Laportea
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Laportea is a pantropisch common plant species from the family of the Nettle family (Urticaceae). The 20 to 30 Laportea species are pantropically distributed. Laportea species, like nettles, have stinging hairs.
description
Laportea species are annual to perennial herbaceous plants or subshrubs . Most species reach heights of about 1 to 1.5 meters. The whole plants are covered with stinging hairs that are shorter than 5 mm.
The alternate leaves are petiolate. Their paper-like leaf blade is narrow oval to rounded and, mostly coarse, serrated or serrated. The stipules are up to, fused at the top and are between petiole and stem ; but they usually fall off early.
The Laportea species are single- sexed ( monoecious ) or dioecious ( dioecious ). The inflorescences are axillary and terminal and consist of panicle-like , sometimes also grape-like or spike-like arranged, loosely balled zymous partial inflorescences . The flowers are always unisexual, whereby in most species all flowers of an inflorescence have the same sex. If there are bracts in the inflorescences, then they are tiny. The male flowers have four to five similar bloom bracts ; the female two or usually four, the outer ones being much smaller than the two lateral ones. The elongated or hook-shaped stylus remains until the fruit is ripe.
Occurrence
The 20 to 30 Laportea species are pantropically distributed. Only a few species occur in areas with a temperate climate in North America and Asia ( Laportea canadensis or Laportea cuspidata ).
Most species grow in damp places in forests, thickets or bushes, preferably in disturbed places.
Systematics, types (selection)
The genus used to be understood much more broadly. In the meantime, many shrubby and tree-shaped species have been separated into the genus Dendrocnide . However, the division of this family group within the nettle family into the genera Laportea , Dendrocnide , Urera , Girardinia etc. remains unclear. The number of synonyms is considerable. There are about 20 to 30 species in the genus Laportea :
- Laportea aestuans (L.) Chew : It occurs in southern tropical Africa, in Madagascar, Mauritius and Réunion, in Mexico, in Central and South America and on islands in the Caribbean.
- Laportea alatipes Hook. f.
- Laportea bulbifera (Sieb. & Zucc.) Wedd. : It occurs in India, Bhutan, Sri Lanka, Indonesia, Thailand, Myanmar, Vietnam, China, Japan, Korea and in Far Eastern Russia.
- Canadian shrub nettle ( Laportea canadensis (L.) Wedd. ), Occurs in Canada and the United States
- Laportea cuneata (A.Rich.) Chew
- Laportea cuspidata (Weddell) Friis (Syn .: Laportea macrostachya (Maxim.) Ohwi ): It occurs in China, Japan, Korea and Myanmar.
- Laportea decumana (Roxb.) Wedd.
- Laportea disepala (Gagnep.) Chew
- Laportea fujianensis C.J.Chen : It occurs in southern Fujian .
- Laportea grossa (Wedd.) Chew
- Laportea interrupta (L.) Chew : It occurs in India, Sri Lanka, Indonesia, Myanmar, Thailand, Malaysia, Vietnam, Yunnan, Taiwan and in Australia.
- Laportea lanceolata (Engl.) Chew
- Laportea medogensis C.J.Chen : It occurs in southeastern Xizang .
- Laportea mooreana (Hiern) Chew
- Laportea ovalifolia (Schumach.) Chew
- Laportea peduncularis (Wedd.) Chew
- Laportea violacea Gagnep. : It occurs in Thailand, Vietnam and Guangxi .
- Laportea ruderalis (G.Forst.) Chew : It occurs on the Solomon Islands , Christmas Island , Micronesia , French Polynesia , Samoa , Tonga and the Cook Islands .
Here to the genus Dendrocnide are counted:
- Laportea basirotunda C.Y.Wu = Dendrocnide basirotunda (CYWu) Chew
- Laportea gigas Wedd. = Laportea gigantea = Dendrocnide excelsa (Wedd.) Chew
- Laportea moroides Wedd. = Dendrocnide moroides (Wedd.) Chew
- Laportea urentissima Gagnep. = Dendrocnide urentissima (Gagnep.) Chew
swell
- Laportea , p. 85 - the same text online as the printed work , In: Wu Zhengyi, Peter H. Raven & Deyuan Hong (Eds.): Flora of China , Volume 5 - Ulmaceae through Basellaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2003. ISBN 1-930723-27-X .
- David E. Boufford: Laportea - same text online as the printed work , In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 3 - Magnoliidae and Hamamelidae , Oxford University Press, New York a. a. 1997. ISBN 0-19-511246-6 .
- Walter Erhardt u. a .: The big pikeperch. Encyclopedia of Plant Names . Volume 2. Verlag Eugen Ulmer, Stuttgart 2008. ISBN 978-3-8001-5406-7
Individual evidence
- ^ A b c d e Laportea in Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved May 3, 2017.
- ↑ a b c Chen Jiarui (陈家瑞 Chen Chia-jui); Ib Friis, C. Melanie Wilmot-Dear: Laportea Gaudichaud-Beaupré. , Pp. 36–38 - online with the same text as the printed work , In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (ed.): Flora of China. Volume 5: Urticaceae.
