Revision of The Genus senesce L. in Ethiopia
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Date
1990-06
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Addis Ababa University
Abstract
In this study all species of Senecio or.curing in Ethiopia are
treated. A historical survey of the genus with some emphasis on taxa
occuring in Ethiopia is given. The morphology of all - species, pollen
features of eight species and the anatomy of two species are
discussed. A phytogeographical grouping of all species is made and
their distribution mapped (except for s. subsessi1is Oliv & Hiern, s.
ruwenzoriensis S. Moore and S. macrog1ossus DC). Twenty-five species
are recognized and keys on floral and vegetative characters ar given.
Two species, viz. S. ruwenzoriensis S. Moore and S. macrog1ossus DC
are reported in Ethiopia for the first time. A new variety S.
schultzii Hochst. ex A. Rich var. 1anatus Mesfin & Otieno is
described.
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Biology