Lasianthus appressus Hooker (1880:181)

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 : 7-9

1. Lasianthus appressus Hooker (1880:181) . Type: (lectotype designated by Zhu 2012):― MALAYSIA. Peninsular Malaysia, without locality, W. Griffith 2927 (lectotype K000763936!). ( Figure 3A ).

Thailand:―PENINSULAR. Nakhon Si Thammarat: Khao Luang National Park, 23 June 1970, T. Shimizu & A. Nalampoon T8220 (BKF, K), 5 October 1986, P. Sirirugsa PS1034 (BKF, PSU), 24 October 1993, K. Larsen et al. 43946 (AAU, BKF, K, PSU), 27 February 2006, S. Gardner & P. Sidisunthorn ST2386 (BKF, K). Phatthalung: Khao Bantad Wildlife Sanctuary, 24 October 1993, K. Larsen et al. 43946 (AAU, BKF, PSU). Satun: Thale Ban National Park, 13 September 1990, C. Puff & V. Urchirakal 900913-1/6 (BKF, WU), 4 November 1990, K. Larsen et al. 41108 (AAU, BKF, PSU). Songkhla: Tone Nga Chang Wildlife Sanctuary, 25 September 1997, Puangpen N047 ( QBG).

Distribution: ―Peninsular Malaysia, Thailand (Peninsular), Singapore.

Ecology: ―Moist evergreen forest, in shaded places on sandy-loam at an elevation of 50– 900 m. Flowering in August and fruiting in September.

Notes: ― Lasianthus appressus is distinct from other species of the genus in having relatively small leaves, branches appressed-hirsute, and drupes with eight pyrenes. These can be easily observed when dry, both in the field and on herbarium specimens.

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.