Flora of North America species comparison

usually well branched from base, 8–50 cm, flowering only distally.

cauline, with lower ones clustered near base, (0.7–)2–8(–10) × 0.1–2.5 cm;

petiole 0.1–3.5 cm;

blade very narrowly elliptic to narrowly elliptic, margins entire or sparsely denticulate.

nodding.

opening at sunset;

floral tube 1.5–3 mm, villous in proximal 1/2 inside;

sepals 1.5–2.5 mm;

petals white, fading pinkish, 1.8–3 mm; episepalous filaments 0.7–1.5 mm, epipetalous filaments slightly shorter, anthers 0.5–1.1 mm;

style 2.3–4.5 mm, villous proximally, stigma 0.7–1 mm diam., surrounded by anthers at anthesis.

narrowly cylindrical throughout, spreading, straight, terete, 35–60 × 0.7–1 mm, regularly but tardily dehiscent.

monomorphic, gray, 0.9–1 × 0.3–0.4 mm, finely reticulate.

= 14.