Tragia urticifolia |
Tragia urens |
|
---|---|---|
nettle-leaf noseburn |
wavy-leaf noseburn |
|
Habit | Herbs or subshrubs, 2–7 dm. | Herbs or subshrubs, 2–5 dm. |
Stems | erect, green, apex never flexuous. |
erect, green to purple-green, apex never flexuous. |
Leaves | petiole 3–15 mm; blade triangular-lanceolate, 2.7–6.7 × 1–3 cm, base truncate to cordate, margins serrate, apex acute. |
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. |
Inflorescences | terminal (appearing leaf opposed), glands absent, staminate flowers 11–40 per raceme, evenly distributed; staminate bracts 1–1.5 mm. |
terminal (often appearing leaf opposed), glands absent, staminate flowers 3–45 per raceme; staminate bracts 1–1.5 mm. |
Pedicels | staminate 1.5–2 mm, persistent base 1–1.8 mm, longer than subtending bract; pistillate 3–4 mm in fruit. |
staminate 1.3–2 mm, persistent base 0.3–0.6 mm; pistillate 3.5–4 mm in fruit. |
Staminate flowers | sepals 3, green, 1.2–2.1 mm; stamens 3, filaments 0.3–0.8 mm. |
sepals 4–5, green, 1–1.5 mm; stamens 2, filaments 0.2–0.4 mm. |
Pistillate flowers | sepals lanceolate-ovate, 1.3–2.3 mm; styles connate 1/3 length; stigmas papillate. |
sepals linear, 1–1.8 mm; styles connate 1/4–1/3 length; stigmas undulate. |
Capsules | 7–8 mm wide. |
7–8 mm wide. |
Seeds | dark brown, 3–4 mm. |
brown with tan streaks, 3–4 mm. |
2n | = 44. |
= 44. |
Tragia urticifolia |
Tragia urens |
|
Phenology | Flowering late spring–summer; fruiting summer–fall. | Flowering late spring; fruiting summer–fall. |
Habitat | Dry, sandy soils, open pine-oak woods, hardwoods, rock ledges, fields. | Dry, sandy pinelands, oak barrens, disturbed fields. |
Elevation | 10–600 m. (0–2000 ft.) | 0–300 m. (0–1000 ft.) |
Distribution |
AL; AR; FL; GA; LA; MS; NC; SC; TN; TX; VA
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AL; FL; GA; LA; MS; NC; SC; TX; VA
|
Discussion | Plants of Tragia urticifolia are easily distinguished from those of other non-glandular North American members of Tragia by the persistent bases of its staminate pedicels, which are long-extended beyond their subtending bracts. Although similar to T. betonicifolia, T. urticifolia has fewer stems, shorter pistillate sepals, inflorescences with fewer staminate flowers that are not distally clustered, and leaf blades with very light green abaxial surfaces. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 12, p. 191. | FNA vol. 12, p. 190. |
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 | Michaux: Fl. Bor.-Amer. 2: 176. (1803) | Linnaeus: Sp. Pl. ed. 2, 2: 1391. (1763) |
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