

Peperomia dryadica Marcusso, sp. nov.

Etymology. The specific epithet refers to the Dryades, the nymphs in Greek mythology, inhabitants and protectors of the forests. It was also the name that Von Martius (1906) used to refer to the Atlantic Forest, in the first phytogeographical scheme of Brazilian territory.

  

Gabriel Mendes Marcusso, Pablo Hendrigo Alves De Melo and Rafaela Campostrini Forzza. 2024. Peperomia dryadica (Piperaceae), A New karstic Species from the Brazilian Atlantic Forest. Kew Bulletin. DOI: doi.org/10.1007/s12225-024-10217-0

  x.com/KewBulletin/status/1826895679823749263

[Botany • 2024] Piper motuoense (Piperaceae) • A New Species from Xizang, China

 

Piper motuoense X.W.Qin, F.Su & C.Y.Hao,

in Su, Qin, Fan, Yan, Ji et Hao. 2024. 

墨脱胡椒  ||  DOI: 10.3897/phytokeys.238.115494

Abstract

Piper motuoense X.W.Qin, F.Su & C.Y.Hao, a new species of Piperaceae from Xizang, China, is described and illustrated in this paper. The new species resembles P. yinkiangense and P. anisotis, but it can be readily distinguished from the compared species by several characteristics. Gonophyll leaves are chartaceous and the leaf secondary vein count is 7–9, with the outermost pair being very weak when there are nine veins. Additionally, the apical pair arises 2–4 cm above the base and the leaf base is asymmetrical, with bilateral petioles that cling and heal together. Pistillate floral bracts are sessile, with 3, 4 or 5 stigmas. The description of the new species includes photographs, detailed descriptions, notes on etymology, distribution and habitat, as well as comparisons with morphologically similar species.

Key words: Asia, Paleotropical flora, Piperales, Sino-Himalaya, taxonomy

Line drawing of Piper motuoense X.W.Qin, F.Su & C.Y.Hao, sp. nov.
A branch with infructescence B branch with staminate spike C magnified view of pistillate spike D magnified view of staminate spike E magnified view of infructescence F detail of the indument along the secondary nerves of the abaxial leaf surface G adaxial surface of gonophyll leaf H adaxial surface of gonophyll leaf base I abaxial surface of gonophyll leaf J abaxial surface of gonophyll leaf base K cross-section of infructescence L stamen M carpel N seed.

Illustration by Fan Su, based on the holotype.

Piper motuoense X.W.Qin, F.Su & C.Y.Hao, sp. nov.
A habit B branch with infructescence C branch with staminate spike D branch with trophophyll leaf E adaxial and abaxial surface of gonophyll leaf F adaxial and abaxial surface of gonophyll leaf base G detail of the indument along the mid-vein of the gonophyll leaf adaxial and abaxial surface H pistillate spike I staminate spike J infructescence K close-up of portion of the staminate spike L close-up of portion of the infructescence M cross-section of infructescence N seed (side view).

Photographs by Fan Su.

 Piper motuoense X.W.Qin, F.Su & C.Y.Hao, sp. nov.

 

Diagnosis: The new species is morphologically similar to P. yinkiangense, but can be easily distinguished from the latter in several aspects. The leaf-blades 12.5–18 × 3.5–6.5 cm, elliptic or ovate to lanceolate (vs. 11–14 × 6.5–8.5 cm, oblique-ovate), chartaceous (vs. membranous), abaxially sparsely villous along the mid-vein (vs. abaxially sparsely hispidulous), gonophyll leaves 7–9 secondary vein pairs, the outer pair arising 2–4 cm above base (vs. 8–9, outer pair arising 1–2 cm above base), base bilaterally clinging to the petiole and overlap together (vs. basal sinus 1–2 mm wide on side of longer and wider lobe, 4–5 mm wide on other side, bilaterally free for 2–3 mm), floral bracts sessile (vs. petiolate) and stigmas 3, 4 or 5 (vs. 4). P. motuoense also resembles P. anisotis in the shape of leaves and fruit, but differs from the latter in the leaves vein 7–9 (vs. 5–7), leave base bilateral clinging to petiole and overlap together (vs. bilateral free for 1–2 mm) (Table 1).

Etymology: The specific epithet refers to its distribution, Motuo County, Xizang, in China.

Vernacular name: Chinese: 墨脱胡椒 (mò tuō hú jiāo). ‘Mò Tuō’ is a place name, which is the literal translation of the specific epithet motuoense and ‘hú jiāo’ is the Chinese name of Piper.

 Fan Su, Xiao-Wei Qin, Rui Fan, Lin Yan, Xun-Zhi Ji and Chao-Yun Hao. 2024. Piper motuoense, A New Species of Piperaceae from Xizang, China. PhytoKeys. 238: 85-94. DOI: 10.3897/phytokeys.238.115494

[Botany • 2023] Piper kerrii, P. phangngaense & P. rugocarpum (Piperaceae) • Three New Species, Two New Records and additional Taxonomic Notes of Piper from Thailand

Piper rugocarpum Y.Banchong and Suwanph.,

Piper kerrii Suwanph. and Y.Banchong, 

Piper phangngaense Suwanph. and Hodk., 

in Suwanphakdee, Karapan, Banchong et Hodkinson, 2023.

DOI: 10.1111/njb.04099 

Researchgate.net/publication/375281009

  facebook.com/CSuwanph

Abstract

We revised the genus Piper (Piperaceae) for the forthcoming volume of the Flora of Thailand. Three new species, namely P. kerrii, P. phangngaense and P. rugocarpum are described and illustrated. In addition, two records of species new to Thailand, P. laosanum and P. obtusissimum, are presented. New complete taxonomic descriptions of P. crassipes and P. obtusissimum are provided. We also designate lectotypes and epitypes of P. laosanum and P. obtusissimum, respectively. An emended key to species including the new species, new records for Thai Piper species and additional taxonomic notes are provided.

Keywords: asian Piper, Flora of Thailand, new species, Piperaceae, tropical plants

Piper kerrii Suwanph. and Y.Banchong, sp. nov.

Etymology This species is named in honour of A. F. G. Kerr (1877– 1942), who is recognized as the ‘founding father’ of Thai botany. He was the first botanist to collect Piper specimens from Ranong province.

Piper phangngaense Suwanph. and Hodk. sp. nov.

Etymology The specific epithet of this species refers to its type locality (Sri Phang-Nga National Park, Phangnga province, Thailand).

Piper rugocarpum Y.Banchong and Suwanph., sp. nov.

Etymology The specific epithet refers to the distinguishing character of the fruit surface which is rugate when dry.

New records for Thailand 

Piper laosanum C.DC. (De Candolle 1910)

Phitsanulok province, Phu Hin Rong Kla National Park

Piper obtusissimum Miq. (Miquel 1843–1844).

Narathiwat province, Hala-Bala Wildlife Sanctuary

 

Chalermpol Suwanphakdee, Sunate Karapan, Yuthana Banchong and Trevor R. Hodkinson. 2023. Three New Species, Two New Records and additional Taxonomic Notes of Piper (Piperaceae) from Thailand. Nordic Journal of Botany. e04099. DOI: 10.1111/njb.04099

 Researchgate.net/publication/375281009_Three_new_species_of_Piper_from_Thailand

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[Botany • 2023] Piper alwynii (Piperaceae) • A New Species from the Cordillera del Cóndor at the Border of Peru and Ecuador

Piper alwynii M. A. Jaram.,

 

in Jaramillo, 2023. 

DOI: 10.3417/2023862 

 facebook.com: Alejandra Jaramillo 

Abstract

Piper alwynii M. A. Jaram. (Piperaceae), a new species occurring in sandstone outcrops of the Cordillera del Cóndor at the border of Ecuador and Peru, is here described and illustrated. Morphologically it shows similarities to species in the Radula clade. Piper alwynii is similar to P. purdiei C. DC. but differs in having leaves pinnately nerved within the lower two thirds of the midvein, nerves pubescent on the abaxial surface, villous peduncles, and spikes 2–2.7 cm long. An identification key for 32 northern South American Piper L. species with small (≤ 10 cm) leaves is presented.

Keywords: Piperales, Radula clade, sandstone outcrop vegetation, tropical montane forests

M. Alejandra Jaramillo. 2023. Piper alwynii (Piperaceae), A New Species from the Cordillera del Cóndor at the Border of Peru and Ecuador.  Novon, A Journal for Botanical Nomenclature. DOI: 10.3417/2023862

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[Botany • 2023] Piper quinchasense (Piperaceae) • A New Species with peltate leaves from Serranía de las Quinchas, Colombia

Piper quinchasense M. A. Jaram., 

in Jaramillo, Rodríguez-Duque et Escobar-Alba, 2023. 

 DOI: 10.3897/phytokeys.227.101405

Abstract

Piper quinchasense is described and illustrated as a new species occurring in the understory of wet montane forest of the middle Magdalena Valley in Colombia, the easternmost portion of the Chocó Region. Its relationships are discussed with related taxa from the Macrostachys clade. An identification key for 35 Neotropical Piper species with peltate leaves is provided.

Key words: Boyacá, Chocó Region, Macrostachys clade, Piperales, tropical montane forests

Piper quinchasense M. A. Jaram.
 A habit B magnified view of inflorescence C stilt roots D sheathing petiole E adaxial surface of leaves F abaxial surface of leaves and inflorescence.

Photographs by D. Rodríguez-Duque.

Piper quinchasense M. A. Jaram.
A sympodial branch, showing both the abaxial and adaxial surface of the leaves B magnified view of inflorescence C floral diagram D anther E floral bract, abaxial view F floral bract view from above G fruit H seed I magnified view of leaf abaxial surface J sheathing petiole K magnified view of leaf adaxial surface.

Illustration by Ariadna Valenzuela, based on M. Escobar-Alba 764, and photographs by D. Rodríguez-Duque.

 Piper quinchasense M.A.Jaram., sp. nov.

 

Description: Piper quinchasense is similar to P. parianum, it differs from the latter in having all leaf blades peltate (vs. leaves deeply lobed to peltate), and inflorescence peduncle 4–5 cm long, (vs. peduncle 1–2.7 cm long).

Etymology: The epithet quinchasense, refers to Serranía de las Quinchas, the type locality for this species. According to locals, Quinchas derives from the indigenous groups “Quinchos” that inhabited the region.

 M. Alejandra Jaramillo, Dayro Rodríguez-Duque and Magda Escobar-Alba. 2023. A New Species of Piper (Piperaceae) with peltate leaves from Serranía de las Quinchas, Colombia. PhytoKeys. 227: 9-24. DOI: 10.3897/phytokeys.227.101405

Resumen: Piper quinchasense se describe e ilustra como una nueva especie que ocurre en el sotobosque de bosques húmedos montanos del valle medio del Magdalena en Colombia, la porción más oriental del Chocó Biogeográfico. Se discuten sus relaciones con otras especies del clado Macrostachys. Se presenta una clave de identificación para 35 especies de Piper Neotropical con hojas peltadas.

Palabras claves: bosque montano tropical, Boyacá, Chocó Biogeográfico, clado Macrostachys, Piperales

[Botany • 2023] Piper svenningii (Piperaceae) • A New Species from Ecuador, Colombia, and Perú

Piper svenningii 

in Trujillo et Balslev, 2023. 

  DOI: 10.1111/njb.03897

 instagram.com/JCSvenning

Abstract

Recent revision of the Piper collections at Aarhus Univ. Herbarium (AAU), collected in Ecuador, revealed specimens of undescribed species and species that were mentioned as endemic in the catalog of plants of Colombia Piper dolichostylum, P. littlei, P. morelianum, P. sanandresense and P. tarquiense resulting of incomplete curation of herbarium collections in institutions that launched expeditions to the Amazon and the Andes. Piper svenningii (Piperaceae) from the eastern slopes of the Andes and adjacent lowlands in Colombia, Ecuador and Peru, is described as a new species and illustrated, and a morphological comparison with similar species is made. Piper svenningii differs from P. costatum and P. japurense by its leaves which have induplicate margins, versus leaf margins flat and not induplicate. It differs from Piper rurrenbaqueanum by having leaves that are pinnately nerved throughout with 10–12 pairs of secondary nerves, versus 4–6 pairs of secondary nerves that are pinnately arranged in the basal two thirds of the lamina.

Keywords: Piperaceae, east Andean slope, Napo province, South America

 

William Trujillo and Henrik Balslev. 2023. Piper svenningii – A New Species from Ecuador, Colombia, and Perú. Nordic Journal of Botany. e03897. DOI: 10.1111/njb.03897 

instagram.com/p/Cr0o5tWMVaK 

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[Botany • 2022] New Species and A Revision of the Genus Peperomia (Piperaceae) in Thailand

เบี้ยพ่อตา  ||  Peperomia ranongensis Suwanph., Hodk. & Chantar., 

in Suwanphakdee, Hodkinson & Chantaranothai, 2022. 

 DOI: 10.20531/tfb.2022.50.2.11

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Abstract

We update the descriptions of seventeen native species of Peperomia in Thailand, including a new species, P. ranongensis, and a detailed morphological description for the uncommon species P. kotana based on Thai specimens. We provide a generic description, a key to all the species and provide lectotypifications for P. bavina, P. heyneana, P. laticaulis, P. nakaharae and P. reflexa var. parvifolia. Five species, P. heptaphylla, P. masuthoniana, P. multisurcula, P. ranongensis and P. sirindhorniana, are endemic to Thailand. Peperomia pellucida is a common pantropical species. Eight species, namely P. cavaleriei, P. dindygulensis, P. heyneana, P. laevifolia, P. masuthoniana, P. moulmeiniana, P. multisurcula and P. sirindhorniana have a high potential for development as ornamental plants.

Keywords: Flora of Thailand, lectotypification, Piperales, taxonomy, tropical plants

A. Peperomia dindygulensis Miq.; B. P. kotana C.DC.;
C. P. masuthoniana Suwanph. & Chantar.; D. P. moulmeiniana C.DC.;
E. inflorescences of P. moulmeiniana C.DC.; F. P. pellucida (L.) Kunth;
 G. P. portulacoides (Lam.) Dietr.; H. P. tetraphylla (G.Forst) Arn.

(photos by C. Suwanpahkdee).

Peperomia ranongensis Suwanph., Hodk. & Chantar.:
 A. plant with inflorescences; B. a portion of infructescence; C. 3-verticillate; D. opposite-decussate; E. fruit image from light microscope; F. fruit image from scanning electron microscope; G. papillae imaged from scanning electron microscope (photos by C. Suwanpahkdee).

Chalermpol Suwanphakdee, Trevor R. Hodkinson and Pranom Chantaranothai. 2022. New Species and A Revision of the Genus Peperomia (Piperaceae) in Thailand. Thai Forest Bulletin (Botany). 50(2); 104–119.  DOI: 10.20531/tfb.2022.50.2.11

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[Botany • 2021] Peperomia callejasii (Piperaceae) • A New Species from the Eastern Slopes of the Andes, northern South America

  Piper callejasii W. Trujillo & M. A. Jaram., 

in W. Trujillo, E.T. Trujillo & Jaramillo, 2021. 

DOI: 10.3417/2021659 

Researchgate.net/publication/355081071 

Abstract

A new species of Piper L. (Piperaceae) from the eastern slopes of the Andes in Colombia and Peru, P. callejasii W. Trujillo & M. A. Jaram., is described and illustrated, and morphological comparisons with similar species are discussed. Piper callejasii is distinguished by its stigmas being sessile, rather than on a long style as in four similar species. Its conservation status is suggested to be Endangered.

Keywords: Colombia, Peru, Piperaceae

  Piper callejasii W. Trujillo & M. A. Jaram.
A. Sympodial branch; lower and upper leaf surfaces and spikes. -B. Detail of the petiole, node, and internode. -C. Fruit in side view. -D. Magnified view of the infructescence. -E. Floral bract view from above. -F. Detail of the leaf base and prophyll. -G. Detail of the indument along the midvein and secondary nerves of the lower leaf surface. -H. Papillae on the proximal portion of the midvein and secondary nerves of the lower leaf surface. Illustration by Isabella Garzón based on Trujillo et al. 1061.

  Piper callejasii W. Trujillo & M. A. Jaram.
A. Inflorescence; monopodial and sympodial leaves. B. Sympodialbranch; upper leaf surfaces and infructescence.

Photos from Trujillo et al. 1061 by W. Trujillo.

 Piper callejasii W. Trujillo & M. A. Jaram. sp. nov.

Etymology. This species is named in honor of Ricardo Callejas. Ricardo has worked on Piper taxonomy for more than three decades. Not only is he immensely knowledgeable about species in the Neotropics (mostly) and Asia (some), but he has been incredibly instrumental in empowering young botanists, like us, to study Piper in an integrative manner. Christiane Ehringhaus called him the “Pope of Piper” (Ehringhaus, 1997); we prefer the “Father of Piper” because of his knowledge and warm welcome to anyone dedicating time to study these captivating plants. 

William Trujillo, Edwin Trujillo Trujillo and M. Alejandra Jaramillo. 2021. Piper callejasii (Piperaceae), A New Species from the Eastern Slopes of the Andes, Northern South America. Novon. 29: 200–205. DOI: 10.3417/2021659 

Researchgate.net/publication/355081071_Piper_callejasii_a_New_Species_from_the_Andes_Northern_South_America