This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(gaping mouth, in allusion to the shape of the corolla). Scrophulariacese. African herbs or sub-shrubs sometimes planted in greenhouses, or in the open in mild climates.
Leaves simple, mostly opposite: flowers axillary or terminal-racemose, showy; stamens attached to the throat of the corolla, more or less exserted; style filiform and club-shaped, and obtuse at the apex; corolla tubular, swollen in the throat, with a 5-lobed spreading limb: fruit a caps, with numerous seeds. - Recent authorities combine this genus with Sutera, which, in the enlarged sense, comprises more than 190 species in Africa and the Canary Isls. Chamostoma, as separately limited, has 25-30 S. African plants with white, yellow or reddish flowers axillary or in terminal racemes, leaves usually opposite, mostly dentate, 4 didynamous stamens which are exserted rather than included as in typical Sutera and the top of the style club-shaped and stigma obtuse rather than 2-lobed.
Benth. (Sutera brachiata, Roth). Small perennial, sometimes an under-shrub, with opposite, oval or oblong, toothed leaves, and blush-white or rosy white star-like flowers 1/4in. across, in dense clusters. S. Africa J. H. III. 33:636. - An old and deserving greenhouse or pot-plant, but rarely seen at present. It blooms almost continuously, the flowers sometimes hiding the foliage. Prop, by seeds or cuttings, either in fall or spring. Begins to bloom when 4-6 in. high. To be recommended for windows, and for summer vases. It has been listed as Schoenostoma hispidum. In S. Calif., it is a half-hardy dwarf shrub (12 to 20 in. high and withstanding 4-6 degrees of frost), recommended for edgings. n. Taylor†