Tragia urens
Tragia leptophylla
wavy-leaf noseburn
fine-leaf noseburn
erect, green to purple-green, apex never flexuous.
erect, brownish red to maroon-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 0.5–2 mm;
blade acicular to narrowly oblong, 1–6 × 0.2–0.6 cm, base acute to subcuneate, margins usually entire, sometimes serrulate, apex acute to obtuse.
terminal (often appearing leaf opposed), glands absent, staminate flowers 3–45 per raceme; staminate bracts 1–1.5 mm.
terminal (appearing leaf opposed) or axillary, glands absent, staminate flowers 2–3(–5) per raceme; staminate bracts 2–2.5 mm.
staminate 1.3–2 mm, persistent base 0.3–0.6 mm; pistillate 3.5–4 mm in fruit.
staminate 1–2 mm, persistent base 0.5–0.8 mm, pistillate 2–3 mm in fruit.
sepals 4–5, green, 1–1.5 mm;
stamens 2, filaments 0.2–0.4 mm.
sepals 3–4(–5), green, 1–2.5 mm;
stamens 3–4, filaments 1.2–1.4 mm, connate basally.
sepals linear, 1–1.8 mm;
styles connate 1/4–1/3 length;
stigmas undulate.
sepals lanceolate, 1.5–2 mm;
styles connate 1/5 length;
stigmas undulate to slightly papillate.
7–8 mm wide.
4–5 mm wide.
brown with tan streaks, 3–4 mm.
mottled dark olive brown, 2.5–3 mm.
= 44.
Tragia urens
Tragia leptophylla
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 leptophylla is known from the western part of the Edwards Plateau region in west-central Texas. K. I. Miller and G. L. Webster (1967) did not recognize T. leptophylla as a distinct species; they treated it as a synonym of T. ramosa. Tragia leptophylla differs from T. ramosa in its less branching habit, dark reddish stems, usually entire leaf blade margins, fewer staminate flowers per inflorescence, and riparian limestone cobble habitat.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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