Abstract
A revision of all species of the genus Litsea Lam. (Lauraceae) occurring in Peninsular Malaysia and Singapore is presented along with a summary of taxonomic history, notable features of morphology, and a key to species. A description, distribution map, and a proposed conservation assessment is presented for each species, together with notes on ecology and ethnobotany. Through this revision, 37 distinct species are recognised. Forty-three names are lectotypified (Cylicodaphne myristicifolia (Wall. ex Nees) Meisn. var. acutata Meisn., Lepidadenia magnifica Miq., Litsea accedens (Blume) Boerl., L. acrantha Ridl., L. amara Blume, L. angulata Blume, L. artocarpifolia Gamble, L. brachystachya (Blume) Boerl., L. brideliifolia Hayata, L. cinerascens Ridl., L. costalis (Nees) Kosterm., L. curtisii Gamble, L. elliptica Blume, L. erectinervia Kosterm., L. fenestrata Gamble, L. ferruginea (Blume) Blume, L. glabrifolia Ridl., L. glutinosa (Lour.) C.B.Rob., L. helferi Hook.f. var. ovata Gamble, L. hirsutissima Gamble var. geniculata Gamble, L. kunstleri Gamble, L. lancifolia (Roxb. ex Nees) Fern.-Vill. var. rufa Ridl., L. machilifolia Gamble var. montana Ridl., L. magnifica (Miq.) Fern.-Vill. var. pahangensis Ridl., L. maingayi Hook.f., L. monopetala (Roxb.) Pers., L. noronhae Blume, L. noronhae Blume var. hexandra Gamble, L. patellaris Gamble, L. penangiana Hook.f., L. petiolata Hook.f., L. quercina Gamble, L. robusta Blume, L. scortechinii Gamble, L. sessiliflora Hook.f., L. spathacea Gamble, L. spathacea Gamble var. tomentosa Gamble, L. sphaerocarpa Blume, L. terminalis Ridl., L. ujongensis Gamble, L. ujongensis Gamble var. nervosa Gamble, Tetranthera angusta Nees and T. cordifolia Meisn.), while three additional names are lectotypified in a second step (L. lancifolia (Roxb. ex Nees) Fern.-Vill., L. monticola Gamble and L. trunciflora Gamble) and eleven names are placed into synonymy for the first time (Cylicodaphne myristicifolia (Wall. ex Nees) Meisn. var. acutata Meisn., L. cinerascens Ridl., L. firma (Blume) Hook.f., L. foxiana Gamble, L. hirsutior Kosterm., L. magnifica (Miq.) Fern.-Vill., L. paludosa Kosterm., L. persella Ridl., L. rufofusca Kosterm., L. spathacea Gamble, and L. umbellata (Lour.) Merr. var. fuscotomentosa (Meisn.) I.M.Turner). Most species have a global conservation assessment of Least Concern, while a few species are either Vulnerable (L. acrantha and L. fenestrata), Endangered (L. claviflora Gamble, L. curtisii and L. penangiana), Critically Endangered (L. ridleyi Gamble) and one species considered to be Data Deficient (L. glabrifolia Ridl.).