Tragia ramosa |
Tragia saxicola |
|
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branch noseburn, branch or desert or common noseburn, desert noseburn, desert tragia |
Florida keys noseburn |
|
Habit | Subshrubs, 1.2–5 dm. | Herbs or subshrubs, 1.2–3.5 dm. |
Stems | erect to trailing, dark green to light green, apex rarely flexuous. |
erect, green, apex flexuous. |
Leaves | petiole 2–20 mm; blade linear-lanceolate to narrowly ovate, 1–4 × 0.5–2 cm, base truncate to weakly cordate, margins serrate, apex acute. |
petiole 5–13 mm; blade suborbiculate to ovate, 1.2–3 × 1–2.3 cm, base subcordate, margins dentate to serrate, apex acute. |
Inflorescences | terminal (often appearing leaf opposed), glands few, sessile, staminate flowers 2–20 per raceme; staminate bracts 1.5–2 mm. |
terminal (often appearing leaf opposed), glands absent, staminate flowers 12–20 per raceme; staminate bracts 0.8–1.2 mm. |
Pedicels | staminate 0.7–2 mm, persistent base 0.4–1.5 mm; pistillate 2–2.5 mm in fruit. |
staminate 1.5–1.9 mm, persistent base 0.5–0.7 mm; pistillate 3.2–3.7 mm in fruit. |
Staminate flowers | sepals 3–4, green, 1–2.2 mm; stamens 3–6(–10), filaments 0.3–1 mm. |
sepals 3–4, green, 1–1.5 mm; stamens 3–4, filaments 0.4–0.6 mm. |
Pistillate flowers | sepals lanceolate, 0.8–2.5 mm; styles connate 1/3–1/2 length, long-exserted; stigmas smooth to undulate. |
sepals lanceolate, 1.5–3 mm; styles connate 1/4–1/3 length; stigmas undulate. |
Capsules | 6–8 mm wide. |
6–7 mm wide. |
Seeds | dark brown, 2.5–3.5 mm. |
dark brown with light brown streaks, 2.4–3 mm. |
2n | = 44. |
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Tragia ramosa |
Tragia saxicola |
|
Phenology | Flowering spring–fall; fruiting late spring–fall. | Flowering late winter–fall; fruiting spring–early winter. |
Habitat | Mesquite, desert scrub, pine-juniper, oak woodlands. | Dry pinelands and hammocks on limestone substrates. |
Elevation | 200–2800 m. (700–9200 ft.) | 0–10 m. (0–0 ft.) |
Distribution |
AR; AZ; CA; CO; KS; MO; NE; NM; NV; TX; UT; Mexico (Baja California, Chihuahua, Coahuila, Nuevo León, Sonora, Tamaulipas)
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FL |
Discussion | Tragia ramosa is a variable species showing much environmental plasticity. Collections from the western United States and western Mexico have much broader leaves than those from Texas and Nuevo León, and were previously referred to as T. stylaris. Smooth stigmatic surfaces, three to six (rarely to ten) stamens, and narrow apical leaves are characters consistent with T. ramosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Tragia saxicola occurs in south Florida and the Florida Keys. Although similar to T. smallii in its suborbiculate leaf blades, it differs in having longer petioles and smaller seeds. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 189. | FNA vol. 12, p. 189. |
Parent taxa | Euphorbiaceae > Tragia | Euphorbiaceae > Tragia |
Sibling taxa | ||
Synonyms | T. angustifolia, T. nepetifolia var. angustifolia, T. nepetifolia var. ramosa, T. ramosa var. latifolia, T. stylaris, T. stylaris var. angustifolia, T. stylaris var. latifolia | |
Name authority | Torrey: Ann. Lyceum Nat. Hist. New York 2: 245. (1827) | Small: Fl. S.E. U.S. 702, 1333. (1903) |
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