Flora of North America species comparison

often flexuous, 30–100 cm;

internodes pilose to glabrescent.

2-ranked;

blade lanceolate-elliptic to ovate-lanceolate, 2.5–5 × 1–2 cm (distal leaf blades wider or narrower than sheaths when sheaths opened, flattened), margins ciliolate, apex acute, glabrous.

spirally arranged, at least proximal ones distinctly petiolate;

blade dark green, lanceolate-oblong to lanceolate-elliptic or lanceolate, 6–30 × (0.4–)1–6.5 cm (distal leaf blades wider than sheaths when sheaths opened, flattened), apex acuminate, glabrous to puberulent.

terminal, becoming leaf-opposed, sometimes axillary from distalmost leaf axil, 1–2 cyme pairs per stem;

bracts mostly foliaceous, occasionally reduced.

terminal, usually also axillary at distal nodes, axillary inflorescences sessile or variously pedunculate;

bracts foliaceous.

distinctly pedicillate;

pedicels 1–1.5 cm, glandular-pilose;

sepals 5–7 mm, midrib pilose with eglandular hairs;

petals distinct, white, not clawed, 8–9 mm;

stamens free;

filaments white, densely bearded with white hairs.

distinctly pedicillate;

pedicels 1–1.7 cm, pilose to glabrous;

sepals 4–10 mm, puberulent with glandular, eglandular, or mixture of glandular, eglandular hairs, occasionally glabrous;

petals distinct, light to dark blue, rarely white, broadly ovate, not clawed, 10–15 mm;

stamens free;

filaments bearded.

4–6 mm.

2–3 mm.

= 12, 24.