Croton michauxii var. elliptica

(Willdenow) B. W. van Ee & P. E. Berry

Harvard Pap. Bot. 14: 68. 2009.

Common names: Elliptic-leaf rushfoil Willdenow’s croton
Endemic
Basionym: Crotonopsis elliptica Willdenow Sp. Pl. 4: 380. 1805
Synonyms: Croton willdenowii G. L. Webster Leptemon ellipticum (Wildenow) Rafinesque
Treatment appears in FNA Volume 12. Treatment on page 220.
Revision as of 18:56, 16 December 2019 by FNA>Volume Importer

Leaf blades lanceolate to ovate-lanceolate, 1.5–4 × 0.1–0.4(–1.5) cm; abaxial surface (midstem leaves) hairs with radii separate less than 1/2 length, adaxial surface hairs often slightly raised, overlapping near midvein, radii usually 1–3. Inflorescences usually less than 1 cm, achenes 1–2, crowded at base (appearing sessile in axil of subtending leaf). Staminate flowers usually less than 1 mm diam. Achenes sparsely stellate-lepidote, hairs appressed, radii joined most or all of length, umbos usually blunt, rarely sharp.


Phenology: Flowering Jun–Oct.
Habitat: Sandstone and granitic outcrops (glades), disturbed sandy soils, forest openings, eroded slopes.
Elevation: 0–300 m.

Distribution

V12 241-distribution-map.jpg

Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Miss., Mo., N.J., N.C., Okla., Pa., S.C., Tenn., Tex., Va.

Discussion

Selected References

None.

Lower Taxa

None.
Benjamin W. van Ee +  and Paul E. Berry +
(Willdenow) B. W. van Ee & P. E. Berry +
Crotonopsis elliptica +
Elliptic-leaf rushfoil +  and Willdenow’s croton +
Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.J. +, N.C. +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +  and Va. +
0–300 m. +
Sandstone and granitic outcrops (glades), disturbed sandy soils, forest openings, eroded slopes. +
Flowering Jun–Oct. +
Harvard Pap. Bot. +
Croton willdenowii +  and Leptemon ellipticum +
Croton michauxii var. elliptica +
Croton michauxii +
variety +