Tragia urens |
Tragia saxicola |
|
---|---|---|
wavy-leaf noseburn |
Florida keys noseburn |
|
Habit | Herbs or subshrubs, 2–5 dm. | Herbs or subshrubs, 1.2–3.5 dm. |
Stems | erect, green to purple-green, apex never flexuous. |
erect, green, apex flexuous. |
Leaves | petiole 0–2 mm; blade usually oblanceolate to linear, sometime elliptic, 2–8(–10) × 0.2–1.4 cm, base acute, margins entire or irregularly and shallowly sinuate, 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 absent, staminate flowers 3–45 per raceme; staminate bracts 1–1.5 mm. |
terminal (often appearing leaf opposed), glands absent, staminate flowers 12–20 per raceme; staminate bracts 0.8–1.2 mm. |
Pedicels | staminate 1.3–2 mm, persistent base 0.3–0.6 mm; pistillate 3.5–4 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 4–5, green, 1–1.5 mm; stamens 2, filaments 0.2–0.4 mm. |
sepals 3–4, green, 1–1.5 mm; stamens 3–4, filaments 0.4–0.6 mm. |
Pistillate flowers | sepals linear, 1–1.8 mm; styles connate 1/4–1/3 length; stigmas undulate. |
sepals lanceolate, 1.5–3 mm; styles connate 1/4–1/3 length; stigmas undulate. |
Capsules | 7–8 mm wide. |
6–7 mm wide. |
Seeds | brown with tan streaks, 3–4 mm. |
dark brown with light brown streaks, 2.4–3 mm. |
2n | = 44. |
|
Tragia urens |
Tragia saxicola |
|
Phenology | Flowering late spring; fruiting summer–fall. | Flowering late winter–fall; fruiting spring–early winter. |
Habitat | Dry, sandy pinelands, oak barrens, disturbed fields. | Dry pinelands and hammocks on limestone substrates. |
Elevation | 0–300 m. (0–1000 ft.) | 0–10 m. (0–0 ft.) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; VA
|
FL |
Discussion | Tragia urens is widespread from the Gulf Coast to the mid-Atlantic states and displays considerable foliar variation. Leaf blades that usually are oblanceolate to linear with entire to sinuate margins, two stamens, and sparse, stinging hairs are diagnostic traits for this species. (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. 190. | FNA vol. 12, p. 189. |
Parent taxa | Euphorbiaceae > Tragia | Euphorbiaceae > Tragia |
Sibling taxa | ||
Synonyms | Leptobotrys discolor, T. discolor, T. discolor var. linearis, T. discolor var. subovalis, T. linearifolia, T. urens var. innocua, T. urens var. lanceolata, T. urens var. linearis, T. urens var. subovalis | |
Name authority | Linnaeus: Sp. Pl. ed. 2, 2: 1391. (1763) | Small: Fl. S.E. U.S. 702, 1333. (1903) |
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