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2 Variation in inflorescence structure found amongst the Cape peucedanoid genera. A, Notobubon capensis. B, Notobubon tenuifolius. C, Notobubon pungens. D, Notobubon striatus. E, Notobubon galbaniopsis. F, Notobubon laevigatus. G, Cynorhiza typica.
Source publication
Thesis (M.Sc. in botany)--University of Johannesburg, 2006. Includes bibliographical references (leaves 160-170)
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Citations
A comprehensive taxonomic revision of the genus Notobubon (Apiaceae) is presented. Twelve woody evergreen species are recognised, all (with the exception of N. laevigatum ) endemic to the Cape Floristic Region of South Africa. The taxonomy of these prominent, though poorly collected, species has until now been problematic. They are distinguished from one another by their habit (size and branching pattern), the overall shape, size, and colour of the ultimate leaflet segments, the inflorescence structure (peduncle length, number, and length of rays in the primary umbel), the fruit morphology (fruit size, presence or absence of wings), and the fruit anatomy (symmetry of the mericarps, presence or absence of additional rib vittae, size of commissural vittae). Species relationships are assessed in the form of a cladistic analysis of 26 morphological characters, resulting in a well-resolved phylogenetic hypothesis. A comprehensive key to the species, their correct nomenclature, and typification, together with descriptions and known geographical distribution for all the species are presented and illustrated.
Nanobubon is a recently described genus consisting of two evergreen, perennial suffrutices endemic to the Cape Floristic Region of South Africa. Nanobubon strictum (Spreng.) Magee and N. capillaceum (Thunb.) Magee share a partly sympatric distribution, from the Cape Peninsula northwards to the Cedarberg mountains and eastwards to Port Elizabeth. Although both species are relatively similar in their highly sclerified and much-divided evergreen leaves with sub-terete ultimate segments, they can be distinguished from one another by the orientation of the leaves (erect or reclining), the branching pattern of the leaves (pinnae erect or spreading), the curvature of the leaf rachises and segments (straight or refracted), the colour of the flowers (yellow or cream-coloured) and the prominence of the dorsal ribs on the fruits (prominent or inconspicuous). The nomenclature and typifications, as well as complete descriptions and known geographical distributions are presented.
