![]() ![]() In the same paper two other species of Pectinaria were transferred to a new genus Ophionella and two species of Caralluma, C. was split up and four of its species were transferred to Stapeliopsis ( Bruyns, 1981). The concept of the genus was drastically modified when the genus Pectinaria Haw. ![]() neronis Pillans, which has a remarkable and uniquely tubular outer corona. Pillans in 1928 for the single species S. A phylogeny of the stapeliads based on morphological characters was proposed in Bruyns (2000a) and this was supplemented by a molecular study by Meve & Liede (2002). There are some 320 species distributed among 26 genera, with the highest diversity of genera and species in the dry to arid parts of southern Africa. The stapeliads are highly succulent, essentially leafless members of the tribe Ceropegieae (Apocynaceae – Asclepiadoideae), found in the Old World from southern Africa north-eastwards to India and Myanmar. Eight species of Stapeliopsis are recognized, with no subgeneric divisions.Ĭeropegieae, molecular phylogeny, morphology, taxonomy INTRODUCTION It is shown that a synapomorphy for Stapeliopsis is the laterally flattened inner corona-lobes, which touch the anthers only at their bases. The genera Hermanschwartzia Plowes and Neopectinaria Plowes are rejected. The remaining species fall into an unsupported clade in which S. The species of Stapeliopsis group into two clades. Stapeliopsis is sister to a clade containing Huernia, Orbea and Tromotriche. It is shown that Stapeliopsis is monophyletic in a combined molecular and morphological analysis. The information obtained from this is combined with molecular data from the plastid trnL-F DNA region and ITS1 of the nuclear encoded 18S−26S rRNA cistron, to obtain a hypothesis of the evolutionary relationships among the species. A survey of morphological characters is carried out for Stapeliopsis.
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