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