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Annuals to 25 cm tall, diffuse, glabrous throughout except calyx. Stems purple, quadrangular, rooting at lower nodes, much branched. Leaves sessile, elliptic, 1-1.5 cm X 3-6 mm, decreasing in size upward, base rounded to cuneate, apex acute; veins 3-5, only primary vein conspicuous. Flowers axillary, solitary, in panicles. Pedicel slender, 1-2 cm. Calyx ca. 3 mm; lobes free to base, ca. 0.5 mm wide, hispidulous above, apex acuminate, obscurely 3-veined. Corolla white or pale blue, ca. 6.5 mm; lower lip 3-lobed; upper lip galeate, shallowly 2-lobed, lobes sharply pointed. Fertile stamens 2, posterior; staminodes 2, clavate, unappendaged, apex obtuse. Style ca. 3.5 mm. Capsule oblong, ca. 4 X 2.3 mm, rounded at both ends. Seeds ellipsoid.


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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden


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