[Botany • 2021] Vaccinium exiguum (Ericaceae: Vaccinieae) • A New Species from the Ultramafic Summit of Mt. Victoria, Palawan Island, Philippines

Vaccinium exiguum M.N.Tamayo, R.Bustam. & P.W.Fritsch

in Tamayo, Bustamante et Fritsch, 2021.

DOI:  10.3897/phytokeys.179.68323

 facebook.com/PhTaxa 

Abstract

Vaccinium exiguum from the ultramafic summit of Mt. Victoria, Palawan Island, Philippines is here described as a new species of Ericaceae. It closely resembles V. hamiguitanense but is distinct by having much shorter petioles and leaves, longer and glabrous calyx lobes with serrate lobe margins, a larger corolla with deeper sulcations, and longer stamens with spurs oriented laterally. Vaccinium exiguum represents the third Vaccinium species found on the Island of Palawan and 36th in the Philippines.

Keywords: Ericales, endemic species, Malesia, sect. Bracteata, Vaccinioideae

Figure 2.Vaccinium exiguum M.N.Tamayo, R.Bustam. & P.W.Fritsch 
 A flowering branchlet B leaf, abaxial view C lateral view of flower showing ribbed corolla D distal portion of pedicel, as well as hypanthium, calyx lobes and style E stamen in oblique-lateral view showing spurs F stamen in ventral view G cross section of ovary showing seven locules.

Illustrated by Maverick N. Tamayo.

Figure 1. Vaccinium exiguum M.N.Tamayo, R.Bustam. & P.W.Fritsch
A ultramafic summit of Mt. Victoria B flowering branchlets in situ.

Photo A by Alastair Robinson. Photo B by Rene Alfred Anton Bustamante.

Vaccinium exiguum M.N.Tamayo, R.Bustam. & P.W.Fritsch, sp. nov.

 

Diagnosis: Vaccinium exiguum closely resembles V. hamiguitanense, but is distinct by having shorter petioles (0.5–1.0 mm vs. 1.2–1.8 mm), shorter leaves (4.9–9.3 mm vs. 8.8–16.0 mm), longer calyx lobes (1.8–2.0 mm vs. 1.1–1.3 mm) that are glabrous (vs. merely ciliate) with serrate calyx lobe margins (vs. entire), a larger corolla (6.0–7.0 × 4.0–5.0 mm vs. 4.6–5.0 × ca. 2.6 mm) with deeper (vs. shallow) sulcations, and longer stamens (3.5–4.0 mm vs. 2.8–3.5 mm) with spurs oriented laterally (vs. slightly upcurved and oriented ± apically). The calyx lobes of V. exiguum are unique amongst Philippine species in that they are nearly as long as or longer than the hypanthium. Unlike V. hamiguitanense, V. exiguum has a corolla that appears distinctly star-shaped in cross section because of its deep sulcations.

Etymology: The epithet “exiguum” refers to the overall small stature and leaf morphology of the new species.

Distribution and habitat: Vaccinium exiguum is currently known from a single individual from a single location at the exposed ultramafic forest summit of Mt. Victoria, Palawan Island, Philippines at ca. 1700 m elevation.

     

 Maverick N. Tamayo, Rene Alfred Anton Bustamante and Peter W. Fritsch. 2021. Vaccinium exiguum (Ericaceae, Vaccinieae), A New Species from the Ultramafic Summit of Mt. Victoria, Palawan Island, Philippines. PhytoKeys. 179: 145-154. DOI:  10.3897/phytokeys.179.68323

 facebook.com/PhTaxa/posts/3925691914227010

𝑽𝒂𝒄𝒄𝒊𝒏𝒊𝒖𝒎 𝒆𝒙𝒊𝒈𝒖𝒖𝒎

    

[Entomology • 2021] Caenis gretathunbergae, C. oromo, et al. • New Records and Taxa of Caenidae (Insecta: Ephemeroptera) from Ethiopia, with Particular Regard to the River Awash Region

Caenis gretathunbergae 

 Malzacher, 2021

 DOI:  10.18476/2021.826615

Abstract

Four new species of Caenis and a new subspecies of Afrocaenis major are described from Ethiopia: Afrocaenis major ginchicas sp. n. (imagines and larvae), Caenis gretathunbergae sp. n. (imagines and larvae), Caenis oromo sp. n. (larvae), Caenis grafi sp. n. (larvae) and Caenis afrocaenoides sp. n. (imagines), as well as the larval stages of the formerly described Caenis nervulosa Malzacher, 1990. Additionally, a few males of the Palaearctic species Caenis horaria (Linnaeus, 1758) are recorded for the Afrotropical Region. A larval key to the five Ethiopian species with known larvae is provided.

Figs. 16–17. Caenis gretathunbergae sp. n., habitus of larva. – 16. Macro photograph. 17. SEM.

Fig. 15. Caenis gretathunbergae sp. n., male, habitus. 

Peter Malzacher. 2021. New Records and Taxa of Caenidae (Insecta: Ephemeroptera) from Ethiopia, with Particular Regard to the River Awash Region. Integrative Systematics: Stuttgart Contributions to Natural History. 4(1); 1-23. DOI:  10.18476/2021.826615

[Botany • 2021] Shoubiaonia yunnanensis (Amaryllidaceae) • A New Genus from Yunnan Province, China

Shoubiaonia yunnanensis W.H. Qin, W.Q. Meng & K. Liu

in Qin, Meng, Zhang, ... et Liu, 2021. 

DOI: 10.1111/njb.02703 

  facebook.com/NordicJBotany 

 

Abstract

Shoubiaonia yunnanensis is described here as a new genus and species of Amaryllidaceae from Yunnan Province, southwest China. Phylogenetic analyses based on DNA sequences of nuclear ribosomal ITS and three plastid regions (matK, ndhF and rbcL) strongly support Shoubiaonia as a member in the tribe Lycorideae of the Eurasian clade of Amaryllidaceae. However, morphologically S. yunnanensis is readily distinguished from the other genera in the Eurasian clade by its 2-valved spathe, 3-lobed stigma, ovary with two ovules per locule and silver black, subglobose seeds. The new genus is the second genus of the subfamily Amaryllidoideae distributed in natural habitat in China.

Keywords: Amaryllidaceae, new genus, Shoubiaonia, Shoubiaonia yunnanensis

Shoubiaonia yunnanensis W.H. Qin, W.Q. Meng & K. Liu. gen. & sp. nov.

Etymology: The genus epithet Shoubiaonia honors Pro. Shoubiao Zhou from Anhui Normal University, who worked on plant diversity and taxonomy, including Amaryllidaceae and Gesneriaceae, and made important contributions to the subtropical flora in China.

Vernacular name: Shou biao suan shu (守标蒜属) (Chinese), Yun nan shou biao suan (云南守标蒜) (Chinese).

Wei-Hua Qin, Wei-Qi Meng, Dong Zhang, Ying Wang, Zhong-Lin Li, Lu Sun and Kun Liu. 2021. A New Amaryllidaceae Genus, Shoubiaonia, from Yunnan Province, China. Nordic Journal of Botany. DOI: 10.1111/njb.02703

 facebook.com/NordicJBotany/photos/4160690217379861

一种植物新属以我校周守标教授命名

ahnu.edu.cn/info/1107/47523.htm

[Paleontology • 2021] Osteological Revision of the Holotype of the Middle Jurassic Sauropod Dinosaur Patagosaurus fariasi Bonaparte, 1979 (Sauropoda: Cetiosauridae)

Patagosaurus fariasi Bonaparte, 1979

in Holwerda, Rauhut et Pol, 2021.

DOI: 10.5252/geodiversitas2021v43a16 

Illustration: Joschua Knuppe twitter.com/JoschuaKnuppe

Middle Jurassic sauropod taxa are poorly known, due to a stratigraphic bias of localities yielding body fossils. One such locality is Cerro Cóndor North, Cañadón Asfalto Formation, Patagonia, Argentina, dated to latest Early−Middle Jurassic. From this locality, the holotype of Patagosaurus fariasi Bonaparte 1986 is revised. The material consists of the axial skeleton, the pelvic girdle, and the right femur. Patagosaurus is mainly characterised by a combination of features mainly identified on the axial skeleton, including the following: 1) cervical centra with low Elongation Index; 2) high projection of the postzygodiapophyseal lamina; 3) deep anterior pleurocoels that are sometimes compartmentalized in cervicals; 4) high projection of the neural arch and spine in dorsal vertebrae and anterior(most) caudal vertebrae; 5) deep pneumatic foramina in posterior dorsals which connect into an internal pneumatic chamber; and 6) anterior caudal vertebrae with ‘saddle’ shaped neural spines. Diagnostic features on the appendicular skeleton include: 1) a transversely wide and anteroposteriorly short femur; 2) a medial placement of the fourth trochanter on the femur; and 3) an anteroposteriorly elongated ilium with a rounded dorsal rim, with hook-shaped anterior lobe. The characters that are diagnostic for Patagosaurus are discussed, and the osteology of Patagosaurus is compared to that of Early and Middle Jurassic (eu)sauropods from both Laurasia and Gondwana.

KEYWORDS: Sauropoda, Eusauropoda, Patagosaurus, Gondwana, Middle Jurassic, Patagonia, pneumaticity

Femke M. Holwerda, Oliver W. M. Rauhut and Diego Pol. 2021. Osteological Revision of the Holotype of the Middle Jurassic Sauropod Dinosaur Patagosaurus fariasi Bonaparte, 1979 (Sauropoda: Cetiosauridae).  Geodiversitas. 43 (16); 575-643. DOI: 10.5252/geodiversitas2021v43a16.  geodiversitas.com/43/16

  twitter.com/JoschuaKnuppe/status/1418250641890291713

[Botany • 2021] Amomum fangdingii (Zingiberaceae) • A New Species from Guangxi, China [Taxonomic Studies on Amomum in China III]

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 

in Ye, Leong-Škorničková, Bai et Xia, 2021. 

DOI: 10.11646/phytotaxa.490.3.4 

 Researchgate.net/publication/350101039 

 

Abstract

A plant formerly misidentified as Amomum maximum in Guangxi, China, is described here as a new species, namely A. fangdingii. A detailed description, distribution map and illustrations are provided together with a taxonomic key distinguishing A. fangdingii from eight morphologically similar species characterised by cincinnate inflorescences occurring in Cambodia, China, Laos and Vietnam.

Keywords: Amomum maximum, A. velutinum, gingers, misidentification, Monocots. 

FIGURE 2. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Bladeless leaf sheaths with crisped margins, (C) Infructescence, (D) Dissection of a flower (from left to right): calyx (split open), corolla lobes, ovary with epigynous glands, style and pedicel, labellum, floral tube with stamen and two minute lateral staminodes (front view, side view & back view).

Photos by Ye Xing-Er; (A)-(C) based on X.E. Ye 160, (D) based on X.E. Ye 12.

FIGURE 1. Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia 
(A) Habit, (B) Leaves, (C) Ligule, (D) Rhizome with inflorescences, (E) Bladeless leaf sheaths with crisped margins, (F) Flower (front view), (G) Flower (side view), (H) A single inflorescence and dissection of a cincinnus (from left to right): cincinnus, bract, single flower, single flower bud, bracteole, (I) Infructescence.

Photos (A)-(H) by Ye Xing-Er; based on X.E. Ye 127. 

Photo (I) by Chen Juan; based on J.B. Ni & J. Chen 061008.

Amomum fangdingii X.E.Ye, Škorničk. & N.H.Xia sp. nov.

Xing-Er Ye, Jana Leong-Škorničková, Lin Bai and Nian-He Xia. 2021. Taxonomic Studies on Amomum (Zingiberaceae) in China III: Amomum fangdingii, A New Species from Guangxi. Phytotaxa. 490.3; 263–270. DOI: 10.11646/phytotaxa.490.3.4  

Researchgate.net/publication/350101039_Amomum_fangdingii_a_new_species_from_Guangxi_China

[Herpetology • 2021] First National Record of Gracixalus quangi and G. yunnanensis (Anura: Rhacophoridae) from Thailand

 ปาดจิ๋วมรกต Gracixalus quangi Rowley, Dau, Nguyen, Cao & Nguyen, 2011
ปาดลายเลอะยูนนาน G. yunnanensis Yu, Li, Wang, Rao, Wu & Yang, 2019
Habitat of Gracixalus quangi (A) and G. yunnanensis (B)located in Doi Phu Kha NP., Nan Province, Thailand.  
 

in Lorphengsy, Nguyen, Poyarkov, ... et Suwannapoom, 2021. 

DOI: 10.3897/BDJ.9.e67667

Photos by P. Pawangkhanant.

 facebook.com/706822816379164

Abstract

Background: The bushfrog genus Gracixalus Delorme, Dubois, Grosjean & Ohler, 2005 is found in southern and south-western China, Vietnam, Laos, Thailand and Myanmar. It is presently comprised of 17 species. In Thailand, only two species have been recorded, namely G. carinensis (Boulenger) and G. seesom (Massui, Khonsue, Panha & Eto). The latter of these two species is currently known to be endemic to the country.

New information: Based on recent field work conducted in 2019 in Doi Phu Kha National Park, Nan Province of northern Thailand, we are reporting two new records of the genus Gracixalus, G. quangi and G. yunnanensis, from Thailand, based on morphological and molecular evidence. In addition, this is the first study to report on the identification of a female specimen of G. yunnanensis. Furthermore, morphological data and natural history notes of the aforementioned species in Thailand have been provided, along with updated locations for the distribution of both species.

Keywords: Gracixalus quangi, G. yunnanensis, new record, 16s rRNA, Nan Province

Figure 2. Male Gracixalus quangi (AUP-00388) collected from Doi Phu Kha NP, Nan Province, Thailand. A. Lateral view; B. Ventral view.  
Figure 4. Male of G. yunnanensis (AUP-1985) in life. A. Lateral view; B. Dorsal view; C. Volar view of the left hand; D. Plantar view of the right foot.

Photos by P. Pawangkhanant.

Male Gracixalus quangi (AUP-00388) collected from Doi Phu Kha NP, Nan Province, Thailand. A. Lateral view; B. Ventral view.  
Male of G. yunnanensis (AUP-1985) in life. A. Lateral view; B. Dorsal view. 
Habitat of Gracixalus quangi (A) and G. yunnanensis (B) located in Doi Phu Kha NP., Nan Province, Thailand. 

 Photos by P. Pawangkhanant.

ปาดจิ๋วมรกต Gracixalus quangi 

Rowley, Dau, Nguyen, Cao & Nguyen, 2011

ปาดลายเลอะยูนนาน G. yunnanensis 

Yu, Li, Wang, Rao, Wu & Yang, 2019

 Sengvilay Lorphengsy, Tan Van Nguyen, Nikolay A. Poyarkov, Yun-He Wu, Parinya Pawangkhanant, Supaporn Passorn, Jing Che and Chatmongkon Suwannapoom. 2021. First national record of Gracixalus quangi Rowley, Dau, Nguyen, Cao & Nguyen, 2011 and G. yunnanensis Yu, Li, Wang, Rao, Wu & Yang, 2019 (Amphibia: Anura: Rhacophoridae) from Thailand. Biodiversity Data Journal. 9: e67667. DOI: 10.3897/BDJ.9.e67667

 facebook.com/706822816379164/posts/1300116577049782

[Herpetology • 2021] Gonocephalus liogaster, Gekko (Ptychozoon) cicakterbang, Dasia grisea, Oligodon signatus, et al.• Photographic Records of Reptiles from Yala and Narathiwat Provinces Reveal Seven New Species for Thailand

กิ้งก่าดงตาสีฟ้า | Gonocephalus liogaster
ตุ๊กแกบินมลายู | Gekko (Ptychozoon) cicakterbang

ตุ๊กแกเรียวมลายู | Gekko (Sundagekko) browni 

งูปี่แก้วหัวศร | Oligodon signatus

in Hala Bala Wildlife Sanctuary, Yala and Narathiwat Provinces. 

in Pawangkhanant, Smits, Dugdale, ... et Poyarkov, 2021. 

  Researchgate.net/publication/353384955

Photos by P. Pawangkhanant, I. Dugdale and T. Smits. 

 facebook.com/HerpGuideParinya

Abstract

We report seven new country records of species of reptiles on the basis of recent herpetological surveys between 2015 – 2019 in southern Thailand: Gekko (Ptychozoon) cicakterbang, Dasia grisea, and Sphenomorphus sungaicolus from Yala Province; Gonocephalus liogaster, Gekko (Sundagekko) browni, Oligodon signatus, and Xenochrophis maculatus from Narathiwat Province. Our recent findings bring the total number of reptiles recorded in Thailand to 452 species. Furthermore, our results suggest that further intensified herpetological research efforts and international collaborations are required to increase our knowledge on the herpetofaunal diversity in the tropical rain forests of southern Thailand near the border with peninsular Malaysia.

Keywords: Gonocephalus liogaster; Gekko cicaktebang; Gekko browni; Dasia grisea; Sphenomorphus sungaicolus; Oligodon signatus; Xenochrophis maculatus; new records; distribution; taxonomy; southern Thailand

Gonocephalus liogaster in Hala Bala WS, Narathiwat Province, Thailand in situ:
two adult males observed on 6 April 2019 (A, B; UTADC 9572 and UTADC 9573, respectively);
one adult female observed on 5 April 2019 (C; UTADC 9575);
one subadult (sex unknown; UTADC 9576) observed on 7 April 2019 (D).

Photos by T. Smits.

Gekko (Ptychozoon) cicakterbang in Betong District, Yala Province, Thailand (A – D) and 
Gekko (Sundagekko) browni in Sirindhorn Waterfall, Hala Bala Wildlife Sanctuary, Narathiwat Province, Thailand (E, F):
 A, General dorsal view in situ (UTADC 9570b), B, dorsal head ventral view (UTADC 9570c); C, ventral head view (UTADC 9570d); D, cloacal region and ventral tail view (UTADC 9570e);
E, lateral view in situ (UTADC 9571a); F, dorso-lateral view in situ (UTADC 9571b).

Photos by P. Pawangkhanant (A – D) and I. Dugdale (E – F).

Sphenomorphus sungaicolus in Betong District, Yala Province, Thailand. 
general lateral view in situ (UTADC 9578a)

Photo by P. Pawangkhanant.

  

Reptile: Squamata: 

Sauria 

Family Agamidae Gray, 1827 

Gonocephalus liogaster (Günther, 1872) 

Tropical Forest Dragon | กิ้งก่าดงตาสีฟ้า 

Family Gekkonidae Gray, 1825 

Gekko (Ptychozoon) cicakterbang (Grismer, Wood, Grismer, Quah, Thy, Phimmachak, Sivongxay, Seateun, Stuart, Siler, Mulcahy, Anamza et Brown, 2019) 

Malaysia Parachute Gecko | ตุ๊กแกบินมลายู

Gekko (Sundagekko) browni Russell, 1979 

Brown’s Gecko | ตุ๊กแกเรียวมลายู

Family Scincidae Gray, 1825 

Dasia grisea (Gray, 1845) 

Gray Dasia | จิ้งเหลนต้นไม้ลายแถบ 

Sphenomorphus sungaicolus Sumarli, Grismer, Wood, Ahmad, Rizal, Ismail, Izam, Ahmad et Linkem, 2016

 Malaysian Riparian Skink | จิ้งเหลนภูเขามลายู

  Serpentes 

Family Colubridae Oppel, 1811 

Oligodon signatus (Günther, 1864) 

Banded Kukri Snake | งูปี่แก้วหัวศร 

Family Natricidae Bonaparte, 1838

 Xenochrophis maculatus (Edeling, 1864)

 Spotted Keelback | งูลายสอหลังจุด

(A – C) Gonocephalus liogaster in situ in Hala Bala WS, Narathiwat Province; 

(A – C) Gekko (Ptychozoon) cicakterbang in Betong District, Yala Province; 

 (E) Gekko (Sundagekko) browni in Sirindhorn Waterfall, Hala Bala Wildlife Sanctuary, Narathiwat Province; 

(A – B) Oligodon signatus in situ in Hala Bala WS., Narathiwat Province. 

Parinya Pawangkhanant, Ton Smits, Ian Dugdale, Kanokwan Yimyoo, Tan Van Nguyen, Chatmongkon Suwannapoom and Nikolay A. Poyarkov. 2021. Photographic Records of Reptiles from Yala and Narathiwat Provinces Reveal Seven New Species for Thailand. Russian Journal of Herpetology. 28(3); 152-162. DOI: 10.30906/1026-2296-2021-28-3-152-162

  Researchgate.net/publication/353384955_Photographic_records_of_reptiles_from_Yala_and_Narathiwat_provinces_reveal_seven_new_species_for_Thailand

 facebook.com/HerpGuideParinya/posts/10224289543138043

   

[Paleontology • 2021] Powered Flight in Hatchling Pterosaurs: Evidence from Wing Form and Bone Strength

in Naish, Witton et Martin-Silverstone, 2021. 

 DOI: 10.1038/s41598-021-92499-z

llustrations: Mark P. Witton 

Abstract

Competing views exist on the behaviour and lifestyle of pterosaurs during the earliest phases of life. A ‘flap-early’ model proposes that hatchlings were capable of independent life and flapping flight, a ‘fly-late’ model posits that juveniles were not flight capable until 50% of adult size, and a ‘glide-early’ model requires that young juveniles were flight-capable but only able to glide. We test these models by quantifying the flight abilities of very young juvenile pterosaurs via analysis of wing bone strength, wing loading, wingspan and wing aspect ratios, primarily using data from embryonic and hatchling specimens of Pterodaustro guinazui and Sinopterus dongi. We argue that a young Sinopterus specimen has been mischaracterised as a distinct taxon. The humeri of pterosaur juveniles are similar in bending strength to those of adults and able to withstand launch and flight; wing size and wing aspect ratios of young juveniles are also in keeping with powered flight. We therefore reject the ‘fly-late’ and ‘glide-early’ models. We further show that young juveniles were excellent gliders, albeit not reliant on specialist gliding. The wing forms of very young juveniles differ significantly from larger individuals, meaning that variation in speed, manoeuvrability, take-off angle and so on was present across a species as it matured. Juveniles appear to have been adapted for flight in cluttered environments, in contrast to larger, older individuals. We propose on the basis of these conclusions that pterosaur species occupied distinct niches across ontogeny.

Visual summary of how basic, size-dependent flight parameters (wing loading, wingspan and aspect ratio) could have influenced pterosaur ecology throughout ontogeny. The animals shown here are giant azhdarchids, species which likely had the largest ontogenetic mass differentials of any pterosaurs (see text) and thus potentially the broadest ecological range across their various growth stages. Azhdarchids were primarily terrestrial pterosaurs, which is reflected in this figure, though the environments and points made here are generalised: they do not expressly pertain to any azhdarchid taxon. Ontogenetic niche exploitation may have differed in other environments.

Darren Naish, Mark P. Witton and Elizabeth Martin-Silverstone. 2021. Powered Flight in Hatchling Pterosaurs: Evidence from Wing Form and Bone Strength. Scientific Reports. 11: 13130. DOI: 10.1038/s41598-021-92499-z

Newly-hatched pterosaurs may have been able to fly

bristol.ac.uk/news/2021/july/pterosaurs-flight.html

[Herpetology • 2021] Amolops teochew • A New Species of Torrent Frog (Anura, Ranidae) from the Coastal Hills of Southeastern China

 

Amolops teochew

Zeng, Wang, Lyu & Wang, 2021

DOI: 10.11646/zootaxa.5004.1.6 

 weibo.com 

 

Abstract

The Amolops populations in the coastal hills in eastern Guangdong and southern Fujian, China, were controversially recorded as A. hongkongensis or A. daiyunensis before. In this study, based on the morphological examination and phylogenetic analysis of the specimens from these areas, a new species, Amolops teochew sp. nov., is described. Amolops teochew sp. nov. can be distinguished reliably from A. hongkongensis and A. daiyunensis by a combination of characteristics morphologically and distinct divergences genetically. The description of the new species highlights the Amolops diversity in the limited hilly region of southeastern China, which is remarkably higher than that in the more extensive inland region of southeastern China.

Keywords: Amolops daiyunensis group, Amolops hongkongensis, Amolops teochew sp. nov., biogeography, chresonymy, morphology, phylogeny, Amphibia

 Amolops teochew sp. nov.

Zhao-Chi Zeng, Jian Wang, Zhi-Tong Lyu and Ying-Yong Wang. 2021. A New Species of Torrent Frog (Anura, Ranidae, Amolops) from the Coastal Hills of Southeastern China. Zootaxa. 5004(1); 151-166. DOI: 10.11646/zootaxa.5004.1.6

  weibo.com/3774167367/Kpu2snzxf

    

[Botany • 2021] Curcuma wanenlueanga (Zingiberaceae) ว่านเอ็นเหลือง • A New Species of Curcuma from Thailand

 Curcuma wanenlueanga Saensouk, Thomudtha & Boonma

in Saensouk, Boonma, Thomudtha, et al., 2021. 

ว่านเอ็นเหลือง || DOI: 10.13057/biodiv/d220752

facebook.com: T. Boonma

Abstract

 Curcuma wanenlueanga Saensouk, Thomudtha & Boonma, a new species of Curcuma subgenus Curcuma (Zingiberaceae) from Thailand was described with detailed illustrations, and photographs. The dominant morphological description is terminal inflorescence, leaf adaxially green with reddish-purple along the midrib, leaf-sheath with reddish-brown tinge. Moreover, the color and smell rhizome of C. wanenlueanga has yellow with a darker core internally. It is distributed in Mae Hong Son Province, Northern Thailand, and cultivated throughout the country, i.e. Nakhon Nayok, Maha Sarakham, Chiang Mai, Tak, Chantaburi, Suratthani, and Kanchanaburi Provinces. It is used as Thai traditional medicinal. It grows in in sandy loam soil and well-drained in the mixed-deciduous forest, at elevation 700-900 m asl. It is accompanied by a revised key to 26 species of Curcuma subgenus Curcuma from Thailand.

Keywords: Curcuma, new species, Thailand, Zingiberaceae

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma sp. nov.
(A) inflorescence with flowers and sterile bract–side view, (B) lateral staminodes, (C) labellum, (D) dorsal corolla lobe–front and side view, (E) lateral corolla lobes, (F) anther–front and side view, (G) habitus, (H) flower with calyx and ovary, (I) bracteoles, (J) calyx, (K) epigynous glands with ovary.

Drawn by Thawatphong Boonma

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma sp. nov.
 (A) flower–side view, (B) back view of flower with the back view of stamen, (C) flower with bracteoles and inflorescence with flowers–side view, (D) flower–front view, (E) plants in natural habitat in oblique view to show leaf-adaxially with reddish-purple tinge along the midrib and its inflorescence.

Photographed by Thawatphong Boonma

Curcuma wanenlueanga Saensouk, Thomudtha & Boonma, sp. nov. 

subgenus Curcuma

Curcuma wanenlueanga is belonged to the subgenus Curcuma according to the presence of epigynous glands, inflorescence with coma bracts, flowers closed-form, anther spurs acute, and downward-pointed. The morphological description and producing terminal inflorescence of C. wanenlueanga make it similar to C. longa and C. amada, but differ in having leaf adaxially green with reddish-purple along the midrib, leaf-sheath with reddish-brown tinge, whereas C. longa and C. amada are green without reddish tinge. Moreover, the color and smell of their rhizome can easily distinguishable from each other which C. amada has light yellow, white towards the periphery, and smell of green mango while C. wanenlueanga has yellow with a darker core internally and C. longa has deep orange-yellow internally, slightly to strongly aromatic respectively without the smell of green mango as in C. amada (Table 1).

Etymology: The specific epithet ‘wanenlueanga’ derived from Thai vernacular name of this species which “wan” means “herbs”, “en” means “tendons” referred to its medicinal properties used in traditional medicine to treat beriberi related to tendons and "lueang" means "yellow" referred to its yellow rhizome.

Vernacular name: “Wan-En-Lueang - ว่านเอ็นเหลือง” in Thai language.

 

Surapon Saensouk, Thawatphong Boonma, Adisak Thomudtha, Pariya Thomudtha and Piyaporn Saensouk. 2021. Curcuma wanenlueanga (Zingiberaceae), A New Species of Subgenus Curcuma from Thailand. Biodiversitas: Journal of Biological Diversity. 22(7); 2988-2994. DOI: 10.13057/biodiv/d220752

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