FIGURE 1 - uploaded by Michele Rodda
Content may be subject to copyright.
![Photograph of possible isolectotype of Heterostemma tanjorense from Wight's personal working herbarium (K). The sheet bears an Herb. R. Wight propr. label in the lower right corner, is pencilled [Wight cat. n.] 1527 in the lower left corner and has extensive notes about the taxon in Wight's hand. A pencilled note by C.B. Clarke reads 'found in Wight's bundle of Heterostemma'. Reproduced with the consent of the Royal Botanic Gardens, Kew.](profile/Michele-Rodda/publication/303559264/figure/fig3/AS:667842458431499@1536237458158/Photograph-of-possible-isolectotype-of-Heterostemma-tanjorense-from-Wights-personal.jpg)
Photograph of possible isolectotype of Heterostemma tanjorense from Wight's personal working herbarium (K). The sheet bears an Herb. R. Wight propr. label in the lower right corner, is pencilled [Wight cat. n.] 1527 in the lower left corner and has extensive notes about the taxon in Wight's hand. A pencilled note by C.B. Clarke reads 'found in Wight's bundle of Heterostemma'. Reproduced with the consent of the Royal Botanic Gardens, Kew.
Source publication
All names in Heterostemma and their known synonyms are listed. Lectotypes are designated for 33 names and a neotype is designated for Stapelia quadrangula. Dittoceras is synonymised with Heterostemma and three new combinations are validated.
Citations
... A checklist of the genus was published by Rodda (2016); among neighbouring countries a recent revision is available for Thailand (Thaithong et al., 2018). ...
Heterostemma saolaense, a new species from Vietnam is described, illustrated and compared with the similar species
Heterostemma maculatum. The two species differ in stem pubescence, peduncle, calyx and corolla size.
... (Apocynaceae) with 30-40 species globally (Rodda, 2016) is distributed in India, Sri Lanka, Nepal, Bangladesh, China, Myanmar, Thailand, Laos, Vietnam, the Malesian region and Australia (Swarupanandan et al., 1989;Forster, 1992). In Thailand, nine species are recorded (Thaithong et al., 2018;Kidyoo, 2019;Agnihotri et al., 2019;Kidyoo & Thaithong, 2019;Thammarong et al., 2020). ...
... 16(1): 27, f. 2. 1994. Type: China, Yunnan, Xishuangbanna, Menghai, Mengsong, 1,000 m, 6 May 1989, H. Zhu & H. Wang 2443 (lectotype: HITBC [HITBC62875]; isolectotypes HITBC [HITBC62876, HITBC62877, HITBC62878], designated byRodda, 2016).Fig. 1. ...
Heterostemma menghaiense is reported as a new record for the flora of Laos and Thailand. A description based on Thai and Lao collections, photographs and notes are provided.
... The genus Heterostemma Wight (Apocynaceae) includes 30-40 species (Rodda, 2016) distributed in Nepal, China, India, Bangladesh, continental Southeast Asia, throughout Malesia to Australia, Solomon Islands and New Caledonia (Swarupanandan et al., 1989;Forster, 1992). Six species were recognized in the most recent full treatment of the genus for Thailand (Thaithong et al., 2018). ...
... Therefore, there is currently no evidence to justify the separation of a new taxon based on stem pubescence and the ratio of corona lobe and tube length. Rodda (2016) Fig. 1. Climber. ...
Heterostemma brownii is reported as a new record for the floras of Laos and Thailand. A lectotype is also designated for the name H. brownii. A description based on Thai and Laos collections, photographs and notes are provided.
... (lectotype) and H. montanum Schltr. (lectotype) were designated by Rodda (2016). The only taxon from New Guinea whose type has not been traced is H. membranifolium (Lauterb. ...
The new species, Heterostemma carnosum is described, illustrated and compared with the similar species Heterostemma dalzellii. The two species differ in peduncle, pedicel and corolla size as well as in leaf shape.
... However, this third species is indistinguishable from H. barikiana. Furthermore, the specimen C. Maknoi & P. Srisanga 2258 (QBG) Costantin 1912;Ho 1993;Li et al. 1995;Tran 2005;Rodda 2016), as well as a recent revision (Tran 2017 [in Vietnamese]), where seven species have been recorded for the country. ...
Heterostemma cucphuongense (Apocynaceae, Asclepiadoideae), a new species from Vietnam is described, illustrated and compared with the similar species Heterostemma succosum Kerr. Heterostemma cucphuongense differs from H. succosum by the morphology of the rachis of the inflorescence, the margins of the corolla lobes and the colour of the adaxial surface of the corolla.
... Species of Heterostemma Wight & Arnott (1834: 42) are terrestrial woody vines producing extra-axillary simple or few-branched racemes with flowers displaying distinct staminal coronas often with a horn-like appendage (Bentham 1876, Hooker 1883, Swarupanandan et al. 1989, Jagtap & Singh 1999, Rodda 2016. The genus is known to comprise 30 to 40 species distributed in Australia, Bangladesh, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam, and Western Pacific Islands (Swarupanandan et al. 1989, Forster 1992. ...
A new species of Heterostemma, H. barikiana, is described and illustrated. The new species is similar to Heterostemma xuansonense in the absent or very reduced peduncle and in the presence of a pubescent staminal corona.
... and Dittoceras Hook. f. (Boerlage 1899, Swarupanandan et al. 1989, Meve and Liede 2002, 2004, Endress et al. 2014, Rodda 2016. In this broad sense, Heterostemma comprises 30−40 species widely distributed from the western Pacific Islands, Australia, New Guinea, Philippines, Indonesia, Malaysia, through Thailand, Vietnam, Laos, Myanmar, Taiwan, China, Nepal, Sri Lanka to India (Swarupanandan et al. 1989, Forster 1992). ...
... In this broad sense, Heterostemma comprises 30−40 species widely distributed from the western Pacific Islands, Australia, New Guinea, Philippines, Indonesia, Malaysia, through Thailand, Vietnam, Laos, Myanmar, Taiwan, China, Nepal, Sri Lanka to India (Swarupanandan et al. 1989, Forster 1992). The genus is mainly characterized by twining stems, chartaceous to somewhat fleshy leaves, extra-axillary cymes, rotate to globose corollas, a staminal corona with five spreading lobes that are united at the base, an inner appendage sometimes present, upright subovoid to subquadrate pollinia with germination crest on the inner side, and slender to subcylindric follicles (Swarupanandan et al. 1989, Rodda 2016, Thaithong et al. 2018, Kidyoo 2019. Based on flower form, two sections of the genus are recognized (Swarupanandan et al. 1989 (Kidyoo 2019), is a member of the section Oianthus. ...
A new species, Heterostemma trilobatum A. Kidyoo & Thaithong was discovered in northern, northeastern and southeastern Thailand. It is here described, illustrated and meticulously compared with a morphologically similar species, H. xuansonense T. B. Tran & J. Hw. Kim. Both species resemble each other, having sessile to subsessile cymes, five glands on the inside of the calyx and dark red to purplish red ovate corona lobes. However, they are markedly differed by the size of flowers and the presence of corona appendages. This article is protected by copyright. All rights reserved.
... The genus Heterostemma Wight, with 30-40 species worldwide (Rodda, 2016), belongs to the family Apocynaceae. This genus is mainly distributed from Nepal, China, India, Sri Lanka, Bangladesh, Myanmar, Thailand, Laos, Vietnam, throughout the Malesian region, and Australia (Swarupanandan et al., 1989;Forster, 1992;Li et al., 1995). ...
Systematics of Lecythidaceae in Southeast Asia and some flowering plants in Laos
... (Ceropegieae, Asclepiadoideae, Apocynaceae) was first described by Wight & Arnott (1834). The genus and its close relatives have been the subject of many taxonomic studies (Hooker 1883;Costantin 1912;Backer & Bakhuizen van den Brink 1965;Swarupanandan et al. 1989;Forster 1992;Gilbert et al. 1995;Jagtap & Singh 1999;Rodda 2016;Thaithong et al. 2018) and new species have occasionally been reported (Lin et al. 2010;Tran & Kim 2010). Three previously accepted genera, i.e. ...
... Symphysicarpus Hassk., Oianthus Benth. and Dittoceras Hook.f. were subsumed into Heterostemma (Boerlage 1899;Swarupanandan et al. 1989;Meve & Liede 2002, 2004Endress et al. 2014;Rodda 2016). Heterostemma as recently circumscribed is diagnosed by a twining habit, chartaceous to slightly fleshy leaves, extra-axillary umbelliform cymes, rotate to globose corolla, staminal corona of five flat, radiating basally connate lobes, each with or without an inner appendage, erect subovoid to subquadrate pollinium with a germination crest on the inner side, and paired or single slender to subcylindric follicles (Swarupanandan et al. 1989;Rodda 2016;Thaithong et al. 2018). ...
... and Dittoceras Hook.f. were subsumed into Heterostemma (Boerlage 1899;Swarupanandan et al. 1989;Meve & Liede 2002, 2004Endress et al. 2014;Rodda 2016). Heterostemma as recently circumscribed is diagnosed by a twining habit, chartaceous to slightly fleshy leaves, extra-axillary umbelliform cymes, rotate to globose corolla, staminal corona of five flat, radiating basally connate lobes, each with or without an inner appendage, erect subovoid to subquadrate pollinium with a germination crest on the inner side, and paired or single slender to subcylindric follicles (Swarupanandan et al. 1989;Rodda 2016;Thaithong et al. 2018). ...
Heterostemma ficoides A.Kidyoo, a new species of Heterostemma sect. Oianthus with a fig-like flower discovered in northern Thailand is here described. Photographs, line illustrations and detailed comparison with the similar species, H. vasudevanii Swarupan. & Mangaly are provided. Heterostemma ficoides resembles H. vasudevanii in having a fleshy globose flower and the presence of the inner corona appendages, but clearly differs in leaf shape, leaf venation, presence of dense hairs on the outer and inner surfaces of the corolla, and apex of the staminal corona lobes. An identification key to the species of sect. Oianthus is presented.
... Liede (2001) concluded that Cynanchum and Vincetoxicum are unrelated, a result confirmed by all subsequent studies (e.g., Rapini et al. 2007, Fishbein et al. 2018. In contrast, Liede-Schumann et al. (2012, 2016 showed that Vincetoxicum and Tylophora are closely intermingled, with Vincetoxicum forming two major and several minor temperate clades nested in a tropical "Tylophora". In addition, the smaller genera considered to form the subtribe Tylophorinae (sensu Liede 2001) are all nested inside this large Tylophora-Vincetoxicum clade with the exception of Pentatropis R.Br. ...
All 301 names in Tylophora and the small genera in Asclepiadeae-Tylophorinae now considered synonymous with Vincetoxicum, namely Amblyoglossum, Belostemma, Biondia, Blyttia, Diplostigma, Goydera, Hoyopsis, Hybanthera, Iphisia, Ischnostemma, Merrillanthus, Microstephanus, Nanostelma, Neohenrya, Oncostemma, Pentabothra, Pentastelma, Pleurostelma, Podostelma, Pycnostelma, Rhyncharrhena, Sphaerocodon, Spirella, Tylophoropsis and Vincetoxicopsis, are listed. A total of 107 new combinations are made (104 in Vincetoxicum, one in Dregea, one in Marsdenia, and one in Lygisma), 25 nomina nova have been coined, 141 typifications are undertaken and 10 new synonyms are proposed.
