Charles Howard Stirton

Bituminaria bituminosa, the Arabian pea or pitch trefoil, is a perennial Mediterranean herb species in the genus Bituminaria. The pterocarpans bitucarpin A and B can be isolated from the aerial parts of B. bituminosa. It has several potential uses: (i) forage crop, (ii) Phytostabilization of heavy metal contaminated or degraded soils, (iii) Synthesis of furanocoumarins (psoralen, angelicin, xanthotoxin and bergapten), compounds of broad pharmaceutical interest. It is easily recognizable by the characteristic smell of bitumen from its leaves. This strong tar-like characteristic aroma appears

Otholobium is a genus of flowering plants in the pea family with over 50 named species, but several also remain undescribed so far. Species may be herbaceous perennials, subshrubs, shrubs or small trees. The alternately set leaves are accompanied by stipules and mostly consist of three leaflets, sometimes just one. The inflorescences are on short or long stalks in the axils of the leaves. Within the inflorescences, the pea-like flowers occur in groups of three, rarely of two, subtended by a bract, and each individual flower also is subtended by a narrow bract. The petals may be white, pink,

Polhillia is a genus of flowering plants in the family Fabaceae. It includes 11 species of shrubs and herbs native to the Cape Provinces of South Africa. They grow in Mediterranean-climate renosterveld (shrubland) and scrub-grassland, typically in heavy soils. The genus belongs to subfamily Faboideae.

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Cullen plicatum, synonym Psoralea plicata, is a herb species in the genus Psoralea. It is native from northern Africa to north-west India and to South Africa. C. plicatum contains plicadin, a coumestan, and plicatin A and B, two hydroxycinnamic acids.

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