Croton alabamensis |
Croton soliman |
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Alabama croton |
Soliman's croton |
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Habit | Shrubs, 5–35 dm, monoecious. | Shrubs, 5–8 dm, monoecious. | ||||
Stems | usually well branched distally, lepidote. |
sparsely branched distally, sparsely stellate-hairy. |
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Leaves | clustered at branch tips; stipules absent; petiole 0.6–2 cm, glands absent at apex; blade elliptic, ovate, or oblong, 3–10 × 1.5–5 cm, base rounded to obtuse, margins entire, sometimes ± undulate, apex acute, rounded, or emarginate, abaxial surface silvery or coppery, densely lepidote, adaxial surface green, sparsely lepidote. |
not clustered; stipules linear, (0–)1–2 mm, sometimes short stipitate-glandular; petiole 1–2 cm, 2/5–1/2 leaf blade length, glands absent at apex; blade ovate, 2–5 × 1.5–2.5 cm, base rounded-cuneate, margins entire, with scattered glandular-capitate processes 1 mm, usually denser at base, apex acute to acuminate, abaxial surface green, glabrous or sparsely stellate-hairy, usually along margin, adaxial surface slightly darker green, glabrous. |
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Inflorescences | bisexual or unisexual, racemes, 2–4.5 cm, staminate flowers 0–15, pistillate flowers 0–10. |
bisexual, racemes, 2–4 cm, staminate flowers 10–30, pistillate flowers 3–6. |
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Pedicels | staminate 2.2–4 mm, pistillate 2.2–7.5 mm (7–11 mm in fruit). |
staminate 1–5 mm, pistillate 2–5 mm. |
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Staminate flowers | sepals 5, 1.1–2.9 mm, abaxial surface lepidote; petals 5, oblong-ovate, 2–3.1 mm, abaxial surface glabrous except margins stellate-ciliate; stamens 10–22. |
sepals 5, 0.8–1 mm, abaxial surface sparsely stellate-hairy; petals 5, spatulate, 1–1.3 mm, abaxial surface glabrous except margins ciliate basally; stamens 15–20. |
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Pistillate flowers | sepals 5, equal, 2–4.5 mm, margins entire, apex incurved, abaxial surface lepidote; petals 5, pale green, ovate, 2–3.5 mm; ovary 3-locular; styles 3, 2–5 mm, usually unbranched, rarely 2-fid, terminal segments 3 (or 6). |
sepals 5, unequal, 5–6 mm, margins entire, apex straight to slightly incurved, abaxial surface glabrous or with a few stellate hairs; petals 0 or 5, white, linear, 2.5–3.5 mm; ovary 3-locular; styles 3, 3–4 mm, 4-fid, terminal segments 12. |
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Capsules | 1.6–2.5 × 2–3 mm, smooth; columella 3-angled. |
6 × 5–6 mm, smooth; columella apex with 3 rounded, inflated lobes. |
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Seeds | 6.7–8 × 5.2–6 mm, shiny. |
4–5 × 3–4 mm, shiny. |
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Croton alabamensis |
Croton soliman |
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Phenology | Flowering May–Jul. | |||||
Habitat | Thickets, low ridges. | |||||
Elevation | 0–50 m. (0–200 ft.) | |||||
Distribution |
AL; TX
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TX; e Mexico; s Mexico |
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Discussion | Varieties 2 (2 in the flora). B. W. van Ee et al. (2006) examined populations of Croton alabamensis using DNA sequence and AFLP data, and their results supported the recognition of two varieties and an isolated position in the genus. Buds develop in the summer and fall for the following spring's flowers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Croton soliman is most similar to C. humilis. In the flora area, C. soliman is found only in Cameron County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 12, p. 210. | FNA vol. 12, p. 223. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | E. A. Smith ex Chapman: Fl. South. U.S. ed. 2, 648. (1883) | Chamisso & Schlechtendal: Linnaea 6: 361. (1831) | ||||
Web links |