Lasianthus perakensis King & Gamble (1904:126)

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 : 24

43. Lasianthus perakensis King & Gamble (1904:126) . Type (lectotype designated by Wong 1989):― MALAYSIA. Perak, May 1892, L. Wray 4128 (lectotype SING0059232 image!; isolectotype U0040469 image!). ( Figure 3U, 3V & 3W ).

T hailand: —PENINSULAR. Nakhon Si Thammarat: Khao Luang National Park, 23 August 1995, K. Larsen, S. S. Larsen, C. Tange, R. Moran, T. Niyomdham & P. Puudjaa 45889 (AAU, BKF, PSU). Yala: Betong, 1 February 2015, M. Poopath, V. Chamchumroon, J. Wai, K. Khammongkol & S. Jirakorn 875 (BKF).

Distribution: — Malaysia (Peninsular, Sabah), Indonesia (Sumatra, Kalimantan), Thailand (Peninsular).

Ecology: —Moist evergreen forest in shaded places at an elevation of 100‒ 600 m. Flowering in August‒October and fuiting in November‒February.

Notes: ― Lasianthus perakensis is different from other species of Lasianthus by having 10 pyrenes in all drupes which is easily observed in the fruiting state when dried.

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.