Flora of North America species comparison

absent.

absent.

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

axis yellowish to orange or reddish.

racemes or solitary flowers, nodding at emergence from soil, becoming erect in fruit, axis fleshy and fibrous, persistent after seed dispersal, white or yellowish to orange or reddish, 0.1–1 cm diam. proximal to proximalmost flower.

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

nodding at anthesis, somewhat longer in fruit;

bracteoles sometimes present.

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.

radially symmetric, nodding;

sepals absent or (3–)4–5(–6), distinct, lanceolate, oblong, spatulate, or elliptic;

petals (3–)4–5(–6), distinct, white to pinkish, reddish, yellowish, or orange, without basal tubercles, abaxial surface glabrous, adaxial surface with scattered hairs or hairy, corolla tubular-campanulate;

intrastaminal nectary disc present;

stamens 8–10(–14), included;

filaments ± uniformly slender or slightly broader proximally than distally, glabrous or sparsely hairy;

anthers transversely ellipsoid to depressed-ovoid or horseshoe-shaped, without awns, without tubules, dehiscent by 1 slit;

pistil (4–)5(–6)-carpellate;

ovary (4–)5(–6)-locular;

placentation axile;

style straight, stout or slender;

stigma umbilicate to funnelform, with or without subtending ring of hairs.

capsular, erect, dehiscent basipetally loculicidal, no cobwebby tissue exposed by splitting valves at dehiscence.

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.

100+, oblong-fusiform, mostly membranously winged.

= 8.

= 48.