Opuntia pusilla Salm-Dyck (redirected from: Opuntia tracyi)
Family: Cactaceae
[Cactus pusillus DC.,  more]
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Shrubs, creeping, often forming mats, trailing, to 0.1 m. Stem segments easily detached, green, purplish red under stress, flattened, elliptic to linear, sometimes subcylindric (to subspheric), 2.5-5(-8) × 1.2-2.5 cm, tuberculate, glabrous; areoles 2-5 per diagonal row across midstem segment, subcircular, 2-3 mm diam.; wool tan to gray. Spines (0-)1-2(-4) per areole, in distal 3/4 of stem segment areoles (to nearly spineless), porrect to spreading, red-brown, aging gray, stout, straight, terete, to 30 mm, strongly barbed. Glochids in crescent at adaxial edge of areole, pale yellow, aging brown, to 3 mm, longest at areole apex. Flowers: inner tepals yellow throughout, 20-30 mm; filaments and anthers yellow; style and stigma lobes white. Fruits green becoming red-purple at late maturity, barrel-shaped, 18-30 × 12-20 mm, fleshy, glabrous, spineless; areoles 8-16. Seeds tan, subcircular, flattened, 4-6 mm diam.; girdle slightly protruding. 2n = 44. Flowering spring (Apr-May). Dune and pine scrub, primarily coastal, sandy openings, dunes, or rocky outcrops; 0-100 m; Ala., Fla., Ga. , Miss., N.C., S.C., Tex.
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Kathy M. Davis, University of Florida Herbarium  
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