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Thottea adichilthottiana Sunil and Naveen, sp. nov. (A) Habit. (B) Flower bud. (C) Single flower. (D) Perianth. (E) Gynostemium. (F) Stamen. (G) Capsule. (H) Seed.
Source publication
A new species of Thottea Rottb. (Aristolochiaceae) from Ernakulam District, Kerala, India, Thottea adichilthottiana Sunil and Naveen Kumar, is described and illustrated. The species is most similar to Thottea siliquosa (Lam.) Ding Hou, but differs from it in having a smaller habit with obovate or broadly elliptic–oblong leaves, depressed globose fl...
Contexts in source publication
Context 1
... elevation c.758 m, 10 April 2013, Sunil and Naveen Kumar 6481 (holo CAL; iso MH). (Figures 1 and 2). ...
Citations
... It is unique among Thottea in having the 33-lobed style. Literature reviews (Hou, 1981(Hou, , 1984Phuphathanaphong, 1985;Kumar et al., 2000;Huang et al., 2003;Murugan, 2011;Yao, 2013Yao, , 2015Sunil and Kumar, 2014;Mustaqim and Putra, 2020;Le et al., 2021) and examination of the types of other species as well as other specimens in various herbaria either directly or as images from ANDA, BO, FIPIA, and L (abbreviation follow Thiers, 2022), we concluded that the specimen belongs to a species new to science, and here we described it below. This finding increases the number of Thottea in Sumatra to 11. ...
A species new to science, Thottea beungongtanoeh Mustaqim (Aristolochiaceae), is described based on a specimen collected from a lowland mixed dipterocarp forest in the eastern part of Aceh Province, the northernmost province in Sumatra. This species differs from all previously described species in having 33-lobed style, the highest count for the genus. Morphological description, distribution, phenology, comparison with the similar species, and the photographs of the living plants are provided.
... celebica, T. paucifida and T. tomentosa) are endemic to the Andaman and Nicobar islands and one (T. siliquosa) is distributed in the peninsular India and Sri Lanka (7)(8)(9)(10)(11). A large number of taxonomically significant studies were conducted on different species of Thottea in India. ...
... Bifurcate stylar lobes are a rare occurrence in the genus Thottea (7,9,11) and these bifurcations in later stages of development may make the numbers fluctuating. In the present study, trifurcate stylar lobes were also noticed. ...
Gynostemium is a putative floral structure formed by the fusion of the male and female reproductive parts (stamens and carpels) through a process during its development called synorganization. Most of the Indian species of Thottea Rottb. have a prominent gynostemium in their floral architecture, with varying degrees of adnation and complexity. Even though the gynostemium is a significant taxonomic marker for the inter-specific systematics in Thottea, the scepticism and arguments on deciphering its morphology and functional parameters, including the existence of staminodes, makes it imperative to be examined in detail. The present study is the first attempt in this line which aims to explore the morphological characters of gynostemium and reproductive biology of Thottea duchartrei Sivar., A.Babu and Balach., an endemic species in the Western Ghats. Stereo zoom microscopy, SEM and reproductive biological studies were conducted providing special emphasis to the gynostemium. Detailed analysis revealed the structural and functional diversity of gynostemium with regard to its components. The study also helped to recognize the columnar outgrowths on the gynostemium as staminodes. In total, the present study helps to solve the confusions regarding the functional identity of the gynostemium T. duchartrei with regard to its morphology.
... During an ethnobotanical study of medicinal plants led by the first to forth authors in the mountainous areas of A Roang commune, A Luoi district, Thua Thien Hue province in central Vietnam (Fig. 1), a specimen of an unknown species of Thottea was collected. After a careful examination referring to taxonomic literature (Hou 1981, Sivarajan 1985, Phuphathanaphong 1987, Hô 1999, Kumar et al. 2000, Huang et al. 2003, Huyen 2005, Phan et al. 2009, Murugan 2011, Yao 2013, 2015, Sunil & Vannaratta 2014, Mustaqim & Putra 2020 Thottea aroangensis is characterized by subshrub habit 70-90 cm tall, inflorescence at base of stem close to ground level, campanulate perianth ca. 2.6 cm long, inside of perianth tube with creamy white patches, obscure perianth lobes very broadly triangular ca. ...
Thottea aroangensis T.A. Le, D. Dien & Tagane (Aristolochiaceae) is described based on the specimen collected from the A Roang commune, A Luoi district, Thua Thien Hue province, central Vietnam. This species is characterized by subshrub habit 70-90 cm tall, inflorescence at base of stem close to ground level, campanulate and obscurely lobed perianth ca. 2.6 cm long, inside of perianth tube with creamy white patches, and 20 stamens in 2 whorls, by which combination it is clearly distinguished from the other species of Thottea in Vietnam and its surrounding countries. Morphological descriptions, photographs, a distribution map, vernacular name, and preliminary conservation status are provided for T. aroangensis.
