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Leaves from the root or alternate, leathery, entire or with a few sharp tooth: fls. small, blue, in dense heads; calyx 5-lobed, sometimes obscurely 2-lipped; corolla-tube usually short, broad at the throat, the lobes oblique or unequal; stamens 4, didynamous, attached at the throat: fr. small, included in the calvx. —About a dozen species from the Old World. Probably the commonest and best species is G. tricosantha, which thrives at the front of well-drained borders, but is particularly showy in the rockery. For this and G. vulgaris and its forms, rather moist but well-drained soil and partial shade are advised. Prop, by division or seed.
 
Leaves from the root or alternate, leathery, entire or with a few sharp tooth: fls. small, blue, in dense heads; calyx 5-lobed, sometimes obscurely 2-lipped; corolla-tube usually short, broad at the throat, the lobes oblique or unequal; stamens 4, didynamous, attached at the throat: fr. small, included in the calvx. —About a dozen species from the Old World. Probably the commonest and best species is G. tricosantha, which thrives at the front of well-drained borders, but is particularly showy in the rockery. For this and G. vulgaris and its forms, rather moist but well-drained soil and partial shade are advised. Prop, by division or seed.
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G. alypum, Linn. Lvs. obovate-oblong, mucronate or 3-toothed at apex. Medit. regions.—Cult, years ago in S. Calif, by Franceschi. who says it is covered with fls. all winter; but not now in cult. Also cult, abroad under glass.—G. bellidifolia, Saliab. =G. spinosa.— G. spinosa. Linn. One ft. and more: radical lvs. obovate, attenuate into petiole. 3-7-toothed at apex; st.-lvs. lanceolate and sessile: head larger than in G. vulgaris; calyx 2-lipped, the tube ciliate and throat barbed; upper lip of corolla 2-parted, lower 3-parted. Spain.
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N. Taylor.
 
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