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Dendrosenecio johnstonii, formerly Senecio johnstonii, is a species of giant groundsel found in the middle altitudes of Mount Kilimanjaro in Africa. A recent botanical reclassification split off some species formerly in Senecio, putting the giant groundsels in the new genus Dendrosenecio. It also redefined the former species Senecio cottonii, as a subspecies of Dendrosenecio johnstonii. Both genera are in the family Asteraceae. The giant grounsels 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. As it moved down the mountain, the adaptations necessary for the new environment created the new species, Dendrosenecio johnstonii. Various subspecies are found on other mountains.
D. johnstonii lives between the altitudes of 2,750 and 3,350 meters (9,020 and 10,990 ft) on Kilimanjaro.
Giant Groundsel · Dendrosenecio battiscombei · Dendrosenecio brassiciformis · Dendrosenecio cheranganiensis · Dendrosenecio elgonensis · Dendrosenecio erici-rosenii · Dendrosenecio keniensis · Dendrosenecio keniodendron · Giant Groundsel · Dendrosenecio meruensis · Giant Groundsels
Text excerpted from the Wikipedia article Dendrosenecio johnstonii by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
