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''Desfontainia'' is a genus of flowering plants placed currently in the family Columelliaceae, though formerly in Loganiaceae,〔Leeuwenberg,A.J.M. 1969. Notes on American Loganiaceae IV. Revision of ''Desfontainia'' Ruiz et Pav. Acta Bot. Neerl. 18: 669-79.〕 Potaliaceae (now subsumed in Gentianaceae), or a family of its own, Desfontainiaceae. ;species〔(The Plant List, search for ''Desfontainia'' )〕〔(Tropicos, search for ''Desfontainia'' )=〕 # ''Desfontainia fulgens'' D.Don - Chile, Argentina (Neuquén, Río Negro) # ''Desfontainia spinosa'' Ruiz & Pav. - from Costa Rica to Chile + Argentina # ''Desfontainia splendens'' Humb. & Bonpl. - from S Mexico to Bolivia The best known species, ''D. spinosa'' ('Chilean holly'), is a native of rainforests and mountain slopes in southern Central America and South America, occurring from Costa Rica in the north to certain islands of Tierra del Fuego (shared by Chile and Argentina) in the extreme South, being present also in Panama, Colombia, Venezuela, Peru, Bolivia and Ecuador. Uses include medicinal / hallucinogenic purposes, a natural dye and as an ornamental evergreen shrub. In cultivation,it will grow slowly (in 10–20 years) to some 2.5m in height and width, but,in the wild,it can also take the form of a small tree and reach around 4m. It has glossy dark green, holly-like leaves, and waxy red tubular flowers, often with yellow tips, and reaching 4 cm in length. The fruit is a greenish-yellow berry circa 1.5 cm in diameter and contains around 44 glistening, coffee-brown seeds. It is a calcifuge (i.e. requires a lime-free environment) and will thrive in wetter conditions in the wild than it is sometimes given credit for in the horticultural literature, occurring as it does in bogs and swamps. It is usually a terrestrial plant, but can also grow as an epiphyte. The genus was named for the French botanist, René Louiche Desfontaines. It is hardy to , and requires winter protection in areas with significant frosts. ''Desfontainia'' was introduced into cultivation in Europe by William Lobb in 1843. It has gained the Royal Horticultural Society's Award of Garden Merit.〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=639 )〕 ==Habitat== In the Valdivian temperate rainforest of Chile and Argentina ''D. spinosa'' is typically found growing in the understorey of forests dominated by ''Nothofagus'' (southern beech) species - particularly lenga (''Nothofagus pumilio'') and coihue (''Nothofagus dombeyi'').〔http://www.florachilena.cl/Niv_tax/Angiospermas/Ordenes/Dipsacales/Desfontainiaceae/Taique.htm〕 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「Desfontainia」の詳細全文を読む スポンサード リンク
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