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''Lobelia deckenii'' (syn. ''Lobelia keniensis'') is a species of giant lobelia of the mountains of East Africa. It grows in moist areas, such as valley bottoms and moorland, in contrast to ''Lobelia telekii'' which grows in a similar, but drier habitat. These two species produce occasional hybrids. ''Lobelia deckenii'' plants usually produce multiple rosettes. Each rosette grows for several decades, produces a single large inflorescence and hundreds of thousands of seeds, then dies. Because it has multiple rosettes, it survives to reproduce repeatedly, and plants with more rosettes flower more frequently. It is iteroparous.〔 〕 ''Lobelia deckenii'' plants usually consist of between one and eighteen rosettes, connected underground. Individual rosettes grow slowly in the alpine environment.〔 Individual rosettes may take decades to reach reproductive size, then die after flowering, but the connected rosettes live on.〔 ''Lobelia deckenii'' is the only alpine species of lobelia that lives on Kilimanjaro.〔Young, T.P. 1991. The flora, fauna, and ecology of Mount Kenya and Kilimanjaro. Pp. 37-49 In: Guide to Mount Kenya and Kilimanjaro (Iain Allan, ed.) Mountain Club of Kenya ISBN 978-9966-9856-0-6〕 Kilimanjaro is commonly found in African-alpine zone, between 3800 meters to 4300 meters.〔Kilimanjaro. O rei da África. Revista Planeta, dezembro de 2005.〕 ''Lobelia deckenii ssp. keniensis'' is the variety of ''Lobelia deckenii'' that lives on Mount Kenya, between . It is eaten less by rock hyrax than ''Lobelia telekii'', which occurs more often in hyrax habitat. Lobelia species on Mount Kenya are all pollinated by birds, especially the scarlet-tufted sunbird and the alpine chat. This species of giant lobelia is known for the reservoirs of water held in its rosettes, which freeze at night and protects the apical meristem held in a dense central leaf bud. When this reservoir is drained, the temperature of inner meristem drops below freezing, which does not occur when the fluid is left intact. The crescent-shaped ice cubes formed in these rosettes give rise to the nickname, "gin and tonic lobelia". ==References== 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「Lobelia deckenii」の詳細全文を読む スポンサード リンク
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