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FNA | Family List | FNA Vol. 12 | Euphorbiaceae

12a. Croton glandulosus Linnaeus var. arenicola (Small) B. W. van Ee, P. E. Berry & Ginzbarg, Harvard Pap. Bot. 14: 49. 2009.

Croton arenicola Small, Bull. New York Bot. Gard. 3: 428. 1905

Plants 1–2 dm. Stems densely stellate-hairy, hairs appressed, radii equal. Leaves: petiole apical glands sessile, circular when dry, 0.2 mm diam.; blade 0.7–3.5 × 0.5–1.5 cm, length mostly 2 times width or less, firm-thick, marginal teeth rounded, both surfaces densely stellate-hairy; base obscurely 3-veined.

Flowering year-round. Beaches, old fields, disturbed sites, sandy waste places; 0–50 m; Fla.

Variety arenicola is restricted to Miami-Dade, Monroe, and Palm Beach counties. A. M. Ferguson (1901) treated a collection of this variety as Croton betulinus Vahl, but that is a distinct, perennial species from the West Indies.


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