Flora of North America species comparison

erect, simple or branched, (1.2–)2–10 dm, glabrous;

rhizomes slender;

bulblets absent.

opposite;

petiole 0.1–0.5(–0.9) cm, ciliate at very base near nodes, cilia 0.1–0.8 mm;

blade linear to narrowly lanceolate, 3.4–9 × 0.2–0.6 cm, base cuneate, decurrent, margins entire, revolute, eciliolate, apex acute to obtuse, surfaces not punctate, glabrous;

venation single-veined or obscurely pinnate.

axillary in distal leaves, solitary flowers (or verticils).

0.5–2.8 cm, glabrous.

sepals 5, calyx not streaked, 3.5–6 mm, glabrous, lobes lanceolate, margins thickened;

petals 5, corolla yellow, sparsely streaked with brownish-violet (sometimes obscure) resin canals, rotate, 7–13 mm, lobes with margins entire (sometimes slightly erose distally), glabrous, apex apiculate, stipitate-glandular adaxially;

filaments weakly connate at very base, shorter than corolla;

staminodes 0.6–0.9 mm.

3.5–5 mm, not punctate, glabrous (rarely sparsely stipitate-glandular).

= 34.