Actinodaphne

Actinodaphne is an Asian genus of flowering plants in the laurel family (Lauraceae). It contains approximately 121 species[1] of dioecious evergreen trees and shrubs.[2]

Actinodaphne
Actinodaphne malaccensis
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Laurales
Family: Lauraceae
Genus: Actinodaphne
Nees
Species

See text

Synonyms
  • Parasassafras D.G.Long
Actinodaphne lancifolia

Species range across tropical and subtropical regions of South Asia, Southeast Asia, southern China, Japan, New Guinea, Queensland, Solomon Islands, and Fiji.[1] There are 17 Chinese species, 13 of which are endemic.[2]

Description

The trees are 3 to 25 m tall, with leaves usually clustered or nearly verticillate, rarely alternate or opposite, unlobed, pinninerved, and rarely triplinerved. The flowers are star-shaped, small, and greenish. The flowers are clustered or whorled and are unisexual.[2] Umbels are solitary or clustered or arranged in a panicle or raceme; involucral bracts are imbricated and caducous. The perianth tube is short; perianth segments usually number six in two whorls of three each, nearly equal, and rarely persistent. The male flowers have fertile stamens usually 9 in three whorls of three each; filaments of the first and second whorls are eglandular, and of the third whorl are biglandular at the base; anthers are all introrse and four-celled; cells opening by lids; the rudimentary pistil is small or lacking. The female flowers has staminodes as many as stamens of male flowers; the ovary is superior; the stigma is shield-shaped or dilated. The fruit is a berry-like drupe seated on shallow or deep, cup-shaped or discoid, perianth tube. It has a small single seed dispersed mostly by birds.

Ecology

Actinodaphne species require continuously moist soil, and do not tolerate drought and frost. The laurel trees fall within the broad-leaved forests; mid-montane deciduous forests; and high-montane mixed stunted forests. Some species grow in high-altitude forests at 1,500–3,300 m (4,900–10,800 ft).

Selected species

121 species of Actinodaphne are recognized. They include:[1]

  • Actinodaphne albifrons Kosterm. – Sri Lanka
  • Actinodaphne bourdillonii Gamble – southern India
  • Actinodaphne bourneae Gamble – southern India
  • Actinodaphne cupularis (Hemsl.) Gamble – southern China to Thailand
  • Actinodaphne cuspidata Gamble – Peninsular Malaysia
  • Actinodaphne ellipticbacca Kosterm. – northern Vietnam
  • Actinodaphne forrestii (C.K.Allen) Kosterm. – southern China (Yunnan, Guangxi, and Guizhou) to Vietnam
  • Actinodaphne fragilis Gamble – Peninsular Malaysia
  • Actinodaphne glaucina C.K.Allen – Hainan
  • Actinodaphne henryi Gamble – China (southern Yunnan) to northern Indochina
  • Actinodaphne johorensis Gamble – Peninsular Malaysia
  • Actinodaphne kweichowensis Yen C.Yang & P.H.Huang – China (southwest Guangxi and southwest Guizhou)
  • Actinodaphne lanata Meisn. – southern India
  • Actinodaphne lawsonii Gamble – southern India
  • Actinodaphne lecomtei C.K.Allen – China (Sichuan, Guizhou, and northern Guangdong)
  • Actinodaphne malaccensis Hook.f. – Peninsular Malaysia
  • Actinodaphne menghaiensis J.Li – China (southern Yunnan)
  • Actinodaphne molochina Nees – Sri Lanka
  • Actinodaphne montana Gamble – Peninsular Thailand and Peninsular Malaysia
  • Actinodaphne mushanensis (Hayata) Hayata – Taiwan
  • Actinodaphne nitida Teschner – New Guinea and Solomon Islands
  • Actinodaphne obovata (Nees) Blume – central Himalayas to China (southern and southeastern Yunnan)
  • Actinodaphne obscurinervia Yen C.Yang & P.H.Huang – China (eastern Sichuan)
  • Actinodaphne omeiensis (H.Liu) C.K.Allen China (Sichuan, Guizhou) and southwestern Thailand
  • Actinodaphne paotingensis Yen C.Yang & P.H.Huang – Hainan
  • Actinodaphne pilosa (Lour.) Merr. – China (Guangxi, Guangdong, and Hainan), Laos, and Vietnam
  • Actinodaphne pruinosa Nees – Peninsular Malaysia and Borneo
  • Actinodaphne quinqueflora Nees, syn. Litsea ligustrina (Nees) Fern.-Vill. – Bangladesh, southwestern India, Myanmar, northeastern Pakistan, Sri Lanka
  • Actinodaphne salicina Meisn. – southern India
  • Actinodaphne speciosa Nees – Sri Lanka
  • Actinodaphne stenophylla Thwaites – Sri Lanka
  • Actinodaphne trichocarpa C.K.Allen – China (Sichuan, northeastern Yunnan, and Guizhou)
  • Actinodaphne tsaii Hu – China (southern and southeastern Yunnan)

References

  1. Actinodaphne Nees. Plants of the World Online, Kew Science. Accessed 28 August 2022.
  2. Flora of China
  • "Actinodaphne". Annotated Checklist of the Flowering Plants of Nepal via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.


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