Browsing by Author "Bruyns, P"

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    A re-assessment of the genera Tridentea Haw. and Tromotriche Haw
    (Elsevier, 1995) Bruyns, P
    The generic delimitation of Tridentea Haw. and Tromotriche Haw. is considered, Eight species are retained in Tridentea: T. dwequensis (Lückhoff) Leach, T. gemmiflora (Masson) Haw., T. jucunda (N.E. Br.) Leach, I pachyrrhiza (Dinter) Leach, T. parvipuncta (N.E. Br.) Leach, T. marientalensis (Nel) Leach and T virescens (N.E. Br.) Leach. The remaining species are transferred to Tromotriche. Tromotriche engleriana (Schltr.) Leach is referred back to Stapelia as Stapelia engleriana Schltr. Tromotriche then consists of the following 11 species: T. aperta (Masson) Sweet, T. baylissii (Leach) Bruyns, T. choanantha (Lavranos & Hall) Bruyns, T. herrei (Net) Bruyns, T. longii (Lückhoff) Bruyns, T. longipes (Lückhoff) Bruyns, T. pedunculata (Masson) Bruyns, T. revoluta (Masson) Haw., T. ruschiana (Dinter) Bruyns, T. thudichumli (Pillans) Leach and T. umdausensis (Nel) Bruyns. Careful arguments are advanced to justify these changes.
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    The relationships of Huerniopsis and Piaranthus (Apocynaceae- Asclepiadoideae)
    (Aspt American Society of Plant Taxonomists, 1999) Bruyns, P
    It is shown that there is far-reaching similarity between the genera Huerniopsis and Piaranthus. It has been widely assumed that these taxa lack an outer corona. It is demonstrated that this is incorrect but that nevertheless the structure of this corona and its associated nectarial cavity is an apomorphy for this group of species among southern African stapeliads. The two species of Huerniopsis are transferred to Piar- anthus as Piaranthus decipiens (N.E. Br.) Bruyns and P atrosanguineus (N.E. Br.) Bruyns.
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    The relationships of Whitesloanea crassa
    (Cambridge University Press, 1998) Bruyns, P
    It is shown that the monotypic genus Whitesloanea (Asclepiadaceae, Stapelieae) is closely allied to Duvalia andHuernia but nevertheless should remain separate from them. The basionym, Caralluma crassa N.E. Br., is lectotypified.
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    A systematic analysis with notes on the taxonomy of Notechidnopsis (Apocynaceae: Asclepiadoideae).
    (Springer, 1999) Bruyns, P
    The genus Notechidnopsis Lavranos & Bleck is revised and shown to be monophyletic. Two species, N. columnaris (Nel) Lavranos & Bleck and ,V tessellata (Pillans) Lavranos & Bleck are recognised. The holotypes for both species have been found in the Bolus Herbarium (BOL)