Original Research

The taxonomic significance of trichome type and distribution in Melolobium (Fabaceae)

A. Moteetee, B-E. van Wyk, P. M. Tilney
Bothalia | Vol 32, No 1 | a470 | DOI: https://doi.org/10.4102/abc.v32i1.470 | © 2002 A. Moteetee, B-E. van Wyk, P. M. Tilney | This work is licensed under CC Attribution 4.0
Submitted: 10 September 2002 | Published: 11 September 2002

About the author(s)

A. Moteetee, Department of Botany. Rand Afrikaans University., South Africa
B-E. van Wyk, Department o f Botany. Rand Afrikaans University., South Africa
P. M. Tilney, Department of Botany. Rand Afrikaans University, South Africa

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Abstract

All species of Melolobium Eckl. & Zeyh. were examined for epidermal features and particularly the glands which are a distinctive feature amongst the southern African Genisteae. For comparative purposes, three species of Argxrolobium Eckl.& Zeyh.. all  five species of Dichilus DC. and five species of Polhillia C.H.Stirt. were also examined for trichome type and distribution. Three trichome types are recognized in Melolobium. Trichome type and distribution provide an important insight into taxonomic relations at species level in Melolobium and sometimes even allow a distinction between regional forms. The distribution of glands (sessile and stalked) is of considerable diagnostic value in identifying  species  of Melolobium. A key to all the species of the genus based mainly on type and distribution of trichomes. is presented.


Keywords

Fabaceae; Melolobium Eckl. & Zeyh.. sessile glands; stalked glands; trichomes. uniseriate hairs

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