Crossandra

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Read about Crossandra in the Standard Cyclopedia of Horticulture 

Crossandra(Greek, fringed anthers). Acanthaceae. Warmhouse evergreen shrubs of minor importance.

Upright, with entire or somewhat toothed, often verticillate Lvs., glabrous, or the infl. hairy: fls. in dense sessile spikes, red or yellow, with prominent bracts; corolla cylindrical, more or less curved, somewhat enlarged at the throat, with a flat or spreading oblique limb; stamens 4, in pairs.—Perhaps 20-25 species from India, Trop. Air, and Madagascar. The one commonly in the trade has handsome 4-eided spikes of scarlet-orange fls.; perianth has 5 segms., the 2 upper ones being smaller; stamens 4, of 2 lengths: caps, oblong, acute, 4-seeded. It is cult. S. outdoors to a slight extent, and also rarely in northern greenhouses. Should be grown in rich loam, peat or leaf-mold, and sand. Prop, by cuttings in sand over bottom heat, preferably under a bell-jar.

C. flava, Hook. Unbranched shrub, 6-8 in. high: at. green, glabrous: Lvs. opposite, close together, large for the size of the plant, 6 in. long, obovate-lanceolate, dark green above, paler beneath, wavy, more obtuse than in the above; lower Lvs. stalked, upper ones sessile: spike 4-sided, spiny; fls. yellow; tube much exserted, jointed. Trop. W. Afr. B.M. 4710.—C. guineensis, Nees. Height 2-6 in.: st. light red, rusty pubescent: Lvs. 2-4 pairs, 3-5 in. long, elliptic, green above, with golden netted nerves, reddish beneath: spike solitary, terminal, slender, 3-5 in. high; fls. numerous, small, pale lilac, with 2 darker spots on the 2 smallest seems, and a white eye. Guinea. B.M. 6346.—A handsome foliage plant. N. Taylor.


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