Flora of North America species comparison

usually secund racemes, rarely solitary flowers, 5–32 cm;

axis yellowish to orange or reddish.

nodding at anthesis, erect in fruit, finely hairy or glabrous, sometimes glandular-hairy.

sepals absent or 4–5, not similar to subtending bracts, spatulate to elliptic, 7–12 × 1–5 mm;

petals 4–5, yellowish to orange or reddish, oblong, 8–17 × 4–8 mm, base narrowly saccate, margins ciliate to erose, apex acute to rounded, adaxial surfaces often hairy;

nectary lobes 8–10, (paired), stout, not elongate or curved-cylindric;

stamens 8–10;

filaments sparsely hairy;

anthers horizontal at anthesis, horseshoe-shaped, sacs of equal size;

ovary 4–8 × 3–6 mm, usually hairy;

style 2–10 × 1–2 mm, sparsely hairy;

stigma umbilicate, 1.5–3 mm diam., often subtended by ring of crowded hairs.

4–5-segmented;

segments often deciduous after seed dispersal, thin, 6–10 × 4–8 mm, without connecting, pinnate, vascular bundles when open.

0.5–1 mm, mostly membranously winged.

= 48.