Lasianthus ellipticus Wight (1846:507)

Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, Phytotaxa 439 (1), pp. 1-38 : 14-15

17. Lasianthus ellipticus Wight (1846:507) . Type: ― MALAYSIA. Malacca, (no date), W. Griffith s.n. (holotype

K000763923!). ( Figure 3I ).

= Lasianthus scalaris Craib (1933:26) . Type : ― THAILAND. Phuket, 1 April 1930, A. F. G. Kerr 18809 (holotype K000777030!; isotype K000777029).

= Lasianthus sordidus Ridley (1911:60) . Type: ― MALAYSIA. Temengo, July 1907, H. N. Ridley 14488 (isotype BM001190973 image!).

Thailand: —PENINSULAR. Nakhon Si Thammarat: Khao Luang National Park, Karom waterfall, 30 October 1933, K. Larsen et al. 44161 (AAU, BKF, PSU). Trang: Khao Chong Botanical Gardens, 27 June 2016, S. Duangjai 2019SU ( BKF), Khao Pup pa, 11 March 1974, K. Larsen & S. S. Larsen 33176 (AAU, BKF, K, L). Yala: Than To, Mae Wad, 6 August 2016, M. Poopath et al. 1679 ( BKF), 25 October 2016, M. Poopath 1769 ( BKF). Narathiwat: Chatwarin waterfall, 15 August 1995, K. Larsen et al. 45620 (AAU, BKF, L, PSU, QBG), Bala-Hala, 10 February 1996, C. Niyomdham 4571 (AAU, BKF).

Distribution: — Malaysia (Peninsular, Borneo), Indonesia (Sumatra, Java), Thailand (Peninsular).

Ecology: —Moist evergreen forest, in shaded places at an elevation of 100‒ 400 m. Flowering in April‒May and fruiting in July‒September.

Notes: ―In Thailand, this species occurs only in the Peninsular region. It can easily be recognized by its inflorescence bracts which are conspicuous and densely long-hirsute.

Figures

FIGURE 3A‒O. Lasianthus werefound in Thai naturalforests:A) L. appressus;B) &C) L.attenuatus;D) L.chinensis;E) L.chrysoneurus; F) L. constrictus; G) L. cyanocarpus; H) L. ellipsoideus; I) L. ellipticus; J) L. fordii; K) L. foxworthyanus; L) & M) L. hirsutus; N) L. hispidulus and O) L. inodorus.