Croton suaveolens |
Croton cortesianus |
|
---|---|---|
scented croton |
Cortez's croton, palillo |
|
Habit | Shrubs, 2–5 dm, monoecious. | Shrubs, 10–30 dm, dioecious. |
Stems | dichotomously much branched proximally, coarsely stellate-tomentose. |
di- or trichotomously branched, stellate-hairy, young stems often blackened by fungus. |
Leaves | often clustered near inflorescences; stipules each 5–10 glandular papillae, 0.2–0.5 mm; petiole 0.5–1.5 cm, 1/4 leaf blade length, glands absent at apex; blade obovate or ovate to broadly elliptic, 2–5.4 × 1–3.6 cm, base obtuse, margins entire, apex obtuse to acute, abaxial surface pale green to cream, adaxial surface darker green, both densely stellate-hairy. |
not clustered; stipules rudimentary; petiole 1–1.5 cm, 1/6–1/3 leaf blade length, glands absent at apex; blade narrowly obovate, oblong, elliptic, or lanceolate, 3–10 × 1–5 cm, mostly less than 3.5 times as long as wide, base subacute to rounded, margins minutely denticulate, apex acute or acuminate, abaxial surface light green, densely ochraceous stellate-hispid when young, pale stellate-hairy when mature, adaxial surface darker green, glabrous. |
Inflorescences | bisexual or staminate, racemes, 1–3 cm, staminate flowers 6–10, pistillate flowers 1–3. |
unisexual, racemes; staminate 7–20 cm, flowers 10–30; pistillate 1–5 cm, flowers 8–20(–30). |
Pedicels | staminate 3–5 mm, pistillate 1–2 mm. |
staminate 0–1 mm, pistillate 0–0.5 mm. |
Staminate flowers | sepals 5, 2 mm, abaxial surface stellate-hairy; petals 5, spatulate or obovate, 0.4–0.6 mm, abaxial surface densely villous at base and along margins, otherwise glabrous; stamens 12–16. |
sepals 5, 2.5 mm, abaxial surface stellate-hairy; petals 5, oblong, 3 mm, abaxial surface glabrous except margins ciliate basally; stamens 12–16. |
Pistillate flowers | sepals 5, equal, 2.5 mm, margins entire, apex straight to slightly incurved, abaxial surface stellate-hairy; petals glandular papillae; ovary 3-locular; styles 3, 4–6 mm, 2-fid to base, terminal segments 6. |
sepals 5, equal, 1–1.5 mm, margins entire, apex straight to slightly incurved, abaxial surface stellate-hispid; petals rudimentary; ovary 3-locular; styles 3, 4–5 mm, 2-fid, terminal segments 6. |
Capsules | 7–10 × 6–8 mm, smooth; columella apex with 3 rounded, inflated lobes. |
5–6 × 4.5–5.5 mm, smooth; columella apex with 3 rounded, inflated lobes. |
Seeds | 5.5–7 × 4–5 mm, shiny. |
4–5 × 3–3.5 mm, shiny (with silvery sheen). |
2n | = 20. |
|
Croton suaveolens |
Croton cortesianus |
|
Phenology | Flowering Apr–Nov. | Flowering Feb–Oct, possibly year-round. |
Habitat | Rocky slopes, foothills. | Scrub forests. |
Elevation | 1500–2000 m. (4900–6600 ft.) | 0–50 m. (0–200 ft.) |
Distribution |
TX; Mexico (Coahuila, Chihuahua, Nuevo León) |
TX; e Mexico; se Mexico; Central America |
Discussion | Croton suaveolens is found in the flora area only in trans-Pecos Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Croton cortesianus is known in the flora area only from Cameron, Hidalgo, and Starr counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 224. | FNA vol. 12, p. 213. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | C. chichenensis, C. trichocarpus | |
Name authority | Torrey: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 194. (1859) | Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 2(fol.): 66; 2(qto.): 83. (1817) |
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