Flora of North America species comparison

erect, simple or branched, 2.5–10 dm, glabrous;

rhizomes thickened; elongate bulblets developing in distal axils in late season.

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

rhizomes slender;

bulblets absent.

usually opposite or subopposite (rarely alternate);

petiole absent or 0.1–1 cm, eciliolate;

blade elliptic-lanceolate to lanceolate, 3–10 × 0.5–2 cm, base cuneate, decurrent, margins entire, slightly revolute, eciliolate, apex acute to acuminate, surfaces punctate, glabrous;

venation single-veined to obscurely pinnate.

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.

terminal, racemes, 10–30 cm.

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

0.5–2 cm, glabrous.

0.5–2.8 cm, glabrous.

sepals 5, calyx streaked with black resin canals, 2–6 mm, minutely stipitate-glandular on margins (or glabrous), lobes ovate to lanceolate, margins thin;

petals 5, corolla yellow with reddish base, streaked with black or maroon resin canals, rotate, 5–7.8 mm, lobes with margins entire, apex acute to rounded, stipitate-glandular adaxially;

filaments connate 0.4–1 mm, shorter than corolla;

staminodes absent.

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.

3–3.5 mm, dark-punctate, glabrous.

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

= 84.

= 34.