The genus Trichodesma (Boraginaceae: Boraginoideae) in southern Africa

Trichodesma R.Br. is a genus of about 45 species known from tropical and subtropical regions of Africa. Asia and Australia. The group comprises predominantly perennial herbs, the flowers characterized by anthers with prolonged connectives, often twisting above the thecae. and a prominent accrescent...

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Veröffentlicht in:	Bothalia 2002-10, Vol.32 (2), p.151-166
Hauptverfasser:	Retief, E. (National Botanical Inst., Pretoria (South Africa). National Herbarium), Van Wyk, A.E
Format:	Artikel
Sprache:	eng
Schlagworte:	AFRICA MERIDIONAL AFRIQUE AUSTRALE ANATOMIA DE LA PLANTA ANATOMIE VEGETALE BORAGINACEAE Boraginoideae DISTRIBUCION GEOGRAFICA DISTRIBUTION GEOGRAPHIQUE FRUITS FRUTAS GEOGRAPHICAL DISTRIBUTION morphology PLANT ANATOMY pollen SOUTHERN AFRICA TAXONOMIA TAXONOMIE TAXONOMY taxonomy. Trichodesma R.Br Trichodesmeae
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Beschreibung
Zusammenfassung:	Trichodesma R.Br. is a genus of about 45 species known from tropical and subtropical regions of Africa. Asia and Australia. The group comprises predominantly perennial herbs, the flowers characterized by anthers with prolonged connectives, often twisting above the thecae. and a prominent accrescent calyx. Five species and three subspecies of 7rii hodesma are currently recognized in southern Africa, with T. angustifolium Harv. subsp. argenteum Relief A.E.van Wyk newly described. These taxa are widespread in southern Africa, occurring in various vegetation types. A key to the species, descriptions, distribution maps and illustrations of various micro- and macromorphological as well as palvnological features are provided.
ISSN:	0006-8241 2311-9284
DOI:	10.4102/abc.v32i2.479