Croton fruticulosus |
Croton lindheimerianus |
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bush croton, encinilla, hierba loca, shrubby croton |
three-seed croton |
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Habit | Shrubs, 2–10 dm, monoecious. | Herbs, annual, 1–5 dm, monoecious. | ||||
Stems | much branched distally, stellate-hairy. |
dichotomously branched, densely stellate-tomentose. |
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Leaves | not clustered; stipules rudimentary or absent; petiole 0.4–1(–1.5) cm, 1/8–1/5 blade length, glands absent at apex; blade ovate to ovate-lanceolate, 2–8 × 2–4 cm, base truncate to cordate, margins serrulate, often slightly undulate, apex attenuate, acute, abaxial surface pale green, stellate-hairy, adaxial surface darker green, puberulent. |
sometimes clustered near inflorescences; stipules rudimentary; petiole 0.5–3 cm, glands absent at apex; blade lanceolate to suborbiculate, 1–5(–8) × 0.8–2.8(–3.5) cm, base rounded, margins entire, apex rounded to acute, abaxial surface pale green, stellate-hairy, adaxial surface darker green, sparsely stellate-hairy. |
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Inflorescences | bisexual, racemes, 3–12 cm, staminate flowers 10–20, pistillate flowers 2–5. |
bisexual, racemes, 1–3 cm, not appearing brown-dotted, no stellate hairs with brown centers, staminate flowers 3–8, pistillate flowers 1–3. |
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Pedicels | staminate 2.5–4 mm, pistillate 0–0.5 mm. |
staminate 2–3 mm, pistillate 1–5(–15) mm. |
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Staminate flowers | sepals 5, 0.8–1.2 mm, abaxial surface stellate-tomentose; petals 5, oblanceolate to spatulate, 2 mm, abaxial surface glabrous except margins densely fimbrillate-villous; stamens 9–16. |
sepals (4–)5, 1.5–2 mm, abaxial surface stellate-hairy; petals 5, linear-oblong-lanceolate, 1–1.5 mm, abaxial surface glabrous except margins villous; stamens 7–9(–12). |
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Pistillate flowers | sepals 5, equal, 2.2 mm, margins entire, apex incurved, abaxial surface stellate-hairy; petals 0; ovary 3-locular; styles 3, 3–4.5 mm, 2-fid to base, terminal segments 6. |
sepals 5–6, equal, 3 mm, margins entire, apex incurved, abaxial surface stellate-hairy; petals 0; ovary 3-locular; styles 3, 2–3 mm, 2-fid to base, terminal segments 6. |
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Capsules | 5–6 mm diam., smooth; columella apex with 3 rounded, inflated lobes. |
4–5 × 4–4.5 mm, smooth; columella apex with 3 sharp projections. |
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Seeds | 4–5 × 3.2–3.8 mm, shiny. |
3.2–3.6 × 1.5 mm, shiny. |
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Croton fruticulosus |
Croton lindheimerianus |
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Phenology | Flowering May–Dec. | |||||
Habitat | Limestone or basalt hills. | |||||
Elevation | 100–1700 m. (300–5600 ft.) | |||||
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Nuevo León, San Luis Potosí, Tamaulipas)
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AR; AZ; IL; IN; KS; LA; MO; NC; NM; OK; SC; TX; n Mexico
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Discussion | Croton fruticulosus is known in the flora area from southeastern Arizona through southern New Mexico and trans-Pecos Texas to the Edwards Plateau. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). Croton lindheimerianus is one of the bifid-styled species in sect. Heptallon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 12, p. 214. | FNA vol. 12, p. 219. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Engelmann ex Torrey: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 194. (1859) — (as fruticulosum) | Scheele: Linnaea 25: 580. (1852) | ||||
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