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Thursday, September 15th, 2022
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| 4:25a | [Botany • 2022] Aristolochia rethyae (Aristolochiaceae) • A New Species from Arunachal Pradesh, north-east India
Abstract Aristolochia rethyae, a new species from Arunachal Pradesh, north-east India, is described. Aristolochia rethyae is affinis to A. griffithii and A. tanzawana with similar leaf texture and shallowly 3-lobed perianth limb, but differs from A. griffithii in its ovate to narrowly ovate leaf shape, cauliflorous flower borne in a cluster and densely hirsute brown capsule, and from A. tanzawana in their cauliflorous inflorescence, S-shaped perianth and capsule size with distinct wavy ridges. Keywords: Arunachal Pradesh, Critically Endangered, India, new taxon, Siphisia, Magnoliids
Aristolochia rethyae S. Kashung, Rimi Barman et P. R. Gajurel, sp. nov. Aristolochia rethyae is morphologically close to A. griffithii and A. tanzawana (Kigawa) Watan.-Toma & OhiToma (2014:160) in its leaf texture which is densely pubescent abaxially, and the perianth limb being shallowly 3- lobed. However, it can be distinguished very easily from A. griffithii in its ovate to narrowly ovate leaves, cauliflorous inflorescence, pubescent perianth and capsule texture. It is also distinctly different from A. tanzawana in its cauliflorous inflorescence, S-shaped perianth and much larger capsule with distinct wavy ridges. Etymology:— The specific epithet honors Dr. Parakkal Rethy, former Professor of Department of Forestry, North Eastern Regional Institute of Science and Technology, Arunachal Pradesh, India, for her contribution to the field of Angiosperm taxonomy.   Soyala Kashung, Padma Raj Gajurel, Binay Singh, Rimi Barman and Tage Yakang. 2022. Aristolochia rethyae, A New Species from Arunachal Pradesh, north-east India. Phytotaxa. 564(1); 1-7. DOI: 10.11646/phytotaxa.564.1.1   | ||||||
| 9:30a | [Botany • 2022] Hodgsonia tsaii (Cucurbitaceae) • A New Species from Xizang, China
Abstract Hodgsonia tsaii (Cucurbitaceae), a new species from Motuo, Xizang, China, is described. It is compared with H. macrocarpa and H. heteroclita, and differs from the two species by the entire or 3-lobed leaf, bigger and longer calyx lobes, 5-carpellate and 10-ovuled ovary, 5-lobed stigma, pepo with 20 deep grooves which are separated by 10 tall and 10 dwarf ribs. A comprehensive morphological description of H. tsaii, together with photographs, a conservation assessment, and a diagnostic key to 3 Hodgsonia species from Asia are provided. Distribution information of Hodgsonia is updated, and all the three species occur in China. Keyword: China, Cucurbitaceae, Hodgsonia macrocarpa, H. heteroclita, Hse-Tao Tsai, new species, Xi-Tao Cai, Xizang  
   Hodgsonia tsaii J.Y.Shen, X.D.Ma, W.G.Wang & B.Pan bis, sp. nov. 蔡氏油瓜 Type: CHINA. Xizang, Motuo County, Beibeng town, along roadside, at the edge of forest, climbing on the trees, 95°11′02.01″E, 29°14′17.53″N, alt. 1415 m, 5 June 2022, J. Y. Shen, W. G. Wang & X. D. Ma 2701 (holotype: HITBC; isotype: HITBC, HIB). Diagnosis: Hodgsonia tsaii can be distinguished from its congeners, H. macrocarpa and H. heteroclita, by several morphological features (Figs.1 & S1, Table 1), H. tsaii has 10–20 mm long calyx lobes (vs. 2–4 mm long calyx lobes in H. macrocarpa and H. heteroclita), pericarp with 20 grooves, separated by 10 tall ribs and 10 dwarf ribs (vs. smooth in H. macrocarpa and shallowly 10–12 grooved in H. heteroclita), ovary with 5 carpels (vs. 3 carpels in H. macrocarpa and H. heteroclita) and 10 separate ovules (vs. 12 ovules, parietal with pairs of ovules attached on each side of carpel in H. macrocarpaand H. heteroclita), and 5-lobed stigma (vs. 3-lobed stigma in H. macrocarpa and H. heteroclita). Etymology: The epithet is in honor of Prof. Xi-Tao Cai (or Hse-Tao Tsai (蔡希陶), 1911–1981), who founded Xishuangbanna Tropical Botanical Garden in 1950s, and carried out botanical research of Hodgsonia in early 1960s.  Jian-Yong Shen, Xing-Da Ma, Wen-Guang Wang and Bo Pan. 2022. Hodgsonia tsaii (Cucurbitaceae), A New Species from Xizang, China. Taiwania. 67(4); 465-468. taiwania.ntu.edu.tw/abstract/1864   | ||||||
| 9:48a | [Botany • 2022] Oreocharis tianlinensis (Gesneriaceae) • A New Species from the Limestone Area in northwestern Guangxi, China 
Abstract The new species Oreocharis tianlinensis R.C. Hu, W.B. Xu & Y.Feng Huang is described and illustrated in this paper. It is morphologically similar to Oreocharis aimodisca Lei Cai, Z.L. Dao & F. Wen in leaves elliptic to ovate, calyx 5-parted to the base, corolla yellow, tube robustly tubular, gradually expanded from base to the throat, but differs in blade margin and abaxial main vein and lateral veins, petiole, and calyx densely rust-brown villosus outside; inflorescence 1 (or 2)-flowered, bracts 3; calyx lobes equal, margin entire; stamens 4, didynamous; capsule cylindrical, 3–3.5 cm long, glabrous. Also, O. tianlinensis is morphologically similar to O. longifolia (Craib) Mich.Möller & A.Weber, O. aurantiaca Burtt and O. muscicola (Diels) Mich.Möller & A.Weber in the appearance and color of its flowers, but differs in leaf-blade broadly ovate, base shallow heart, margin crenate; inflorescence 1 (or 2)-flowered, bracts 3; filaments and pistil sparsely glandular puberulent; anthers oblong, separated. KEY WORDS: Limestone flora, new species, Oreocharis aimodisca, O. longifolia, O. aurantiaca, O. muscicola, taxonomy.
Oreocharis tianlinensis R.C.Hu, W.B.Xu & Y.Feng Huang, sp. nov. 田林馬鈴苣苔 Diagnosis: Oreocharis tianlinensis is similar to O. aimodisca, but differs in blade margin and abaxial main vein and lateral veins, petiole, and calyx densely rustbrown villosus outside; inflorescence 1 (or 2)-flowered, bracts 3; calyx lobes equal, margin entire; stamens 4, didynamous; capsule glabrous. Etymology: The specific epithet is derived from the type locality, Tianlin County, Guangxi, China. Ren-Chuan Hu, Qi-Min Hu, Ying Qin, Wei-Bin Xu and Yun-Feng Huang. 2022. Oreocharis tianlinensis, A New Species of Gesneriaceae from the Limestone Area in northwestern Guangxi, China. Taiwania. 67(4); 479-483. DOI: 10.6165/tai.2022.67.479  |
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