[Botany • 2026] Lepidagathis argentea (Acanthaceae) • A New Species from Thailand, and Updated Synopsis Lepidagathis of Thailand

Lepidagathis argentea Kantachot & Chantar., 

 

in Kantachot et Chantaranothai, 2026.

สังกรณีเงิน  |  DOI: doi.org/10.20531/tfb.2026.54.2.07 

Abstract

In this synopsis of the genus Lepidagathis for the Flora of Thailand, nine species are recognized. This includes Lepidagathis argentea, a new species collected from limestone bedrock in Tak Province, and three species newly recorded for Thailand, L. dulcis, L. purpuricaulis and L. thorelii. Lepidagathis chiengmaiensis and L. thyrsiflora, are reduced to synonyms of L. incurva and L. fasciculata, respectively. The following names have been lectotypified: Lepidagathis chiengmaiensis, L. chlorostachya, L. dissimilis, L. dulcis, L. falcata and L. thorelii. A genus description with key to species, nomenclatural notes, distributional data and specimens examined are provided.

Keywords: Lamiales, lectotype, new record, new species, taxonomy

Drawing of Lepidagathis argentea Kantachot & Chantar.
 A. habit, B. inflorescence with flowers, C. external surface of calyx, D. bracteoles, E. sterile bracts, F. gynoecium, G. fertile bracts, H. flower, J. capsule and seeds, K. seed and embryo.

Drawn from Kladwong & Kantachot 2025-1 (KKU) by K. Tuanku.

Lepidagathis argentea Kantachot & Chantar.
A. habitat, B. habit, C.-D. inflorescences with flowers.

Photos by P. Kladwong, W. Kiewbang and S. Suddee.

Lepidagathis argentea Kantachot & Chantar., sp. nov.

Chortip Kantachot and Pranom Chantaranothai. 2026. Lepidagathis (Acanthaceae) of Thailand: New Species and Updated Synopsis. Thai Forest Bulletin (Botany), 54(2), 64–75. DOI: doi.org/10.20531/tfb.2026.54.2.07  [2026-07-02] 

[Botany • 2025] Strobilanthes sirindhorniae (Acanthaceae) • A New Species from Thailand

 

Strobilanthes sirindhorniae Kladwong & Chantar., 

in Kladwong, Modsang et Chantaranothai, 2025. 

Tropical Natural History. Supple. 8; 

ฮ่อมสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267434

Abstract

A species new to science, belonging to Strobilanthes from Thailand is described. Strobilanthes sirindhorniae Kladwong & Chantar., sp. nov. is found on limestone in northern Thailand. It is morphologically similar to S. maxwellii J.R.I.Wood and S. rosea Nees. A comparison table with similar and closely related species and a distribution map, and an illustration of S. sirindhorniae sp. nov. are provided.

 Strobilanthes sirindhorniae Kladwong & Chantar., sp. nov.

ฮ่อมสิรินธร

Pornchai Kladwong, Naphat Modsang and Pranom Chantaranothai. 2025. A New Species of Strobilanthes Blume (Acanthaceae) from Thailand. Tropical Natural History. Supple. 8; 220-226. DOI: doi.org/10.58837/tnh.25.8.267434 [2025-10-14]

[Crustacea • 2025] Paralona sirindhornae & Karualona cambodiaensis • Two New Species of Cladocera (Cladocera: Chydoridae) from Southeast Asia

Paralona sirindhornae 

Sinev & Sanoamuang, 2025

 Tropical Natural History. Suppl. 8; 

คลาโดเซอแรนสมเด็จพระเทพรัตน์  ||  DOI: doi.org/10.58837/tnh.25.8.267184 

Abstract

Two new cladocera species of the family Chydoridae (Crustacea: Cladocera) are described from Southeast Asia. Populations of Paralona sirindhornae sp. nov. were found in Thailand and Cambodia, while Karualona cambodiaensis sp. nov. was detected in Cambodia only. Paralona sirindhornae sp. nov. differs from the only other species of the genus Paralona Šramek-Hušek, Strašcraba et Brtek, 1962, namely, Holarctic P. pigra (Sars, 1862), in its smaller size, different position of the head pores, and the morphology of thoracic limbs III–V. Our data suggest that the populations of Paralona from South America and Africa also belong to independent species rather than P. pigra. Karualona cambodiaensis sp. nov. differs from other species of the genus in the unique morphology of the posteroventral angle of the valves, as well as in the body shape and morphology of the antenna. The morphology and taxonomic position of two new species are discussed. Both new species appear to be extremely rare in Southeast Asia, and their discovery is a result of recent intensive sampling efforts.

Keywords: biodiversity, Lake Bueng Khong Long, Cambodia, rare species, taxonomy, Thailand

  Paralona sirindhornae sp. nov.

คลาโดเซอแรนสมเด็จพระเทพรัตน์

A, Paralona sirindhornae sp. nov. from Lake Bueng Khong Long, Bueng Khong Long District, Bueng Kan Province, Thailand (type locality), adult parthenogenetic female.
B, Karualona cambodiaensis sp. nov. from a canal at Ropeakpen, Baray district, Kampong Thom Province, Cambodia (type locality), adult parthenogenetic female.

Artem Y. Sinev and La-orsri Sanoamuang. 2025. Paralona sirindhornae sp. nov. and Karualona cambodiaensis sp. nov., Two New Species of Cladocera (Crustacea: Cladocera: Chydoridae) from Southeast Asia.  Tropical Natural History. Suppl. 8; 345-358. DOI: doi.org/10.58837/tnh.25.8.267184 [2025-10-20]

[Botany • 2024] Typhonium fornicatum • A New Species from Bueng Kan Province, Northeastern Thailand [Studies on Typhonium (Araceae) of Thailand II]

Typhonium fornicatum P.Saensouk, K.Z.Hein & Saensouk,  

in P. Saensouk, S. Saensouk, Hein, Boonma, Sengthong, Rakarcha et Warseno, 2024.

 taiwania.ntu.edu.tw/abstract/2027

  facebook.com/TaiwaniaOffice

Abstract

Typhonium fornicatum from Bueng Kan Province (Northeastern Thailand) is described and illustrated as a species new to science. Detailed description, color plates, discussion of similar taxa, phenology, distribution, and conservation status assessment are provided.

Keyword: Aroideae, Areae, Indochina, plant taxonomy, Typhonium circinnatum, Typhonium khonkaenense

Typhonium fornicatum sp. nov.
A. Excavated flowering and fruiting plant, B. Hastate leaf (left showing adaxial surface; right showing abaxial surface), C. Narrowly ovate leaf (left showing adaxial surface; right showing abaxial surface), D. Front view of inflorescence, E. Side view of inflorescence, F. Spadix at pistillate anthesis, nearside spathe artificially removed, G. Spathe (left showing front view; right showing back view), H. Detail of spadix showing pistillate zone, sterile interstice and staminate zone (nearside spathe artificially removed) & I. Berries.

Scale bars: A.=3 cm, B., C., D., E. & F.=2 cm, G.=1 cm, H. & I.=5mm. 

Photos by: Khant Zaw Hein.

 Detail of spadices showing pistillate zone, sterile interstice and staminate zone (nearside spathe artificially removed).
A. Typhonium fornicatum sp. nov., B. T. khonkaenense & C. T. circinnatum.

Photos by: Khant Zaw Hein (A & B) and Wilbert Hetterscheid (C).

Typhonium fornicatum P.Saensouk, K.Z.Hein & Saensouk, sp. nov. 

Diagnosis: This new species differs from all other Typhonium species by having the fewest staminodes (only three) covering the lower portion of the sterile interstice. Typhonium fornicatum is most similar to T. khonkaenense A. Galloway & Charoenwong (Galloway, 2015) (Fig. 2B), but can be readily distinguished by its fornicate spathe limb (vs. recurved spathe limb), much shorter spadix (ca. 7 cm vs. ca. 15 cm), fewer staminodes on the lower portion of the sterile interstice (3 vs. 8–10), and a spreading-declinate appendix (vs. erect appendix).

Etymology: The specific epithet is derived from the Latin "fornicatus" (arched), referring to the shape of the spathe limb.

Typhonium fornicatum sp. nov. Plants in habitat.

Photo by: Khant Zaw Hein.

Piyaporn Saensouk, Surapon Saensouk, Khant Zaw Hein, Thawatphong Boonma, Anousone Sengthong, Sarayut Rakarcha and Tri Warseno. 2024. Studies on Typhonium (Araceae) of Thailand II: Typhonium fornicatum, A New Species from Bueng Kan Province, Northeastern Thailand. Taiwania. 69(4); 487-490. DOI: 10.6165/tai.2024.69.487  taiwania.ntu.edu.tw/abstract/2027

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[Botany • 2024] Amischotolype balslevii (Commelinaceae: Tradescantieae) • A New Species from Thailand

  

Amischotolype balslevii Boonsuk, Chantar. & Kantachot, 

in Boonsuk, Chantaranothai et Kantachot, 2024.

ม่วงศรีอุดร  ||  DOI: 10.3767/blumea.2024.69.01.06

 www.science.UP.ac.th

 Photographs by B. Boonsuk.

Abstract 

Amischotolype balslevii (Commelinaceae), a new species from Ban Dung, Udon Thani, northeastern Thailand is presented. The new species is distinguished from the resembling taxa, A. divaricata and A. gracilis, by its puberulent to glabrous stem nodes, glabrous leaf sheaths and pseudo-petioles, longer sepals, and ellipsoid and purplish white fruits. A morphological description and illustrations are provided, along with information on the species distribution, habitat, and conservation status.

Keywords: Amischotolype; Commelinaceae; Thailand; fruit; sepal

Amischotolype balslevii Boonsuk, Chantar. & Kantachot.
a. Habit; b. leaf sheath, mouth, and pseudopetiole; c. leaf margin and submarginal hairs on upper surface; d. inflorescence; e. young capsule with sepals; f. infructescence; g. mature capsule with sepals and bracteoles; h. seeds.

 Scale bars: b, e = 1 cm; c = 2 cm; g = 1 mm; h = 3 mm. 

 Photographs by B. Boonsuk.

 

Amischotolype balslevii Boonsuk, Chantar. & Kantachot, sp. nov. 

 Nodes puberulent to glabrous; leaf sheaths, lower surface of pseudo-petioles, sepals and filaments glabrous; sepals 10–14 mm long; fruits ellipsoid, 16–18 mm long, purple-white.

Etymology. The name of this species honours Professor Henrik Balslev, Aarhus University, Denmark, who encouraged the authors to conduct research on the Commelinaceae for the Flora of Thailand Project.

 Boonchuang Boonsuk, Pranom Chantaranothai and Chortip Kantachot. 2024. A New Species of Amischotolype Hassk. (Commelinaceae: Tradescantieae) from Thailand. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: 10.3767/blumea.2024.69.01.06

 www.science.UP.ac.th/new/1035

  

 ม่วงศรีอุดร (Amischotolype balslevii Boonsuk, Chantar. & Kantachot) พืชชนิดใหม่ของโลก ในวงศ์ผักปลาบ (Commelinaceae) ถูกค้นพบโดย ผศ.ดร.บุญช่วง บุญสุข จากสาขาวิชาชีววิทยา คณะวิทยาศาสตร์ มหาวิทยาลัยพะเยา ร่วมกับ ศ.ดร.ประนอม จันทรโณทัย จากภาควิชาชีววิทยา คณะวิทยาศาสตร์ มหาวิทยาลัยขอนแก่น และ ผศ.ดร.ช่อทิพย์ กัณฑโชติ จากภาควิชาวิทยาศาสตร์ชีวภาพ คณะวิทยาศาสตร์ มหาวิทยาลัยอุบลราชธานี ในการดำเนินการศึกษาวิจัยทบทวนทางอนุกรมวิธานของพืชวงศ์ผักปลาบสำหรับโครงการพรรณพฤกษชาติแห่งประเทศไทย (Flora of Thailand) ซึ่งได้รับงบประมาณสนับสนุนจากทุนสนับสนุนงานพื้นฐาน (Fundamental Fund) พ.ศ. 2565 โดยได้ตีพิมพ์เผยแพร่ลงในวารสาร Blumea เล่มที่ 69 หน้า 50 ค.ศ. 2024 (DOI: https://doi.org/10.3767/blumea.2024.69.01.06) คำระบุชนิด “balslevii” ตั้งขึ้นเพื่อเป็นเกียรติแก่ Prof. Henrik Balslev ผู้เชี่ยวชาญด้านพฤกษศาสตร์แห่งมหาวิทยาลัยออร์ฮุส ประเทศเดนมาร์ก

          พืชชนิดนี้มีลักษณะเด่นเป็นพืชล้มลุกปีนป่าย ลำต้น กาบใบ และแผ่นใบมีผิวเกลี้ยง กลีบเลี้ยงมีสีม่วง ผลมีสีขาวแกมม่วง ยาวมากกว่ากลีบเลี้ยง สำหรับตัวอย่างต้นแบบแรกของพืชชนิดนี้เก็บจากพื้นที่ อ.บ้านดุง จ.อุดรธานี นอกจากนี้ยังพบว่าพืชชนิดนี้มีการกระจายพันธุ์ในอีกหลายจังหวัดของประเทศไทย ได้แก่ เลย บึงกาฬ นครพนม ชลบุรี และจันทบุรี รวมถึงในประเทศลาวอีกด้วย

[Botany • 2024] Thaigardenia (Rubiaceae: Gardenieae) • A New Genus distributed from Thailand to South China

T. similis (Craib) K.M.Wong & L.Neo comb. nov., 
T. collinsiae (Craib) K.M.Wong, Teerawat. & Sungkaew comb. nov.,

Thaigardenia Sungkaew, Teerawat., Chamch. & K.M.Wong, gen. nov.

 

in Sungkaew, Arthan, Teerawatananon, Chamchumroon, Neo et Wong, 2024. 

DOI:10.20531/tfb.2024.52.1.04

Photos: D. Prathumthong, A. Teerawatananon and K.M. Wong.

Abstract

Identified as Gardenia over a century ago, three known species from Thailand to south China differ considerably from typical members of that genus, from which growth habits, aspects of branch architecture and corolla shape set them apart. They form a new genus, here named Thaigardenia, the species of which are scrambling to thicket-forming shrubs to sometimes treelets or small trees. They have typically unequal (asymmetric) development of each internode that offsets what began as opposite pairs of axillary buds (and potential axillary branches) from subtending leaf axils at the same level, and small infundibular corollas with insignificant tubular bases. In contrast, typical Gardenia are non-scrambling shrubs or trees, often have extra-axillary buds or branches that consistently continue to develop at the same level (i.e., remaining opposite); and showy hypocrateriform (salverform) corollas with elongate tubular bases. The unequal development of different sides of an internode that brings an initially opposite pair of axillary buds (branches) to different levels, so that they do not appear paired subsequently, is, as far as is known, unique and unknown in other Rubiaceae or opposite-leaved plants; this shared feature is a key synapomorphic character for species of the newly recognised genus.

Keywords: Branch architecture, Gardenia, hypocrateriform, infundibular

Open flower (inset) and fruiting twig of Thaigardenia similis (Craib) K.M.Wong & L.Neo, showing narrowly triangular lobes on a short calyx tube.

Photos: D. Prathumthong (flower) and A. Teerawatananon.

Thaigardenia Sungkaew, Teerawat., Chamch. & K.M.Wong, gen. nov.

Thaigardenia is a new genus of the Rubiaceae, allied to Gardenia J.Ellis, differing in the species being shrubs with a scrambling to thicket-forming habit or small trees with crooked sympodial trunks (vs Gardenia s.s. which are mostly trees with monopodial trunks or non-thicket forming bushes), developing extra-axillary buds and branches at different distances from a leaf-pair at the same node on stems and branches (sometimes these extra-axillary buds more than one per leaf axil) (vs with extra-axillary buds and branches always at the same level, and solitary buds in Gardenia), broad-triangular stipules fused along their edges (vs typical Gardenia spp. with stipules fused into a cylindric sheath split slightly on one side), infundibular corolla with insignificant tubular bases much shorter than the inflated upper portion (vs hypocrateriform corollas with relatively long basal tubes with a hardly widened uppermost portion in Gardenia), and pollen issued as tetrads. 

Type: Thaigardenia collinsiae (Craib) K.M.Wong, Teerawat. & Sungkaew.

Etymology.— The name Thaigardenia refers to Thailand, where studies into the taxonomy of this group were initiated, and where the generic type can be abundantly found, as well as Gardenia, the genus in which its species were earlier placed. Thailand has been eponymously included in the nomenclature of two other plant genera: Thaia Seidenf. (Orchidaceae) (Seidenfaden, 1975) and Thailentadopsis Kosterm. (Leguminosae) (Kostermans, 1977), both of which continue to be in use (Lewis & Schrire, 2003; Xiang et al., 2012).

Thaigardenia cambodiana (Pit.) K.M.Wong & Chamch., comb. nov.

Thaigardenia collinsiae (Craib) K.M.Wong, Teerawat. & Sungkaew, comb. nov.

Thaigardenia similis (Craib) K.M.Wong & L.Neo, comb. nov.

Incompletely understood taxon: Thaigardenia ‘Nhatrang’ 

Sarawood Sungkaew, Watchara Arthan, Atchara Teerawatananon, Voradol Chamchumroon, Louise Neo and Khoon Meng Wong. 2024. Thaigardenia (Rubiaceae: Gardenieae), A New Genus distributed from Thailand to South China.  Thai Forest Bulletin (Botany). 52(1), 25–43. DOI:10.20531/tfb.2024.52.1.04

[Botany • 2024] Helicteres ubonensis (Malvaceae) • A New Species from Thailand

Helicteres ubonensis Chantar. & Kantachot, 

in Kantachot et Chantaranothai, 2024. 

 DOI: 10.3767/blumea.2024.69.01.02

  

Abstract 

A new species, Helicteres ubonensis from Thailand, is described and illustrated. The new key to 12 species of Thai Helicteres is provided.

Keywords: Helicteroideae; Ubon Ratchathani; identification key; new species

Helicteres ubonensis Chantar. & Kantachot.
a. Leaves and capsules; b. lower surface of leaf with stellate hairs (black dots); c. flower; d. seeds (a, b, d: P. Chantaranothai et al. 2021-150, c: C. Kantachot 2020-32, all KKU).

— Drawing by Puntiwa Krachai, 2023

 Helicteres ubonensis Chantar. & Kantachot.
a. Habitat; b. twigs and leaves; c, d. capsule.

 — Photos: Chortip Kantachot

Helicteres ubonensis Chantar. & Kantachot, sp. nov. 

Typical of this species are narrowly elliptic-oblong leaves. Corolla purplish white or pinkish. Capsule pointed as beak at the apex and surface covering with stellate hairs.

 

Etymology. The specific epithet refers to the collections from Ubon Ratchathani province where the species was discovered. 

Chortip Kantachot and Pranom Chantaranothai. 2024. Helicteres ubonensis (Malvaceae), A New Species from Thailand. Blumea - Biodiversity, Evolution and Biogeography of Plants. DOI: 10.3767/blumea.2024.69.01.02

[Botany • 2022] Madhuca kanchanaburiensis (Sapotaceae) • A New Species from Thailand

  Madhuca kanchanaburiensis Chantar., Kunasit & Kladwong, 

in Chantaranothai, Kunasit & Kladwong, 2022.

มะซางกาญจน์  ||  DOI: 10.11646/phytotaxa.574.2.6

  sc.KKU.ac.th

Abstract

A new species of Madhuca from Thailand, M. kanchanaburiensis is described and illustrated. The species appears most similar to M. malaccensis and M. punctata, but differs in having conspicuous secondary veins toward the leaf margin, woolly filaments and longer corolla. The vernacular name and conservational status of this endemic species are also provided.

Keywords: endemic, Sapotoideae, Kanchanaburi, Eudicots

มะซางกาญจน์ 

Madhuca kanchanaburiensis Chantar., Kunasit & Kladwong

Pranom Chantaranothai, Pongsakorn Kunasit and Pornchai Kladwong. 2022. Madhuca kanchanaburiensis (Sapotaceae), A New Species from Thailand. Phytotaxa. 574(2); 173-178. DOI: 10.11646/phytotaxa.574.2.6

นักวิจัยคณะวิทยาศาสตร์ มข. ค้นพบพืชชนิดใหม่ของโลก

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https://sc.KKU.ac.th/sciweb/4569.html

[Botany • 2022] Microcos bifurcata (Malvaceae: Grewioideae) • A New Species from Thailand and Cambodia

 

Microcos bifurcata Chantar., Kladwong & Kunasit, 

in Chantaranothai, Kladwong & Kunasit, 2022. 

 พลับพลาสองหาง  || li01.tci-thaijo.org/index.php/TNH

Abstract

A new species, Microcos bifurcata, is illustrated and described here. The species is recognized by having a bifid leaf apex which sharply caudate, 3–4 lateral veins per side, the proximal lateral vein appeared slightly below the midpoint of the leaf length and the distal lateral vein on the top is an opposite pair. The morphological characteristics of the new species are compared and discussed with its similar species. The vernacular name, provisional national IUCN conservation assessment and a distribution map of the new species are provided.

Keywords: Chanthaburi, Grewioideae, Khao Soi Dao, Pursat

Microcos bifurcata Chantar., Kladwong & Kunasit:  
A. twig with inflorescence and fruit; B. detail of twig, petiole, adaxial surface of leaf base and inflorescence; C. floral bud surrounded by involucral bracts; D. bracts (D1 outer, D2 inner); E. longitudinal section of floral bud; F. sepal; G. petals (G1abaxial surface, G2 adaxial surface); H. flower with sepals, petals and some anthers removed; I. fruit; J. longitudinal section of fruit.

All from Chantaranothai et al. 2020-140. Drawn by P. Kladwong.

Microcos bifurcata Chantar., Kladwong & Kunasit;
A. young leafy branch; B. abaxial surface of leaves; C. inflorescence. D. adaxial surface of leaves and infructescence.

Photographstaken on 26 Sept. 2020; A−B. by P. Kladwong; C−D. by B. Boonsuk.

Microcos bifurcata Chantar., Kladwong & Kunasit, sp. nov.

Etymology.—The  specific epithet refers to the leaf apex which is split or cleft into two parts.

Vernacular.—Phlap phla song hang (พลับพลาสองหาง). 

Pranom Chantaranothai, Pornchai Kladwong and Pongsakorn Kunasit. 2022. Microcos bifurcata, A New Species of Malvaceae from Thailand and Cambodia. Tropical Natural History. 22(1); 130–135. li01.tci-thaijo.org/index.php/TNH/article/view/257384

[Entomology • 2022] Alainites siamensis • A New Species of Alainites (Ephemeroptera: Baetidae) from Thailand

Alainites siamensis  

Phlai-ngam, Tungpairojwong & Gattolliat, 2022

 

DOI: 10.3897/alpento.6.96284

Abstract

A new species of Baetidae, Alainites siamensis sp. nov., is described from Thailand. This new species is closely related to Alainites lingulatus Tong & Dudgeon, 2000, Alainites laetificus (Kang & Yang, 1994) and Alainites yixiani (Gui & Lu, 1999). Species delimitation based on morphological and molecular (mitochondrial COI sequences) evidence is provided. The discovery of this species confirms the wide distribution of Alainites Waltz & McCafferty, 1994 in Southeast Asia.

Key Words: distribution, diversity, mayflies, Southeast Asia, systematic

Alainites siamensis sp. nov., female larva (middle instar larva) habitus:
 A Dorsal view; B Lateral view; C Ventral view.

Scale bar: 1 mm.

Alainites siamensis sp. nov.

Diagnosis: Alainites siamensis sp. nov. is closely related to A. lingulatus, A. laetificus and A. yixiani; these species are distributed in the Southeast Asia. The new species can be separated from the other species by the following combination of characters: i) the shape of labial palp, ii) the setation on tibia, iii) the number of denticles of the claws, iv) the degree of development and spination of paraproct prolongation, v) the number of spines on distal margin of paraproct, vi) number of pairs of gills (Table 4).

Ecological notes: The larvae of Alainites siamensis sp. nov. mainly live among aquatic plants and roots of riparian plants in slow to moderately flowing streams (Fig. 6). The species seems to be rather widely distributed in the northwestern and northern Thailand, but is rare and not abundant (Fig. 7).

Etymology: The specific epithet of this species, siam (noun), refers to the old name of Thailand and to the known distribution of the species.

The sampling sites and habitats of Alainites siamensis sp. nov. larvae:
A–B Yakruae stream, Nam Nao National Park, Phetchabun Province (type locality);
C–D Stream in Mae Ra Mad District, Tak Province;
E–F Stream near the Mining Dr. Phol Kleepbuathe, Thong Pha Phum District, Kanchanaburi Province.

Sirikamon Phlai-ngam, Nisarat Tungpairojwong and Jean-Luc Gattolliat. 2022. A New Species of Alainites (Ephemeroptera, Baetidae) from Thailand. Alpine Entomology. 6: 133-146.  DOI: 10.3897/alpento.6.96284

[Botany • 2021] Eranthemum decumbens (Acanthaceae) • A New Species from Thailand and Laos

Eranthemum decumbens Kladwong & Chantar., 

in Kladwong & Chantaranothai, 2021. 

 เข็มประกายพฤกษ์ || DOI: 10.1111/njb.03260

th.KKU.ac.th/123064 

 

Abstract

During preparation of a revision of the genus Eranthemum (Acanthaceae), it became evident that nine specimens from eastern and south-eastern floristic regions of Thailand and southern Laos represent a new species which is herein described, illustrated and given the name Eranthemum decumbens. The new species has affinities to E. strictum and E. roseum. A key to the species of Eranthemum occurring in Thailand is provided, together with ecological data, distribution map and conservation status.

Keywords: Eranthemum, Laos, Ruellinae, taxonomy, Thailand

Pornchai Kladwong and Pranom Chantaranothai. 2021. A New Species of Eranthemum L. (Acanthaceae) from Thailand and Laos. Nordic Journal of Botany. DOI: 10.1111/njb.03260

พืชชนิดใหม่ของโลกและพืชที่พบเป็นครั้งแรกของวงศ์เข็ม [Rubiaceae] และวงศ์ฟ้าทะลายโจร [Acanthaceae] ในประเทศไทยและประเทศเพื่อนบ้าน

th.KKU.ac.th/123064 

 เข็มประกายพฤกษ์ (Eranthemum decumbens Kladwong & Chantar.) เป็นพืชในวงศ์ฟ้าทะลายโจร พบที่ จ.สุรินทร์ โดยตัวอย่างหมายเลข Kerr 8249 ซึ่งเก็บในปี ค.ศ. 1924 เป็นตัวอย่างต้นแบบแรก เก็บรักษาไว้ที่พิพิธภัณฑ์พืชกรุงเทพฯ (BK) พืชชนิดนี้มีลักษณะใกล้เคียงกับพืชจากอินเดีย ได้แก่ E. strictum Roxb. และ E. roseum Roemer & Schultes แต่แตกต่างกันที่เข็มประกายพฤกษ์ มีลำต้นทอดนอนไปตามพื้นและชูส่วนปลายขึ้น ใบรูปขอบขนานแกมรูปไข่ โคนใบรูปลิ่มหรือกลม ปลายใบแหลมหรือสอบเรียว ใบประดับย่อยและกลีบเลี้ยง รูปใบหอกแกมรูปไข่  พืชนี้มีการแพร่กระจายพันธุ์ในไทยและลาว

[Botany • 2021] Gynochthodes betongensis (Rubiaceae) • Taxonomic Notes on the Genus Gynochthodes Blume from Thailand

Gynochthodes betongensis Chantar.,

 in Chantaranothai, 2022. 

DOI: 10.11646/phytotaxa.490.3.8 

th.KKU.ac.th/123064 

Abstract

Gynochthodes betongensis, a new species from Thailand, is described and illustrated. Gynochthodes cinnamomoea (syn. Morinda cinnamomea) is placed in the synonymy of G. villosa. Gynochthodes hispida is newly recorded for Thailand. Lectotypes are designated for G. puberula and M. cinnamomea. A key to the Thai species is also presented.

Keywords: Morindeae, lectotypification, new species, synonymy, taxonomy, Eudicots

 ยอย่านเบตง

Gynochthodes betongensis Chantar.,

ยอย่านใบสาก

Gynochthodes hispida (K.M.Wong) Razafim. & B.Bremer 

Pranom Chantaranothai. 2022. Taxonomic Notes on the Genus Gynochthodes Blume (Rubiaceae) from Thailand. Phytotaxa. 490.3; 291–297. DOI:  10.11646/phytotaxa.490.3.8

  

พืชชนิดใหม่ของโลกและพืชที่พบเป็นครั้งแรกของวงศ์เข็ม [Rubiaceae] และวงศ์ฟ้าทะลายโจร [Acanthaceae] ในประเทศไทยและประเทศเพื่อนบ้าน

 th.KKU.ac.th/123064 

 ยอย่านเบตง (Gynochthodes betongensis Chantar.) เป็นพืชในวงศ์เข็ม พบพืชชนิดนี้จากหมู่บ้านจุฬาภรณ์พัฒนา 10 เขตอุทยานแห่งชาติบางลาง อ.เบตง จ.ยะลา  โดยตัวอย่างพืชหมายเลข Pooma et al. 4434 ซึ่งเก็บในปี ค.ศ. 2004 จัดเป็นตัวอย่างต้นแบบแรก (holotype) เก็บรักษาที่หอพรรณไม้ กรมอุทยานแห่งชาติ สัตว์ป่า และพันธุ์พืช (BKF) และตัวอย่างคู่ตัวอย่างต้นแบบ (isotype) เก็บไว้ที่พิพิธภัณฑ์พืชมหาวิทยาลัยออร์ฮูส เดนมาร์ก (AAU) และพิพิธภัณฑ์พืชสวนพฤกษศาสตร์เอดินเบอเรอ สก๊อตแลนด์ (E) ยอย่านเบตงมีสัณฐานวิทยาคล้ายกับยอเลื้อยขน (G. cochinchinensis (DC.) Razafim. & B. Bremer) และยอย่าน (G. umbellata (L.) Razafim. & B. Bremer) โดยมีดอกเกิดรวมกันเป็นช่อกระจุกและช่อเหล่านี้เรียงตัวคล้ายช่อซี่ร่ม เกิดที่ปลายกิ่ง แต่ยอย่านเบตงนี้ต่างจากพืชทั้งสอง เนื่องจากมีโคนใบรูปหัวใจ และก้านยาว 10–15 มม. โดยพืชอีกสองชนิดนั้นมีโคนใบรูปลิ่มหรือค่อนข้างเบี้ยว  และมีก้านใบยาว 3–10 มม. นอกจากนี้ยอย่านเบตงมีเส้นแขนงใบ 12–14 คู่ ขณะที่ยอเลื้อยขนมี 7–12 คู่ และยอย่านมี 6–8 คู่

พบพืชเป็นครั้งแรกในประเทศไทย (new record)

(ยอย่านใบสาก) Gynochthodes hispida (K.M.Wong) Razafim. & B.Bremer 

[Botany • 2020] Argostemma lamxayanum, A. lobbioides, A. vientianense, et al. • Six New Species of Argostemma Wall. (Rubiaceae) from Laos

 Argostemma vientianense Lanors. & Chantar.,

Argostemma longisepalum Lanors. & Chantar.,  

Argostemma svengsuksae Lanors., Chantar. & Souvann. & 

Argostemma lamxayanum Lanors. & Chantar.

in Lanorsavanh, Chantaranothai & Souvannakhoummane, 2020.

ສະກຸນດາວຫີນ  DOI: 10.1111/njb.02714 

phakhaolao.la 

  KKU.ac.th 

 facebook.com/SoulivanhLanorsavanh

Abstract

Argostemma Wall. is a large genus of herbaceous plants in the tribe Argostemmateae (Rubiaceae–Rubioideae), mainly distributed in Southeast Asia and its taxonomy is far from completely known. Eight species of Argostemma were previously reported from Laos, but we here add six more species (Argostemma lamxayanum, A. lobbioides, A. longisepalum, A. paksongense, A. svengsuksae and A. vientianense) which are all new to science. The new species were found in limestone habitats in southern and central Laos. Detailed descriptions, illustrations, photographs and a key to all the known species in Laos are provided.

Argostemma lamxayanum sp. nov.
(A) habitat and habit, (B) habit, (C) inflorescence 

Photos by S. Lanorsavanh.

Argostemma lamxayanum Lanors. & Chantar., sp. nov.

Etymology: The specific epithet is to honor Associate Prof. Vichith Lamxay, Dept of Biology, Faculty of Natural Science, National Univ. of Laos, who encouraged the first author to intensively study the Lao Flora.

Argostemma lobbioides Lanors., Chantar. & Souvann., sp. nov.

Etymology: The specific epithet lobbioides refers to its morphological similarity to A. lobbii.

Argostemma longisepalum Lanors. & Chantar., sp. nov.

Etymology: The specific epithet refers to the long sepal.

Argostemma paksongense Lanors. & Chantar., sp. nov. 

Etymology: The specific epithet refers to the Paksong district where the species grows.

Argostemma svengsuksae Lanors., Chantar. & Souvann., sp. nov.

Etymology: The taxon is named after emeritus Associate Prof. Bouakhaykhone Svengsuksa, Dept of Biology, Faculty of Natural Science, National Univ. of Laos, who directed the first author to study the flowering plants for the Lao Flora.

Argostemma vientianense Lanors. & Chantar., sp. nov.

Etymology: The specific epithet refers to the Vientiane province, the collection locality.

 

Soulivanh Lanorsavanh, Pranom Chantaranothai and Keooudone Souvannakhoummane. 2020. Six New Species of Argostemma Wall. (Rubiaceae) from Laos. Nordic Journal of Botany. 38(10); DOI: 10.1111/njb.02714

 phakhaolao.la/en/news/six-new-species-argostemma-wall-rubiaceae-laos

 facebook.com/Phakhaolaoplatform/posts/658489141536663

 twitter.com/NordicJBotany/status/1330526766356697088

 facebook.com/SoulivanhLanorsavanh/posts/3281680675220686

           

 ພົບ 6 ພືດຊະນິດໃໝ່ໃນປະເທດລາວ ຕະກຸນດອກເຂັມ ສະກຸນດາວຫີນ Argostemma Wall. (Rubiaceae) 

✨ ຕີພິມລ່າສຸດໃນ Nordic Journal of Botany ວັນທີ 13/10/2020 

ຊົມເຊີຍ Soulivanh Lanorsavanh ນັກຄົ້ນຄວ້າຄະນະວິທະຍາສາດທຳມະຊາດ ມະຫາວິທະຍາໄລແຫ່ງຊາດລາວ,  Keooudonia Souvanakhoummanianum ຜູ້ຈັດການຂໍ້ມູນພາເຂົ້າລາວ/ນັກຄົ້ນຄວ້າກ່ຽວກັບພືດສາດ ,​ ແລະ  Pranom Chantaranothai ນັກຄົ້ນຄວ້າ ຄະນະວິທະຍາສາດທຳມະຊາດ ມະຫາວິທະຍາໄລຂອນແກ່ນ ປະເທດໄທ

พบพืชชนิดใหม่ของโลก อีก 6 ชนิด! โดยนักวิจัยคณะวิทย์ฯ มข. ร่วมกับอาจารย์ ม.แห่งชาติลาว และสถาบันวิจัยการเกษตรและป่าไม้แห่งชาติลาว

th.kku.ac.th/40906/