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 (rarely reclining), usually branching proximally, 2.5–10 dm, glabrous;

rhizomes 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.

opposite (distal sometimes whorled);

petiole (0.2–)0.6–4 cm, ciliate proximally, cilia 0.2–1 mm;

blade elliptic-lanceolate to lanceolate or linear-lanceolate (sometimes ± folded along midvein), 2–18 × 0.5–3 cm, base rounded to cuneate, decurrent, margins entire, plane, eciliolate or ciliolate proximally, apex acute to acuminate, surfaces not punctate (sometimes with small dark pits, especially apically, but these are not the resinous streaks referred to here as punctations), glabrous;

venation pinnate-arcuate to obscurely pinnate to apparently single-veined (lateral veins obscure), often on same plant.

axillary, solitary flowers.

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

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

1–4.2 cm, glabrous to 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, 4–8 mm, glabrous, lobes broadly lanceolate to ovate, margins thin;

petals 5, corolla yellow, not streaked, rotate, 5–12 mm, lobes with margins sometimes slightly erose distally, apex apiculate, stipitate-glandular adaxially;

filaments distinct or nearly so, shorter than corolla;

staminodes 0.5–1.7 mm.

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

4–6.5 mm, not punctate or only slightly reddish-punctate, glabrous.

= 34.

= 34.