Flora of North America species comparison

erect, simple or sometimes branched distally, 1–10 dm, glabrous (rarely sparsely stipitate-glandular or pubescent near nodes);

rhizomes slender;

bulblets absent.

erect, simple to branched distally, 4–10 dm, usually glabrous (rarely stipitate-glandular at nodes);

rhizomes slender to thickened;

bulblets absent.

opposite or whorled near stem apex, dimorphic;

distal petioles absent or 0.1–0.7 cm, proximal 0.3–2(–3.5) cm, ciliate proximally, cilia 0.3–1.2(–2) mm;

distal blades narrowly elliptic to elliptic-lanceolate or linear-lanceolate, proximal blades broadly elliptic or lanceolate, distal 3–18 × 0.2–1.6 cm, proximal 2–5 × 0.6–1.8 cm, bases of distal leaves cuneate, decurrent, bases of proximal leaves rounded to obtuse or cuneate, decurrent, margins entire (rarely serrulate), plane, ciliolate proximally, apex rounded to acute or acuminate, surfaces not punctate, glabrous;

venation pinnate-arcuate.

whorled or opposite;

petiole absent or 0.1–3 cm, eciliate;

blade elliptic to lanceolate or ovate, 4–8 × 1.5–2.5 cm, base cuneate, decurrent, margins entire, slightly revolute, eciliolate, apex acute to acuminate, surfaces punctate, glabrous;

venation single-veined to obscurely pinnate.

axillary, solitary flowers.

terminal, racemes (sometimes leafy), 20–35 cm.

1–5 cm, glabrous to sparsely stipitate-glandular (rarely pubescent).

1.5–3 cm, glabrous or sparsely stipitate-glandular.

sepals 5, calyx not streaked, 3.5–8(–10) mm, glabrous or stipitate-glandular, lobes narrowly lanceolate to ovate, margins thin;

petals 5, corolla yellow, sometimes with slightly reddish base, not streaked, rotate, 4–10 mm, lobes with margins slightly erose apically, apex apiculate or mucronate, sparsely stipitate-glandular adaxially;

filaments distinct or nearly so, shorter than corolla;

staminodes 0.7–1 mm.

sepals 5, calyx streaked with black resin canals, 3–7 mm, stipitate-glandular, especially near margins, lobes lanceolate, margins thin;

petals 5, corolla yellow, streaked with reddish or reddish-black resin canals, rotate, 5–8 mm, lobes with margins entire, apex rounded to obtuse, stipitate-glandular abaxially;

filaments connate 1.7–3 mm, shorter than corolla;

staminodes absent.

2–5 mm, usually not punctate, glabrous or slightly stipitate-glandular distally.

3–5 mm, dark-punctate, glabrous.

= 34.

= 84.