Tragia urens
Tragia urticifolia
wavy-leaf noseburn
nettle-leaf noseburn
erect, green to purple-green, apex never flexuous.
erect, green, apex never flexuous.
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 3–15 mm;
blade triangular-lanceolate, 2.7–6.7 × 1–3 cm, base truncate to cordate, margins serrate, apex acute.
terminal (often appearing leaf opposed), glands absent, staminate flowers 3–45 per raceme; staminate bracts 1–1.5 mm.
terminal (appearing leaf opposed), glands absent, staminate flowers 11–40 per raceme, evenly distributed; staminate bracts 1–1.5 mm.
staminate 1.3–2 mm, persistent base 0.3–0.6 mm; pistillate 3.5–4 mm in fruit.
staminate 1.5–2 mm, persistent base 1–1.8 mm, longer than subtending bract; pistillate 3–4 mm in fruit.
sepals 4–5, green, 1–1.5 mm;
stamens 2, filaments 0.2–0.4 mm.
sepals 3, green, 1.2–2.1 mm;
stamens 3, filaments 0.3–0.8 mm.
sepals linear, 1–1.8 mm;
styles connate 1/4–1/3 length;
stigmas undulate.
sepals lanceolate-ovate, 1.3–2.3 mm;
styles connate 1/3 length;
stigmas papillate.
7–8 mm wide.
7–8 mm wide.
brown with tan streaks, 3–4 mm.
dark brown, 3–4 mm.
= 44.
= 44.
Tragia urens
Tragia urticifolia
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.)
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.)
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