Dendrocnide

''Dendrocnide'' is a genus of approximately 40 species of plants in the nettle family ''Urticaceae''. They have a wide distribution across North East India, Southeast Asia, Australia and the Pacific Islands. In Australia they are commonly known as stinging trees.

Description

Plants in this genus are evergreen shrubs or small trees, with the exception of the aptly-named giant stinging tree (''D. excelsa'') which may reach in height. Dendrocnide species have a sympodial growth habit and are armed with fine needle-like stinging hairs. They are generally fast-growing and produce soft wood, and are usually found in areas of disturbed forest where they fill the role of a pioneer species.

The leaves are simple, alternate, and petiolate, (i.e. having long petioles or leaf-stems), and the leaf blade may be either entire or have some form of dentate toothing (notches or teeth on the edges of the leaf). The leaves are also often large, and may be either leathery or papery. The stipules are fused and deciduous, leaving conspicuous scars on the twigs after falling.

The inflorescences are axillary and pedunculate, flowers are either solitary or in racemes or panicles. Male flowers may be 4- or 5-merous and the female flowers are 4-merous. Most species are dioecious, a small number are monoecious.

Fruits are an achene, often compressed, and may be eclosed within the swollen pedicel.

Taxonomy

The genus ''Dendrocnide'' was raised in 1851 by the Dutch physician, botanist, and taxonomist Friedrich Anton Wilhelm Miquel (1811–1871) who dedicated a large part of his life to describing specimens of the flora of the Dutch East Indies which were sent to him by his many contacts. This genus was first published in the work '' Plantae Junghuhnianae'', in which he described three species, namely ''D. peltata'', ''D. costata'' (the original type species that is now known as ''D. stimulans'') and ''D. coerulea''.

Etymology

The name of this genus comes from Ancient Greek '' déndron'' (tree), and '' knī́dē'' (nettle), referring to the large size of most species in this genus.

List of species

The following list shows all 42 species recognised by Plants of the World Online, and a brief summary of its distribution.
* '' Dendrocnide amplissima'' (Blume) Chew - Maluku Islands, Sulawesi
* '' Dendrocnide basirotunda'' (C.Y.Wu) Chew - China south-central, Myanmar, Thailand
* '' Dendrocnide carriana'' Chew - Lesser Sunda Islands, Maluku Islands, New Guinea, Philippines
* '' Dendrocnide celebica'' Chew - Sulawesi
* '' Dendrocnide contracta'' (Blume) Chew - Java
* '' Dendrocnide corallodesme'' (Lauterb.) Chew - New Guinea, Queensland
* '' Dendrocnide cordata'' (Warb. ex H.J.P.Winkl.) Chew - Lesser Sunda Islands, New Guinea, Bismarck Archipelago
* '' Dendrocnide cordifolia'' (L.S.Sm.) Jackes - Queensland
* '' Dendrocnide crassifolia'' (C.B.Rob.) Chew - Philippines, Sulawesi
* '' Dendrocnide densiflora'' (C.B.Rob.) Chew - Philippines
* '' Dendrocnide elliptica'' (Merr.) Chew - Borneo, Philippines
* ''Dendrocnide excelsa'' (Wedd.) Chew - New South Wales, Queensland
* '' Dendrocnide gigantea'' (Poir.) Chew - Melanesia
* '' Dendrocnide harveyi'' (Seem.) Chew - Cook Islands, Fiji, Niue, Samoa, Tonga
* '' Dendrocnide kajewskii'' Chew - Solomon Islands
* '' Dendrocnide kjellbergii'' Chew - Sulawesi
* '' Dendrocnide kotoensis'' (Hayata ex Yamam.) B.L.Shih & Yuen P.Yang - Taiwan
* '' Dendrocnide latifolia'' (Gaudich.) Chew - Caroline Islands, Marianas, New Caledonia, Solomon Islands, Vanuatu
* '' Dendrocnide longifolia'' (Hemsl.) Chew - Bismarck Archipelago, Maluku Islands, New Guinea, Solomon Islands, Sulawesi
* '' Dendrocnide luzonensis'' (Wedd.) Chew - Philippines
* '' Dendrocnide meyeniana'' (Walp.) Chew - Philippines, Taiwan
* '' Dendrocnide microstigma'' (Wedd.) Chew - Java, Lesser Sunda Islands, Maluku Islands, Sulawesi
* '' Dendrocnide mirabilis'' (Rech.) Chew - New Guinea, Solomon Islands
* '' Dendrocnide morobensis'' Chew - New Guinea
* ''Dendrocnide moroides'' (Wedd.) Chew - Lesser Sunda Islands, New South Wales, Queensland, Vanuatu
* '' Dendrocnide nervosa'' (H.J.P.Winkl.) Chew - New Guinea, Solomon Islands
* '' Dendrocnide oblanceolata'' (Merr.) Chew - Borneo, Sulawesi
* ''Dendrocnide peltata'' (Blume) Miq. - Christmas Island, Java, Lesser Sunda Islands, New Guinea
* ''Dendrocnide photinophylla'' (Kunth) Chew - New South Wales, Queensland
* '' Dendrocnide pruritivus'' H.St.John - Fiji, Wallis and Futuna
* '' Dendrocnide rechingeri'' (H.J.P.Winkl.) Chew - Bismarck Archipelago, New Guinea, Solomon Islands
* '' Dendrocnide rigidifolia'' (C.B.Rob.) Chew - Philippines
* '' Dendrocnide schlechteri'' (H.J.P.Winkl.) Chew - Bismarck Archipelago, New Guinea, Solomon Islands
* '' Dendrocnide sessiliflora'' (Warb.) Chew - Bismarck Archipelago, New Guinea
* '' Dendrocnide sinuata'' (Blume) Chew - Nepal to southern China and western Malesia including Christmas Island
* ''Dendrocnide stimulans'' (L.f.) Chew - China (Guangdong), Hainan, Taiwan, Indo-China, western and central Malesia
* '' Dendrocnide subclausa'' (C.B.Rob.) Chew - Philippines
* '' Dendrocnide ternatensis'' (Miq.) Chew - Lesser Sunda Islands, Maluku Islands, New Guinea
* '' Dendrocnide torricellensis'' (Lauterb.) Chew - New Guinea
* '' Dendrocnide urentissima'' (Gagnep.) Chew - Cambodia, south-central and south-east China, Vietnam
* '' Dendrocnide venosa'' (Elmer) Chew - Philippines
* '' Dendrocnide vitiensis'' (Seem.) Chew - Fiji, New Caledonia, Samoa

References

Notes

{{Taxonbar, from=Q139226

Urticaceae genera
Dioecious plants