<p><strong><em>Heterostemma barikiana</em> (Apocyanceae, Asclepiadoideae), a new species from India, Myanmar and Thailand</strong></p>

Abstract

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.

Heterostemma cucphuongense (Apocynaceae, Asclepiadoideae), a new species from Vietnam

“…While conducting fieldwork in Cuc Phuong National Park, Nho Quan district, Ninh Binh Province in Vietnam, an unidentified species of Heterostemma was collected. From the relevant literature (Costantin 1912;Swarupanandan et al 1989;Ho 1993;Li et al 1995;Tran 2005Tran , 2017Tran and Kim 2010;Thaithong et al 2018;Agnihotri et al 2019;Kidyoo 2019;Thammarong et al 2019), as well as an examination of specimens in the herbaria BK, BKF, BM, HN, HNU, HNPM, IBK, IBSC, K, KUN, KYO, P, SING, TI, TO, TUT and VNM (acronyms according to Thiers 2020), we have confirmed that it is a new species. Here, we describe and illustrate this new species as H. cucphuongense T.B.…”

Heterostemma menghaiense (Apocynaceae), a new record for Laos and Thailand

“…(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). In neighbouring Laos, four species of Heterostemma were previously recorded (Newman et al, 2007;Jin et al, 2016;Thammarong et al, 2019;Thammarong et al, 2020).…”

Heterostemma brownii (Apocynaceae), a new record for Laos and Thailand

“…Six species were recognized in the most recent full treatment of the genus for Thailand (Thaithong et al, 2018). In 2019, three new species were described from Thailand, namely Heterostemma ficoides A.Kidyoo (Kidyoo, 2019), H. barikiana P. Agnihotri et al (Agnihotri et al, 2019) and Heterostemma trilobatum A. Kidyoo & Thaithong (Kidyoo & Thaithong, 2019).…”