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, usually simple, 1.5–10 dm, sparsely stipitate-glandular and pubescent;

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.

usually whorled;

petiole 0.5–1.6 cm, eciliate;

blade lanceolate or ovate, 5–10 × 1–4 cm, base rounded to obtuse, decurrent, margins entire, plane, pubescent, apex acute, surfaces reddish-punctate at least marginally or apically, stipitate-glandular and densely pubescent;

venation pinnate.

axillary, solitary flowers.

axillary, solitary flowers or verticils.

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

1–3.5 cm, pubescent and sometimes also 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 not streaked, 5–8 mm, stipitate-glandular at least apically, lobes narrowly lanceolate, margins thin;

petals 5, corolla yellow, not streaked, rotate, 12–19.5 mm, lobes with margins entire, apex acute to rounded, stipitate-glandular marginally and sometimes also distally;

filaments connate 2–2.5 mm, shorter than corolla;

staminodes absent.

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

4–5.5 mm, dark reddish-punctate, glabrous.

= 34.

= 30.