Dendrosenecio kilimanjari is a species of flowering plant in the family Asteraceae. It is a giant groundsel found on Mount Kilimanjaro in Africa, below .
Taxonomy It was originally known as Senecio kilimanjari, but a recent botanical reclassification split off some species formerly in Senecio, putting it and various other species in the new genus Dendrosenecio. Both genera are in the family Asteraceae. The giant groundsels of the genus Dendrosenecio evolved, about a million years ago, from a Senecio that established itself on Mount Kilimanjaro, with those that survived adapting into Dendrosenecio kilimanjari. This later colonised other mountains by some means—a standard distance for wind dispersal of seeds is a few metres—and these isolated populations adapted in ways different from the parent population, creating new species.
Infraspecific name synonymy The infraspecific names for the giant groundsels have become somewhat confusing: Dendrosenecio kilimanjari (Mildbr.) E.B.Knox subsp. cottonii (Hutch. & G.Taylor) E.B.Knox Dendrosenecio johnstonii (Oliv.) B.Nord. subsp. cottonii (Hutch. & G.Taylor) B.Nord. Senecio cottonii Hutch. & G.Taylor Senecio johnstonii Oliv. subsp. cottonii (Hutch. & G.Taylor) Mabb. Senecio johnstonii Oliv. var. cottonii (Hutch. & G.Taylor) C.Jeffrey Dendrosenecio kilimanjari (Mildbr.) E.B.Knox subsp. kilimanjari Senecio johnstonii Oliv. var. kilimanjari (Mildbr.) C.Jeffrey Senecio kilimanjari Mildbr.
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