Leucas

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Lamiaceae
Subfamilia: Lamioideae
Tribus: Leucadeae
Genus: Leucas
Species (111 accepted):

L. abyssinica – L. aequistylosa – L. aggerestris – L. alba – L. alluaudii – L. anandaraoana – L. angularis – L. angustissima – L. argentea – L. aspera – L. bakeri – L. beddomei – L. biflora – L. bracteosa – L. calostachys – L. capensis – L. cephalantha – L. cephalotes – L. chinensis – L. ciliata – L. clarkei – L. collettii – L. cuneifolia – L. decemdentata – L. deflexa – L. densiflora – L. deodikarii – L. dhofarensis – L. diffusa – L. discolor – L. ebracteata – L. ellipticifolia – L. eriostoma – L. flagellifera – L. fulvipila – L. glabrata – L. grandis – L. hagghierensis – L. helferi – L. helianthemifolia – L. helicterifolia – L. hephaestis – L. hirta – L. hirundinaris – L. hyssopifolia – L. inflata – L. jamesii – L. kishenensis – L. lamiifolia – L. lanata – L. lanceifolia – L. lavandulifolia – L. longifolia – L. macrantha – L. manipurensis – L. marrubioides – L. martinicensis – L. masaiensis – L. mathewiana – L. menthifolia – L. milanjiana – L. minimifolia – L. minutiflora – L. montana – L. mukerjiana – L. mwingensis – L. nepetifolia – L. neufliseana – L. neuflizeana – L. nubica – L. nutans – L. nyassae – L. oligocephala – L. ovata – L. pearsonii – L. pechuelii – L. penduliflora – L. pilosa – L. prostrata – L. pseudoglabrata – L. pubescens – L. rosmarinifolia – L. royleoides – L. ruspoliana – L. samhaensis – L. sebaldiana – L. sexdentata – L. sivadasaniana – L. somalensis – L. songeana – L. spiculifolia – L. stachydiformis – L. stelligera – L. stormsii – L. stricta – L. subarcuata – L. suffruticosa – L. teres – L. tettensis – L. tomentosa – L. tsavoensis – L. urticifolia – L. urundensis – L. usagarensis – L. vestita – L. virgata – L. volkensii – L. welwitschii – L. wightiana – L. wilsonii – L. zeylanica
Name

Leucas R.Br. , Prodr. Fl. Nov. Holl.: 504 (1810)
Type species: Leucas decemdentata var. decemdentata. Designated as syn. Leucas flaccida R. Br.

Synonyms

Heterotypic
Hemistemma Rchb., Consp. Regn. Veg.: 116 (1828)
Hemistoma Ehrenb. ex Benth. in N.Wallich, Pl. Asiat. Rar. 1: 60 (1830)
Lasiocorys Benth., Labiat. Gen. Spec.: 600 (1834)
Blandina Raf., Fl. Tellur. 3: 88 (1837)
Elbunis Raf., Fl. Tellur. 3: 88 (1837)
Eneodon Raf., Fl. Tellur. 3: 88 (1837)
Heptrilis Raf., Fl. Tellur. 3: 89 (1837)
Hetrepta Raf., Fl. Tellur. 3: 88 (1837)
Isodeca Raf., Fl. Tellur. 3: 88 (1837)
Leucasia Raf., Fl. Tellur. 3: 88 (1837)
Physoleucas Jaub. & Spach, Ill. Pl. Orient. 5: 48 (1855)

Distribution
Native distribution areas:

Continental: Africa to NE. Australia
Afghanistan, Andaman Is., Angola, Assam, Bangladesh, Benin, Borneo, Botswana, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Cape Verde, Central African Repu, Chad, China South-Central, China Southeast, Christmas I., Comoros, Congo, Djibouti, East Himalaya, Egypt, Eritrea, Ethiopia, Free State, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Gulf States, Hainan, India, Iran, Ivory Coast, Japan, Jawa, Kenya, KwaZulu-Natal, Laos, Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Maldives, Mali, Maluku, Mauritania, Mauritius, Mozambique, Myanmar, Namibia, Nansei-shoto, Nepal, New Guinea, Nicobar Is., Niger, Nigeria, Northern Provinces, Ogasawara-shoto, Oman, Pakistan, Philippines, Queensland, Rwanda, Saudi Arabia, Senegal, Sierra Leone, Sinai, Socotra, Somalia, South China Sea, Sri Lanka, Sudan, Sulawesi, Sumatera, Swaziland, Taiwan, Tanzania, Thailand, Tibet, Togo, Uganda, Vietnam, West Himalaya, Yemen, Zambia, Zaïre, Zimbabwe
Introduced into:
Brazil Northeast, Brazil Southeast, Caroline Is., Cook Is., Costa Rica, Dominican Republic, Fiji, Haiti, Leeward Is., New Caledonia, Niue, Samoa, Seychelles, Society Is., Solomon Is., Tonga, Trinidad-Tobago, Tuamotu, Tubuai Is., Wallis-Futuna Is., Windward Is.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Brown, R. 1810. Prodromus Florae Novae Hollandiae et Insulae Van Diemen. pp. i–viii + 145–590, Londini: R.Taylor. BHL Reference page. : 504.

Additional references

Scheen, A-C. & Albert, V.A. (2007) Nomenclatural and Taxonomic Changes within the Leucas Clade (Lamioideae; Lamiaceae), Systematics and Geography of Plants 77(2): 234.

Links

Govaerts, R. et al. 2022. Leucas in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2022 Mar 26. Reference page.
Hassler, M. 2022. Leucas. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2022. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2022 Mar 26. Reference page.
Tropicos.org 2022. Leucas. Missouri Botanical Garden. Published online. Accessed: 26 Mar 2022.
International Plant Names Index. 2022. Leucas. Published online. Accessed: Mar 26 2022.

Vernacular names
العربية: أم عقدة
中文: 绣球防风属

Leucas is a genus of plants in the family Lamiaceae, first described by Robert Brown in 1810. It contains over 200 species, widespread over much of Africa, and southern and eastern Asia (Iran, India, China, Japan, Indonesia, etc.) with a few species in Queensland and on various islands in the Indian Ocean.[2][1]
Species

As of March 2014 The Plant List recognises 133 accepted species (including infraspecific names):[3]

Leucas abyssinica (Benth.) Briq.
var. argyrophylla (Vatke) Sebald
var. brachycalyx (Chiov.) Lanza
Leucas aequistylosa Sebald
Leucas aggerestris (Wild) Sebald
Leucas alba (Forssk.) Sebald
Leucas alluaudii Sacteux
Leucas anandaraoana Umam.Rao & P.Daniel
Leucas angularis Benth.
Leucas angustissima Sedgw.
Leucas argentea Gürke
var. neumannii (Gürke) Sebald
Leucas aspera (Willd.) Link
Leucas bakeri Hiern
Leucas beddomei (Hook.f.) Sunojk. & P.Mathew
Leucas biflora (Vahl) Sm.
Leucas bracteosa Gürke
Leucas calostachys Oliv.
var. schweinfurthii (Gürke) Sebald
Leucas capensis (Benth.) Engl.
Leucas cephalantha Baker
Leucas cephalotes (Roth) Spreng.
Leucas chinensis (Retz.) Sm.
f. riukiuensis (Ohwi) T.Yamaz.
Leucas ciliata Benth.
Leucas clarkei Hook.f.
Leucas collettii Prain
Leucas cuneifolia Baker
Leucas decemdentata (Willd.) Sm.
var. angustifolia (Wall. ex Benth.) V.Singh
var. sebastiana (Subba Rao & Kumari) V.Singh
Leucas deflexa Hook.f.
var. biglomerulata (Lebrun & Touss.) Sebald
var. deflexa
var. kondowensis (Baker) Sebald
Leucas densiflora Vatke
Leucas deodikarii Billmore & Hemadri
Leucas dhofarensis Hedge & Sebald
Leucas diffusa Benth.
Leucas discolor Sebald
Leucas ebracteata Peyr.
Leucas ellipticifolia (Sebald) Bramley
Leucas eriostoma Hook.f.
var. lanata Hook.f.
Leucas flagellifera (Balf.f.) Gürke
Leucas fulvipila Bramley
Leucas glabrata (Vahl) Sm.
Leucas grandis Vatke
Leucas hagghierensis Al-Gifri & Cortés-Burns
Leucas helferi Hook.f.
Leucas helianthemifolia Desf.
Leucas helicterifolia Haines
Leucas hephaestis (Wild) Sebald
Leucas hirta (B.Heyne ex Roth) Spreng.
Leucas hirundinaris Sebald
Leucas hyssopifolia Benth.
Leucas inflata Benth.
Leucas jamesii Baker
Leucas kishenensis (Radcl.-Sm.) Sebald
Leucas lamiifolia Desf.
Leucas lanata Benth.
Leucas lanceifolia Desf.
Leucas lavandulifolia Sm.
Leucas longifolia Benth.
Leucas macrantha Blatt. & Hallb.
Leucas manipurensis N.P.Singh
Leucas marrubioides Desf.
Leucas martinicensis (Jacq.) R.Br.
Leucas masaiensis Oliv.
var. tricrenata (Bullock) Sebald
var. venulosa (Baker) Sebald
Leucas mathewiana Sunojk.
Leucas menthifolia Baker
var. fulva (Robyns & Lebrun) Sebald
var. menthifolia
Leucas milanjiana Gürke
Leucas minimifolia Chiov.
Leucas minutiflora Bramley
Leucas montana (Roth) Spreng.
Leucas mukerjiana Subba Rao & Kumari
Leucas mwingensis Sebald
Leucas nepetifolia Benth.
Leucas neufliseana Courbai
Leucas neuflizeana Courbon
Leucas nubica Benth.
Leucas nutans (Roth) Spreng.
Leucas nyassae Gürke
var. velutina (C.H.Wright ex Baker) Sebald
Leucas oligocephala Hook.f.
var. bowalensis (A.Chev.) Sebald
var. oligocephala
Leucas ovata Benth.
Leucas pearsonii Sebald
Leucas pechuelii (Kuntze) Baker
Leucas penduliflora Al-Gifri & Cortés-Burns
Leucas pilosa Benth.
Leucas prostrata (Hook.f.) Gamble
Leucas pseudoglabrata Bramley
Leucas pubescens Benth.
Leucas rosmarinifolia Benth.
Leucas royleoides (Benth.) Gürke
Leucas ruspoliana Gürke
Leucas samhaensis Cortés-Burns & A.G.Mill.
Leucas sebaldiana Sunojk.
Leucas sexdentata Skan
Leucas sivadasaniana Sunojk.
Leucas somalensis Vatke
Leucas songeana Sebald
Leucas spiculifera (Balf.f.) Guerke
Leucas spiculifolia (Balf.f.) Gürke
Leucas stachydiformis (Benth.) Hochst. ex Briq.
Leucas stelligera Wall. ex Benth.
Leucas stormsii Gürke
Leucas stricta Benth.
Leucas subarcuata Sebald
Leucas suffruticosa Benth.
Leucas teres Benth.
Leucas tettensis Vatke
Leucas tomentosa Gürke
Leucas tsavoensis Sebald
Leucas urticifolia (Vahl) Sm.
Leucas urundensis Robyns & Lebrun
Leucas usagarensis Gürke
Leucas vestita Benth.
var. angustifolia Hook.f.
var. oblongifolia Hook.f.
var. sericostoma Hook.f.
Leucas virgata Balf.f.
Leucas volkensii Gürke
Leucas welwitschii Gürke
Leucas wightiana Wall. ex Benth.
Leucas wilsonii Sebald
Leucas zeylanica (L.) W.T.Aiton
var. walkeri (Benth.) Hook.f.

A new species, Leucas sahyadriensis Sunojk., has recently been described and is endemic to the Western Ghats of southern India.[4]
References

"Leucas". Royal Botanic Gardens, Kew. Retrieved 11 March 2014.
Kew World Checklist of Selected Plant Families
"Leucas". The Plant List. Retrieved 11 March 2014.
Sunojkumar, Purayidathkandy (2019-03-27). "Leucas sahyadriensis (Lamiaceae: Lamioideae) an overlooked new endemic species from India and notes on Leucas chinensis". Phytotaxa. 399 (3): 187–194. doi:10.11646/phytotaxa.399.3.2. ISSN 1179-3163.