Rough-leaf leucas (Leucas decemdentata)

Rough-leaf leucas (Leucas decemdentata) is a species of plant in the Lamiaceae, herbaceous, erect or deciduous, with rectangular stems, branched, green, white-haired, growing in colonies or solitary, on the forest floor, bushes, roadsides and plantations.

L. decemdentata has simple leaves, up to 6 cm long, up to 3 cm wide, acute at the base and tip, serrate margins, green surface and white-haired. Leaf stalks 1 cm long. Inflorescences in panicles, growing in leaf axils or at the tip of stems. Flowers are white.



TAXON

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Lamiales
Family: Lamiaceae
Subfamily: Lamioideae
Tribe: Leucadeae
Genus: Leucas R.Br. in Prodr. Fl. Nov. Holland.: 504 (1810)
Species: Leucas decemdentata (Willd.) Sm. in A.Rees, Cycl. 20: n.° 6 (1812)
Variety: Leucas decemdentata var. angustifolia (Wall. ex Benth.) V.Singh, Leucas decemdentata var. decemdentata, Leucas decemdentata var. scaberula Hook.f., Leucas decemdentata var. sebastiana (Subba Rao & Kumari) V.Singh

HOMOTYPIC SYNONYMS

Phlomis decemdentata Willd. in Sp. Pl., ed. 4. 3: 124 (1800)

PUBLICATIONS

Balkrishna, A. (2018). Flora of Morni Hills (Research & Possibilities): 1-581. Divya Yoga Mandir Trust.

Bramley, G.L.C. & al. (eds.) in Ridley, H.N. (2022). Flora of the Malay Peninsula, ser. II, 9: 1-301. Authority of teh Government of the Straits Settlements.

Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

Karthigeyan, K., Pandey, R.P. & Mao, A.A. (eds.) (2023). Flora of Andaman and Nicobar Islands 2: 1-689. Botanical Survey of India. Ministry of environment, forest and climate change.

Mabberley, D.J. & De Kok, R.P.J. (2004). Labiatae. Flore de la Nouvelle-Calédonie et Dépendances 25: 20-141. Muséum National d'Histoire Naturelle, Paris.

Morat, P. & Veillon, J.-M. (1985). Contributions à la conaissance de la végétation et de la flore de Wallis et Futuna. Bulletin du Muséum National d'Histoire Naturelle. Section B, Adansonia 7: 259-329.

Plunkett, G.M., Ranker, T.A., Sam, C. & Balick, M.J. (2022). Towards a checklist of the vascular flora of Vanuatu. Candollea 77: 105-118.

Rajbhandari, K.R., Rai, S.K. & Chhetri, R. (2022). A Handbook of the Flowering Plants of Nepal 4: 1-522. Department of Plant Resources, Thapathali, Kathmandu, Nepal.

Welsh, S.L. (1998). Flora Societensis: 1-420. E.P.S. Inc. Utah.

Whistler, W.A. (2022). Flora of Samoa Flowering Plants: 1-930. National Tropical Botanicl Garden. Smithsonian National Museum of Natural History.

VERNACULAR NAME

Chinese (simplified): 白绒草
Chinese (traditional): 疏毛白絨草 - 柔毛繡球防風
English: Rough-leaf leucas, Flaccid Leucas
Indonesian: Keleng, Keleng Putih
Javanese: Keleng

Aryo Bandoro
Dlium TheDlium
YouTube: https://www.youtube.com/@Dlium