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''Dendrosenecio'' is a genus of flowering plants in the sunflower family.〔Nordenstam, Rune Bertil. 1978. Opera Botanica 44: 40〕〔(Tropicos, ''Dendrosenecio'' B. Nord. )〕 It is a segregate of ''Senecio'',〔 in which it formed the subgenus ''Dendrosenecio''.〔 Its members, the giant groundsels, are native to the higher altitude zones of ten mountain groups in equatorial East Africa, where they form a conspicuous element of the flora. They have a giant rosette habit, with a terminal leaf rosette at the apex of a stout woody stem. When they bloom, the flowers form a large terminal inflorescence. Concomitantly, two to four lateral branches are normally initiated. As a result, old plants have the appearance of candelabras the size of telephone poles, each branch with a terminal rosette.〔 ==Species== ''Dendrosenecio'' varies geographically between mountain ranges, and altitudinally on a single mountain. There has been disagreement among botanists as to which populations of ''Dendrosenecio'' warrant recognition as species, and which should be relegated to the status of subspecies or variety. The following list, taken from Knox & Palmer〔 will be used for articles about this genus. # ''Dendrosenecio adnivalis'' (Stapf) E.B.Knox (1993) # ''Dendrosenecio battiscombei'' (R.E.Fr. & T.C.E.Fr.) E.B.Knox (1993) # ''Dendrosenecio brassiciformis'' (R.E.Fr. & T.C.E.Fr.) Mabb. (1986) # ''Dendrosenecio cheranganiensis'' (Cotton & Blakelock) E.B.Knox (1993) # ''Dendrosenecio elgonensis'' (T.C.E.Fr.) E.B.Knox (1993) # ''Dendrosenecio erici-rosenii'' (R.E.Fr. & T.C.E.Fr.) E.B.Knox (1993) # ''Dendrosenecio johnstonii'' (Oliv.) B.Nord. (1978) # ''Dendrosenecio keniensis'' (Baker f.) Mabb. (1986) # ''Dendrosenecio keniodendron'' (R.E.Fr. & T.C.E.Fr.) B.Nord. (1978) # ''Dendrosenecio kilimanjari'' (Mildbr.) E.B.Knox (1993) # ''Dendrosenecio meruensis'' (Cotton & Blakelock) E.B.Knox (1993) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dendrosenecio」の詳細全文を読む スポンサード リンク
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