Tragia saxicola |
Tragia amblyodonta |
|
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Florida keys noseburn |
blunt-tooth noseburn, dog-tooth noseburn |
|
Habit | Herbs or subshrubs, 1.2–3.5 dm. | Subshrubs, 1.2–5 dm. |
Stems | erect, green, apex flexuous. |
erect to trailing, gray-green, apex often flexuous. |
Leaves | petiole 5–13 mm; blade suborbiculate to ovate, 1.2–3 × 1–2.3 cm, base subcordate, margins dentate to serrate, apex acute. |
petiole 4–20(–30) mm; blade usually triangular to subhastate, sometimes ovate, 1–4.5 × 0.8–3 cm, base cordate, hastate, or truncate, margins crenate to serrate, apex acute to obtuse. |
Inflorescences | terminal (often appearing leaf opposed), glands absent, staminate flowers 12–20 per raceme; staminate bracts 0.8–1.2 mm. |
terminal or axillary, glands absent, staminate flowers 5–16 per raceme; staminate bracts 0.9–2 mm. |
Pedicels | staminate 1.5–1.9 mm, persistent base 0.5–0.7 mm; pistillate 3.2–3.7 mm in fruit. |
staminate 0.7–1.2 mm, persistent base 0.2–0.8 mm; pistillate 1.5–4 mm in fruit. |
Staminate flowers | sepals 3–4, green, 1–1.5 mm; stamens 3–4, filaments 0.4–0.6 mm. |
sepals 3–4, green, 0.9–1.2 mm; stamens 3–4, filaments 0.2–0.7 mm. |
Pistillate flowers | sepals lanceolate, 1.5–3 mm; styles connate 1/4–1/3 length; stigmas undulate. |
sepals lanceolate, 1–2.5 mm; styles connate to 1/3 length, short-exserted; stigmas undulate to subpapillate. |
Capsules | 6–7 mm wide. |
7–8 mm wide. |
Seeds | dark brown with light brown streaks, 2.4–3 mm. |
brown with tan mottling, 2.5–3.5 mm. |
2n | = 110. |
|
Tragia saxicola |
Tragia amblyodonta |
|
Phenology | Flowering late winter–fall; fruiting spring–early winter. | Flowering spring–fall; fruiting summer–late fall. |
Habitat | Dry pinelands and hammocks on limestone substrates. | Dry, rocky, exposed slopes in xerophytic scrub. |
Elevation | 0–10 m. (0–0 ft.) | 10–1400 m. (0–4600 ft.) |
Distribution |
FL |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, Tamaulipas) |
Discussion | 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.) |
Tragia amblyodonta is easily distinguished from other members of Tragia by the combination of usually triangular to subhastate leaf blades, gray-green coloration, and painfully stinging hairs. Both stomata diameter and pollen grain size of T. amblyodonta are larger than in any other North American species of Tragia (K. I. Miller and G. L. Webster 1967). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 12, p. 189. | FNA vol. 12, p. 186. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. nepetifolia var. amblyodonta | |
Name authority | Small: Fl. S.E. U.S. 702, 1333. (1903) | (Müller Arg.) Pax & K. Hoffmann: in H. G. A. Engler, Pflanzenr. 68[IV,147]: 51. (1919) |
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