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''Salvia involucrata'' (Roseleaf sage) is a herbaceous perennial belonging to the family Lamiaceae. It is native to the Mexican states of Puebla, Tamaulipas, and Veracruz, growing in shady places such as the edge of forests. Its specific epithet, "''involucrata''", refers to the prominent flower bracts, which are large and colorful. ==Description== ''Salvia involucrata'' grows five feet or taller before it starts blooming in late summer. The plant's flowers and bracts are a reddish, beetroot color. The bracts occur in pairs which envelop three flowers each, falling away as the flowers expand. The plant's leaves are small, flat mid-green, slightly cordate-shaped. Unusually, the leaves' petioles and veins share the flowers' beetroot-reddish hue.〔 Genetically, the species has eleven (11) tetraploidal chromosomes. ''Salvia involucrata''〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=4076 )〕 and its cultivars 'Bethellii'〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=5348 )〕 and 'Boutin'〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=4077 )〕 have gained the Royal Horticultural Society's Award of Garden Merit. 'Bethellii' was introduced in 1881 for its compact habit and large ovoid leaves. Another cultivar, common in France and Britain, is 'Deschamsiana', which was chosen in 1869 for the bright rose color of its inflated flowers. Cultivars that have found popularity in the U.S. include 'Hidalgo', 'El Butano', and 'El Cielo'—each named after the place in Mexico where it was collected.〔 ''Salvia involucrata'' breeds freely with other ''Salvia'' species, resulting in many hybrids at University of California Botanical Garden that show hybrid vigor. Some of these hybrid plants are known to grow up to six feet high, with a longer blooming period. 'Mulberry Jam', a smaller hybrid with upright growth, stronger stems, and continuous blooming from summer to frost was introduced in 1995 by Betsy Clebsch.〔 As a garden plant, it prefers good drainage, half to three-quarter a day of sun, humus enriched soil, and deep watering once a week. Propagation is by division or cuttings, which can be rooted in late summer or early autumn. The plant will grow back from the ground after light freezes. In early spring, it should be pruned back to active nodes a few inches from the crown.〔 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「Salvia involucrata」の詳細全文を読む スポンサード リンク
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