[Botany • 2026] Syngonium turipachense (Araceae) • A New Species of Syngonium sect. Syngonium from Chiapas, Mexico

Syngonium turipachense 

in Jiménez, Pérez-Farrera, Croat, Martínez-Martínez, Méndez, Hentrich et Aguilar-Rodríguez, 2026.

 DOI: doi.org/10.11646/phytotaxa.750.3.6 

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The genus Syngonium is represented in Mexico by ten species, seven of which are registered for the state of Chiapas. During fieldwork between 2020 and 2025 in Berriozabal, Chiapas, we discovered an undescribed species of Syngonium sect. Syngonium that is morphologically similar to S. neglectum, but differing from that species in having one or two inflorescences per axil, glaucous stems and spathe tube, a spathe blade almost twice as long as the staminate portion of the spadix, staminate flowers retuse at the apex, glaucous immature infructescence and the spathe not persistent in mature fruits.

Aroid, Berriozabal, Reserva La Pera, Syngonium angustatum, Syngonium neglectum, Monocots

Syngonium turipachense

PEDRO DÍAZ JIMÉNEZ, MIGUEL ÁNGEL PÉREZ-FARRERA, THOMAS B. CROAT, MAURICIO GERÓNIMO MARTÍNEZ-MARTÍNEZ, GASPAR MORENO MÉNDEZ, HEIKO HENTRICH, PEDRO A. AGUILAR-RODRÍGUEZ. 2026. A New Species of Syngonium sect. Syngonium (Araceae) from Chiapas, Mexico.  Phytotaxa. 750(3); 207-215. DOI: doi.org/10.11646/phytotaxa.750.3.6 [2026-04-07]

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[Botany • 2026] Tweeddalea capsiciformis (Araceae: Schismatoglottideae) • Unveiling the Fifteenth Species of Tweeddalea from Indonesian Borneo

 

Tweeddalea capsiciformis A.S.D.Irsyam & M.R.Hariri,

in Irsyam, Hariri et Setiawan, 2026. 

DOI: doi.org/10.1007/s12228-026-09883-0  

  linkedin.com

Abstract

A new species of the genus Tweeddalea (Araceae), Tweeddalea capsiciformis, is described and illustrated from West Kalimantan, Indonesian Borneo. This species increases the number of described species in the genus to fifteen. The discovery of T. capsiciformis not only extends the known distribution range of the genus but also highlights the rich yet still insufficiently explored diversity of Araceae in Borneo.

Keywords: Aroid, Kalimantan, Malesia, Multiflora clade, Schismatoglottideae

Tweeddalea capsiciformis.
A. Habit. B. Inflorescence position. C. Spathe. D. Spadix. E. Close-up spadix. F. Close-up staminate flowers zone. G. Close-up pistils and interstice zone.

 (A–F from the holotype.).

Tweeddalea capsiciformis A.S.D.Irsyam & M.R.Hariri., sp. nov.

  

 Etymology. The specific epithet capsiciformis refers to the chili-like shape of the spathe, which resembles the fruit of Capsicum L. (Solanaceae).

Arifin S. D. Irsyam, Muhammad R. Hariri & Ade Agus Setiawan. 2026. Unveiling the Fifteenth Species of Tweeddalea (Araceae) from Indonesian Borneo. Brittonia. DOI: doi.org/10.1007/s12228-026-09883-0 [30 April 2026] 

 linkedin.com/posts/arifin-surya-dwipa-irsyam-5b46a916a_a-new-discovery-from-the-forests-of-kalimantan-activity-7455934737178812416-w7WN

[Botany • 2026] Amorphophallus khanhhoaensis (Araceae: Aroidea: Thomsonieae) • A New Species from the coastal area of Central Vietnam

 

Amorphophallus khanhhoaensis  

in Tien, Nguyen, Dinh, Le et Hetterscheid, 2026. 

DOI: doi.org/10.11646/phytotaxa.750.1.5 

facebook.com/DiepDinhQuang

Abstract

Amorphophallus khanhhoaensis is described as a new species from central Vietnam. This species is morphologically similar to and therefore compared with A. cicatricifer (eastern Thailand and Myanmar), A. umbrinus (Vietnam), and A. ferruginosus (Laos). An updated key to the Vietnamese species of Amorphophallus is provided.

 Araceae, Carnose spathe, Central Vietnam, Dien Khanh, Khanh Hoa, nomenclature, phylogeny, pollen, taxonomy, Monocots

 

Amorphophallus khanhhoaensis 

TRAN VAN TIEN, VAN DU NGUYEN, QUANG DIEP DINH, CHI TOAN LE and WILBERT HETTERSCHEID. 2026. A New Species of the Genus Amorphophallus (Thomsonieae, Aroidea, Araceae) from the coastal area of Central Vietnam. Phytotaxa. 750(1); 51-57. DOI: doi.org/10.11646/phytotaxa.750.1.5 [2026-03-31]

 facebook.com/DiepDinhQuang/posts/27107559208844765

[Botany • 2026] Homalomena lingua-felis (Araceae: Philodendreae) • A New densely-haired aroid Species of Homalomena from North Sumatra, Indonesia

 

Homalomena lingua-felis A.S.D.Irsyam, Raynalta & M.R.Hariri, 

in Muzzazinah, Damayanti, Fadhil, Raynalta, Husaini, Rivai, Setiawan, Irsyam, Rosleine, Pratami, Hariri et Ariati, 2026. 

DOI: doi.org/10.3897/phytokeys.271.172410

Abstract

Homalomena lingua-felis is newly described from Tapanuli (North Sumatra Province, Indonesia). This species resembles H. pexa from which can be easily distinguished by its shorter petiole (2.0–4.5 cm vs. 7.0–12 cm), papillate petiole (vs. densely white-tomentose), elliptic or cordate to ovate leaf shape (vs. oblong- to ovate-cordiform), papillate abaxial leaf surface (vs. sparsely hairy), papillate veins (vs. tomentose), papillate peduncle and spathe (vs. tomentose), pendulous peduncle (vs. semi-erect to declinate), and conical staminate flower zone (vs. ellipsoid). This novelty represents a continuation of discoveries on hairy Homalomena in Sumatra.

Key words: Araceae, Chamaecladon, Indonesia, Malesia, Philodendreae

Homalomena lingua-felis A.S.D.Irsyam, Raynalta & M.R.Hariri, sp. nov.
A. Habit; B. Adaxial surface of leaf showing dense hairs; C. Bulbous hair in adaxial leaf surface (59.4×); D. Papillose abaxial leaf surface (59.4×); E. Pendulous synflorescence; F. Bloom at late staminate anthesis with half and full spathe artificially removed; G. Bloom at late pistillate anthesis with half spathe artificially removed (20.7×).

Photos by Erick Raynalta (A, B, E) and Muhammad Rifqi Hariri (C, D, F, G).

Homalomena lingua-felis A.S.D.Irsyam, Raynalta & M.R.Hariri, sp. nov.

 

Diagnosis. Homalomena lingua-felis is similar to H. pexa but differs by having shorter petiole (2.0–4.5 cm vs. 7.0–12 cm), papillate petiole (vs. densely white-tomentose), elliptic or cordate to ovate leaf shape (vs. oblong- to ovate-cordiform), papillate abaxial leaf surface (vs. sparsely hairy), papillate veins (vs. tomentose), papillate peduncle and spathe (vs. tomentose), pendulous peduncle (vs. semi-erect to declinate), and conical staminate flower zone (vs. ellipsoid).

Etymology. The specific epithet lingua-felis is derived from the Latin lingua (tongue) and feles (cat), in reference to the characteristic texture of the leaf surface, which bears a resemblance to the rough surface of a feline tongue.

 Muzzazinah, Inggar Damayanti, Muhammad Hisyam Fadhil, Erick Raynalta, Iin Pertiwi Amin Husaini, Reza Ramdan Rivai, Ade Agus Setiawan, Arifin Surya Dwipa Irsyam, Dian Rosleine, Mentari Putri Pratami, Muhammad Rifqi Hariri and Siti Roosita Ariati. 2026. A New densely-haired aroid Species of Homalomena (Araceae) from North Sumatra, Indonesia. PhytoKeys. 271: 161-172. DOI: doi.org/10.3897/phytokeys.271.172410 [02 Mar 2026]

[Botany • 2026] Bau djinna (Araceae) • A New Species from the Rejang Basin, Sarawak, Malaysian Borneo [Schismatoglottideae of Borneo LXXX]

Bau djinna S.Y.Wong, P.C.Boyce & A.Hay, 

in Wong, Boyce et Hay, 2026. 

 DOI: doi.org/10.1002/fedr.70063

ABSTRACT

Bau djinna is described as a new species from Central Sarawak and compared with three species to which it is most similar. Recognition of B. djinna takes the genus to 27 species, 25 of which are endemic to Borneo. A brief note is provided on Schismatoglottis ambigua, a recently published name synonymous with Bau inculta. The paper also introduces the term ‘anthomorph’ for the flowering structure that in general is termed an inflorescence in the Araceae and explains why the term ‘bloom’ that the authors have employed previously is unsatisfactory.

Bau djinna.
 (A) Plant in habitat, the distinctive quilted leaf blades are clearly seen. (B) Stem ascending and rooting adventitiously. (C) Detail of petiole showing the longitudinal ridges and denticulate edges. All images the authors.

Bau djinna.
(A) Cluster of sequentually-maturing anthomorphs, the largest (oldest) at pistillate antheses. The cluster-preceding much-reduced foliage leaf and the prophyll associated with the second oldest anthomorphs are visible. (B) Anthomorph at end of staminate antheses with the spathe limb deliquessing. (C & D) Anthomorph at pistillate anthesis showing the full extent to which the spathe limb opens. All images the authors.

Bau djinna S.Y.Wong, P.C.Boyce & A.Hay, sp. nov  

 

  Diagnosis: Bau djinna belongs to a group of species in which during anthesis the spathe limb barely opens. Within this group B. djinna is vegetatively most similar to B. amosyui (S.Y.Wong, S.L.Low & P.C.Boyce) S.Y.Wong & P.C.Boyce (Figure 1B) and B. hendrikii (S.Y.Wong & P.C.Boyce) S.Y.Wong & P.C.Boyce (Figure 1C), differing from both by the plain deep green leaf blades and an ascending-rooting stem (vs leaf blades habitually silver variegated and stems clumping and abbreviated). Bau djinna is further distinguished from B. amosyui by lacking a partially naked interstice separating the pistillate and staminate florets, by the subcylindric (vs conical) pistillate zone long-obliquely inserted (vs barely obliquely inserted) and the blunt-tipped cream (vs pointed yellow) spadix appendix. From B. hendrikii B. djinna is distinguished by the conical stout pale green pistillate zone (vs rather slender cylindrical emerald-green), dense (vs rather lax) pistillate florets, button-like (vs broadly disk-like) stigma, and the blunt-tipped cream (vs pointed yellow) spadix appendix.

  Etymology: Djinn, in the context of ‘hidden beings’, originates from Arabic, an extension of the word meaning to hide, conceal, or cover, emphasizing the elusive and unseen nature of djinn, who are believed to inhabit a realm parallel to humans reflecting the belief that these beings are invisible to humans. Here the word is used in the feminine nominative, djinna, in the sense that the spadix is concealed by the hardly opening spathe.

Wong Sin Yeng, Peter C. Boyce and Alistair Hay. 2026. Schismatoglottideae (Araceae) of Borneo LXXX: Bau djinna, a New Species from the Rejang Basin, Sarawak. Feddes Repertorium. 137(1); e70063. DOI: doi.org/10.1002/fedr.70063 [10 March 2026]

[Botany • 2026] Homalomena bungamerah (Araceae: Philodendreae) • A New Species from Northern Sumatra, Indonesia

 Homalomena bungamerah Mustaqim, A.S.D.Irsyam & M.R.Hariri,

in Mustaqim, Irsyam, Pratama, Surbakti et Hariri. 2026. 

taiwania.ntu.edu.tw/abstract/2160 

Abstract

A new litophytic species of Homalomena from Sumatra, Homalomena bungamerah, is described. The new species is unique in having a plicate verrucose upper leaf surface combined with the absence of interpistillar staminodes. Owing to the ongoing threats and small population, H. bungamerah is provisionally assessed as Critically Endangered (CR B2 ab(iii,v)). Morphological descriptions, photographs, and notes are given.

Keyword: aroids, Homalomena asperifolia, Homalomena mobula, Homalomena scutata, herbs, litophyte, west Malesia

Morphology of Homalomena bungamerah Mustaqim, A.S.D.Irsyam & M.R.Hariri, sp. nov.
 A. Living plant. B. Leaf, adaxial. C. Leaf, abaxial. D. Leaf, adaxial texture. E. Leaf, close up of abaxial. F. Close-up of petiole ribs. G. Synflorescence showing spathe which is nodding at anthesis. H. Synflorescence. I. Inflorescence, front view. J. Inflorescence, lateral view. K. Spadix with spathe removed. L. Female spadix zone. M. Male spadix zone.

Photographs by Wendy A. Mustaqim.

Homalomena bungamerah Mustaqim, A.S.D.Irsyam & M.R.Hariri, sp. nov. 

 Diagnosis: This species is unique in having large and plicate leaves, a spathe that nodding at anthesis, and pistillate flowers without an interpistillar staminode. The most morphologically similar species is H. mobula P.C.Boyce 1/2), the larger leaf lamina (16.5–25.8 × 7.7–14.6 cm vs. 7.5–12 × 2.5–6 cm), and the absence of interpistillar staminodes. 

 

Etymology: The specific epithet “bunga merah” is derived from the Malay language, reflecting the inflorescence (“bunga”) with red (“merah”) peduncle and spathe. Malay is the indigenous language in Langkat Regency, where the type material was collected.  

Wendy A. Mustaqim, Arifin S.D. Irsyam, Muhammad A. Pratama, Irwansyah Surbakti and Muhammad R. Hariri. 2026. Homalomena bungamerah (Araceae), A New Species from Northern Sumatra, Indonesia. Taiwania. 71(2); 209-212 DOI: 10.6165/tai.2026.71.209 [16 March 2026]

https://taiwania.ntu.edu.tw/abstract/2160

[Botany • 2026] Colocasia sookchaloemiae (Araceae) • A New Species from northeastern Thailand

Colocasia sookchaloemiae Chatan & Promprom, 

in Promprom, Munglue, Pasorn, Lanorsavanh et Chatan, 2026.  

 DOI: doi.org/10.3897/phytokeys.269.175203  

Abstract

Colocasia sookchaloemiae (Araceae) is described from Phu Pha Yol National Park (northeastern Thailand). It is morphologically similar to C. fallax, from which it differs in having seasonal dormancy (vs. evergreen), broader and non-glaucous laminae (vs. narrower and slightly glaucous beneath), a speckled green ovary (vs. mostly green), a convex stigma with a depressed center (vs. 3-lobed), a sparsely hairy sterile interstice (vs. glabrous), and a thicker stipitate appendix (vs. slender, often sessile, or shortly stipitate). A comparative study of living plants, cultivated specimens, and herbarium material (including types) supports its recognition as a distinct species. The new taxon grows on rocky cliffs in dry dipterocarp and mixed deciduous forests at 350–400 m a.s.l., and it is currently known from Mukdahan and Sakon Nakhon provinces. A preliminary IUCN assessment indicates that the species is Data Deficient (DD).

Key words: Asia, new species, taxonomy

Colocasia sookchaloemiae.
A. Opened inflorescence with parts removed; B. Lower part of the spadix showing pistillodes at the base, pistillate flower zone, sterile interstice, and part of the staminate zone; C. Upper part of the spadix and appendix; D. Enlarged view of the lower part of the spadix; E, F. Staminate flower zone, stipe, and lower part of the appendix; G, H. Appendix and adaxial side of the spathe (showing dirty yellow to pale orange-yellow coloration near the apex).

Colocasia sookchaloemiae. A–C. Habit and habitat.

 Colocasia sookchaloemiae Chatan & Promprom, sp. nov.

 

Diagnosis. Colocasia sookchaloemiae differs from C. fallax in having seasonal dormancy (vs. evergreen); broader (11–25 cm) and non-glaucous lamina [vs. narrower (3.5–15 cm) and slightly glaucous beneath]; larger (2.3–3.1 mm in diameter), speckled green ovary and a convex stigma with a depressed center [vs. smaller ovary (ca. 1.1 mm in diameter), stigma 3-lobed]; pistillate zone with basal rows of pistillodes (vs. rows of nail-/peg-like staminodes); sterile interstice and staminate zone sparsely hairy (vs. glabrous); sterile interstice shape cylindrical and slightly constricted (vs. tapering); appendix thicker, ivory, and clearly stipitate (vs. slender, often sessile/shortly stipitate, creamy-yellow to purple). Details of the morphological comparison between the new species and C. fallax are shown in Table 1.

...

 

 Wilawan Promprom, Phukphon Munglue, Pattana Pasorn, Soulivanh Lanorsavanh and Wannachai Chatan. 2026. Colocasia sookchaloemiae (Araceae), A New Species from northeastern Thailand. PhytoKeys. 269: 131-140. DOI: doi.org/10.3897/phytokeys.269.175203 [13 Jan 2026]

[Botany • 2025] Sarawakia khoonmengiana (Araceae) • A New rheophytic Species from southwest Sarawak, Malaysian Borneo [Schismatoglottideae of Borneo LXXIX]

Sarawakia khoonmengiana S.Y.Wong & P.C.Boyce,
 

in Wong & Boyce, 2025. 

 Sandakania. 27;

Photos: Boyce P.C.

Sarawakia khoonmengiana is described and illustrated as a new species from Lanjak Entimau Wildlife Sanctuary, southwest Sarawak, where it is restricted to exposed shale riverbanks.

Sarawakia khoonmengiana S.Y.Wong & P.C.Boyce.
A. Plants in habitat on vertical silt-covered shales. B. Detail of leaf blade venation, abaxial surface. C. Bloom at pistillate anthesis shown in natural position. D, E. Bloom at staminate anthesis with spathe limb characteristically degrading. Note damage to the appendix in D, and the perpetrators, chrysomelid beetles. F. Bloom at late pistillate antheses with nearside spathe artificially removed, note the expanded interstice staminodes.

Photos: Boyce P.C.

Comparison of spadix morphology of five Sarawakia species.
A. Sarawakia clausula. B. Sarawakia khoonmengiana. C. Sarawakia larynx. D. Sarawakia petradoxa. E. Sarawakia rejangica. Spadix of each with spathe partially or completely removed. Photos: Boyce P.C.

Wong Sin Yeng & Peter C. Boyce. 2025. Schismatoglottideae of Borneo LXXIX: Sarawakia khoonmengiana, A New rheophytic Species from southwest Sarawak, with a conspectus of plant names dedicated to Wong Khoon Meng. Sandakania. 27; 277-284.

[Botany • 2025] Homalomena polyneura (Araceae) • A New spectacular Species from Indonesian New Guinea

 

Homalomena polyneura A.S.D.Irsyam & M.R.Hariri, 

Irsyam, Husaini, Pratami, Raynalta, Setiawan et Hariri, 2025.

Gard. Bull. Singapore. 77(2); 219 - 223.

  Researchgate.net/publication/398711786

ABSTRACT. 

A new ornamental species of Homalomena Schott, H. polyneura A.S.D.Irsyam & M.R.Hariri, is formally described from Central Papua, Indonesia. 

Keywords. Aroid, Malesia, Philodendreae, rheophytic

 Homalomena polyneura A.S.D.Irsyam & M.R.Hariri.
A, B. Habit. C, D. Leaf showing both adaxial and abaxial surfaces. E. Spathe. F. Spadix. G. Close-up of staminate flowers. H. Close-up of pistillate flowers. I. Close-up of post-anthesis pistillate flowers.

(Photos: A-D, E. Raynalta; E-I, M.R. Hariri)

Homalomena polyneura A.S.D.Irsyam & M.R.Hariri, sp. nov.

 Homalomena polyneura exhibits morphological affinities with H. steenisiana A.Hay, yet it can be readily distinguished by 5–6 primary lateral veins (vs 2–3), inflorescences solitary or 2 together (vs few to c. 16 together), spathe reddish to dark brown (vs green), female zone shorter than male zone (vs female and male zones approximately equal in length), and pistillate flowers lacking staminodes (vs staminodes present).

Etymology. The specific epithet polyneura is derived from the Greek poly- (many) and neuron (nerve, vein), in reference to the conspicuous abundance of raised lateral veins on the adaxial surface of the leaf lamina.

Irsyam, A.S.D., Husaini, I.P.A., Pratami, M.P., Raynalta, E. Setiawan A.A. & Hariri, M.R. 2025. A New spectacular Species of Homalomena (Araceae) from Indonesian New Guinea. Gard. Bull. Singapore. 77(2); 219 - 223. 

 Researchgate.net/publication/398711786_A_new_spectacular_species_of_Homalomena_from_Indonesian_New_Guinea

[Botany • 2025] Carlephyton sajoreciae (Araceae: Arophyteae) • A New Species from Daraina, Northern Madagascar

 

Carlephyton sajoreciae  N.Wei, S.W.Wang, Q.F.Wang,

in Ratsiferanarivo, Andrianjatovo, Rakotonasolo, Letsara, Rakotoarinivo, Wan, S.-W. Wang, Wei et Q.-F. Wang, 2025. 

DOI: doi.org/10.3897/phytokeys.265.165851

Abstract

Carlephyton sajoreciae is a new species of Araceae from northern Madagascar. It is distinguishable from the similar C. darainense mainly by the purple interior spathe, yellow spadix, 1-androus male flowers, loosely arranged stamens, and short, dark purple styles. A key for identification of the members of the Carlephyton has been provided. Interestingly, C. sajoreciae is the first species documented on humus-rich soils under forest, while other species grow on thin substrates among rocky outcrops. This finding highlights the botanical diversity in Madagascar, reinforcing the importance of conservation efforts in the region.

Key words: Arophyteae, Carlephyton, Daraina region, new species, taxonomy

Carlephyton sajoreciae.
A. Habitat; B. Plant in its natural habitat, arrow: inflorescence viewed from front; C. Whole individuals; D. Underside of leaf; E. Inflorescence that is not fully opened viewed from the front; F. Globular tuber with white roots. Scale bars: 1 cm (C–F).

Carlephyton sajoreciae
A, B. Inflorescence (not fully opened); C. Dissected spathe to show the purple interior; D. Close-up of the male and female spadix zone; E. Young fruits; F. Stamens of the male flowers, spadix ending in a short sterile apex; G, H. Crooked spiny exine globose pollen as seen by scanning electron microscope (SEM). Scale bars: 1 cm (A–D); 0.5 cm (E, F).

 Carlephyton sajoreciae N.Wei, S.W.Wang, Q.F.Wang, sp. nov.

 

Diagnosis. Carlephyton sajoreciae is similar to C. darainense from which differs in bearing a single leaf (vs. 2–5 leaves arranged in a basal rosette in C. darainense), distinctive purple inner spathe surface (vs. green), yellow spadix (vs. whitish in the female zone and whitish to purple in the male zone), and 1-androus male flower (vs. synandria of two stamens).

Etymology. The epithet “sajoreciae” is derived from the abbreviation of the authors’ affiliation, the Sino-Africa Joint Research Center (SAJOREC), Chinese Academy of Sciences, which was established in 2013 in Africa and Madagascar. The name is dedicated to the great contribution made by SAJOREC to biodiversity conservation in Africa and Madagascar over the past decade.

 Ranto Tiana Ratsiferanarivo, Haingotiana Johary Andrianjatovo, Franck Rakotonasolo, Rokiman Letsara, Mijoro Rakotoarinivo, Tao Wan, Sheng-Wei Wang, Neng Wei and Qing-Feng Wang. 2025. Carlephyton sajoreciae (Araceae, tribe Arophyteae), A New Species from Daraina, Northern Madagascar. PhytoKeys. 265: 61-69. DOI: doi.org/10.3897/phytokeys.265.165851

[Botany • 2025] Homalomena siaisensis (Araceae) • One name, many faces: the dolphin case of Homalomena siaisensis in ornamental trade

Homalomena siaisensis A.S.D.Irsyam, M.R.Hariri &Raynalta,

in Irsyam, Raynalta et Hariri, 2025.

DOI: doi.org/10.36253/jopt-17743 

Abstract

Homalomena siaisensis is a newly described species of Sumatran aroid. The species was discovered in January 2024 from South Tapanuli, North Sumatra, Indonesia. This small lithophytic species has recently gained attention in the ornamental plant trade, where it is informally known as Homalomena ‘Dolphin Skin’ and frequently marketed via social media platforms. The species is formally described and illustrated in the present work.

Keywords: Araceae, Malesia, Ornamental, Philodendreae, Sumatra

Homalomena siaisensis A.S.D.Irsyam, M.R.Hariri &Raynalta, sp. nov.

Arifin S.D. Irsyam, Erick Raynalta and Muhammad R. Hariri. 2025. One name, many faces: the dolphin case of Homalomena siaisensis in ornamental trade. Webbia. Journal of Plant Taxonomy and Geography. 80(2); 291-294. DOI: doi.org/10.36253/jopt-17743  [2025-07-18]

[Botany • 2025] Homalomena renda (Araceae) • A remarkable New Species from the Rainforests of Jambi, Sumatra

 

Homalomena renda A.S.D.Irsyam & M.R.Hariri, 

in Irsyam, Hariri et Setiawan, 2025.

DOI: doi.org/10.36253/jopt-17435 

Abstract

Homalomena renda, a new species from Jambi, Sumatra, Indonesia, is most similar to H. cristata in having cristate petioles, leaf blade margins, and primary lateral veins. It is distinguished by its ovate leaf blade; cuneate to truncate base; apiculate apex; revolute margins; and spongy texture. Diagnostic features include a crista along the entire midrib, 8–14 deeply impressed lateral veins, a white lobed ovary, and a markedly shorter peduncle (1.5–4.5 mm). A morphological description, illustration, and comparative notes with H. cristata are provided.

Keywords: Araceae, Chamaecladon, Malesia, Ornamental, Sumatra

Homalomena renda.
 A. Habit; B. Adaxial and abaxialleaf surfaces; C. Cristate petiole; D. Cross section of petiole withsheath; E. Cross section of petiole showing cristae; F. Abaxial sur-face leaf showing veins cristae; G. Inflorescence; H. Cristate pedun-cle; I. Inflorescence with full and half of spathe removed artificially;J. Staminate flowers; K. Pistillate flowers with lobed ovary (yellow arrow) and staminodes (red arrow).

Homalomena renda A.S.D.Irsyam & M.R.Hariri, sp.nov. 

Etymology: The specific epithet renda is derived from the Indonesian language, where it refers to the term crista. Thisname highlights a defining characteristic of the species,emphasizing the distinct ridges or crests present on theplant.

Vernacular name. In Indonesia, this species is commonly marketedand sold under the local name Homalomena ‘Renda’.This name is widely used among plant enthusiasts, hor-ticulturists, and sellers, particularly in nurseries andplant markets. 

Arifin S.D. Irsyam, Muhammad R. Hariri and Ade A. Setiawan. 2025. Homalomena renda (Araceae), A remarkable New Species from the Rainforests of Jambi, Sumatra. Webbia. Journal of Plant Taxonomy and Geography. 80(2); 249-252. DOI: doi.org/10.36253/jopt-17435  [2025-07-18]

https://itb.ac.id/berita/penemuan-spesies-baru-homalomena-berhiaskan-renda-dan-daun-berdaging-dari-sumatera/62686

[Botany • 2024] Cyrtosperma prasinispathum (Araceae: Lasioideae) • A New fascinating Aroid Species from Papua, Indonesia

Cyrtosperma prasinispathum A.S.D.Irsyam &M.R.Hariri, 

in Hariri, Irsyam, Ariati, Raynalta, Setyanti et Supriyanta, 2024.  

 DOI: doi.org/10.36253/jopt-16076

Abstract   

Cyrtosperma prasinispathum A.S.D.Irsyam & M.R.Hariri is a newly described species of Lasioid discovered in Sorong, Southwest Papua Province, Indonesia. This new species is exclusively described from living specimens that are kept at the Bogor Botanic Gardens. Morphologically, it has a glossy leek-green spathe that is deflected, with a yellowish-green or yellow spadix. Its striking-colored spathe made this species an important candidate for horticultural plants.

Keywords: Araceae, Lasieae, Lasioideae, Malesia, New Guinea

   

Cyrtosperma prasinispathum A.S.D.Irsyam &M.R.Hariri, sp. nov.

Etymology: The specific epithet is derived from the Latin ‘prasinus’ – and ‘spathum’, which signifies the leek-green coloured spathe.

Muhammad R. Hariri, Arifin S.D. Irsyam, Siti R. Ariati, Erick Raynalta, Dwi Setyanti and Ikar Supriyanta. 2024. Cyrtosperma prasinispathum: A New fascinating Aroid Species from Papua, Indonesia. Webbia. Journal of Plant Taxonomy and Geography. 79(2),; 291-294. DOI: doi.org/10.36253/jopt-16076 [2024-09-03]

[Botany • 2025] Rhodospatha rubrinervis • An overlooked Morphological Feature in the Genus Rhodospatha (Araceae: Monsteroideae: Anepsiadeae) revealed through international collaboration, with the Description of A New endemic Species from Costa Rica

 

Rhodospatha rubrinervis M.Cedeño, O.Cubero & O.Ortiz,

in Cedeño-Fonseca, Cubero-Vásquez, Ortiz, Rodríguez-Arias, Serna-Sánchez, Trujillo-Trujillo, Jiménez, Zuluaga et Hay, 2025.

DOI: doi.org/10.3897/phytokeys.260.154762

Abstract

A recent floristic survey in the Pacific slope of the Talamanca Mountain (Costa Rica), has revealed a new species of Rhodospatha, characterised by a bracteolate inflorescence. We describe and fully illustrate Rhodospatha rubrinervis from the Cloudbridge Nature Reserve. A detailed taxonomic description, as well as its distribution, ecology, phenology and conservation assessment are provided, along with a comparative discussion of its morphological affinities with R. forgetii and R. wendlandii. In addition, we present a brief discussion on the presence of a bracteole in Rhodospatha, a morphological character that, although illustrated by H.W. Schott 160 years ago, has not previously been described in detail.

Key words: Cloudbridge Nature Reserve, Monsteroideae, Pérez Zeledón, Talamanca, taxonomy

Rhodospatha rubrinervis. 
 A. Developing inflorescence; B. Spadix in female anthesis; C. Inflorescence with spathe, in female anthesis; D. Inflorescence with open spathe (back view); E. Stylar plate with stigma (left) and one stamen (right); F. Fertile flower, in lateral view; G. Bracteole at the apex of the peduncle; H. Portion of spadix with stigmas in female anthesis; I. Pre-adult plant; J. Portion of adult plant; K. Mature infructescence; L. Seeds; M. Spadix with pink sterile region at the apex; N. Juvenile plant; O. Transversal section of the ovary with two locules.

Photos A–D, I, J, K, L by O. Cubero; E–H, K–O M by M. Cedeño. O. Cubero 005 (USJ).

Rhodospatha rubrinervis.
A. Adult plant with inflorescence in male anthesis without spathe; B. Portion of the petiole with green punctuations and persistent petiolar sheath; C. Mid-rib convex abaxially and primary lateral veins with bright pink colour up to the middle; D. Geniculum dark purple; E. Abaxial surface light green with lilac and white punctuations; F. Longitudinal section of ovary showing 30 ovules per locule along axile placentas. Photos A by O. Cubero; B–E by M. Cedeño; F by A. Serna.

 Rhodospatha rubrinervis M.Cedeño, O.Cubero & O.Ortiz, sp. nov.

Etymology. The species epithet “rubrinervis” refers to the distinctive reddish colouration of the mid-rib and primary lateral veins. This striking venation not only serves as a key diagnostic character in the field, but also highlights the aesthetic appeal and uniqueness of the species within the genus Rhodospatha.

 Marco Cedeño-Fonseca, Oscar Cubero-Vásquez, Orlando O. Ortiz, Marilyn Rodríguez-Arias, Maria Alejandra Serna-Sánchez, Edwin Trujillo-Trujillo, José Esteban Jiménez, Alejandro Zuluaga and Alistair Hay. 2025. An overlooked Morphological Feature in the Genus Rhodospatha (Araceae, Monsteroideae, Anepsiadeae) revealed through international collaboration, with the Description of A New endemic Species from Costa Rica. PhytoKeys. 260: 185-199. DOI: doi.org/10.3897/phytokeys.260.154762

[Botany • 2024] Anthurium dairon-cardenasii (Araceae) • A New Species of Anthurium sect. Belolonchium for Colombia

 

Anthurium dairon-cardenasii López-Flor., Croat & Marco Correa, 

in López-Floriano, Croat, Correa-Munera et Marroquín, 2024. 

DOI: doi.org/10.3417/2024870

 Researchgate.net/publication/378018292 

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 Abstract  

A new species of Anthurium Schott (Araceae) is described, belonging to section Belolonchium (Schott) Engl. Anthurium dairon-cardenasii López-Flor., Croat & Marco Correa is dedicated in honor of the great botanist Dairon Cardenas López, who dedicated his life to the study of the Amazon. The species was recorded in Caquetá, Colombia, in a lower montane wet forest in the framework of the Caquetá BIO project.

KEYWORDS: Andes Mountains, Anthurium, Caquetá, section Belolonchium.

Anthurium dairon-cardenasii López-Flor., Croat & Marco Correa. 

Oscar Mauricio López-Floriano, Thomas B. Croat, Marco Aurelio Correa-Munera, María Raquel Millán Marroquín. 2024. Anthurium dairon-cardenasii, A New Species of Anthurium sect. Belolonchium (Araceae) for Colombia. Novon: A Journal for Botanical Nomenclature. 32(1); 33 - 38. DOI: doi.org/10.3417/2024870 

Researchgate.net/publication/378018292_Anthurium_dairon-cardenasii_New_Species_for_Colombia

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