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FNA | Family List | FNA Vol. 12 | Euphorbiaceae

20a. Croton michauxii G. L. Webster var. michauxii
[E F]

Michaux’s croton, narrow-leaf rushfoil Michaux’s croton, narrow-leaf rushfoil

Crotonopsis abnormis Baillon; C. spinosa Nash

Leaf blades lanceolate-linear, 1.8–3.5 × 0.1–0.3 cm, abaxial surface (midstem leaves) hairs with radii separate 1/2+ length, adaxial surface hairs appressed, not overlapping, radii usually 5–8. Inflorescences 1–3 cm, achenes usually 3–6, ± laxly spaced (not appearing sessile in axil of subtending leaf). Staminate flowers usually greater than 1 mm diam. Achenes densely stellate-lepidote, hairs ± spreading, radii separate most of length, umbos usually sharp, sometimes rounded.

Flowering Jun–Oct. Deep sandy soils, forest openings, disturbed soils, coasts, riverine beaches; 0–100 m; Ala., Ark., Fla., Ga., Ill., Iowa, La., Miss., Mo., S.C., Tenn., Tex.


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