Flora of North America species comparison

1–10+, orientation unknown;

bark gray to dark gray, smooth, older plaited; short shoots absent; unarmed;

tomentulose to villous-canescent, hairs white, short, tightly crinkled, often tardily to soon glabrescent.

densely white-tomentulose, becoming canescent.

petiole (4–)6–16(–22) mm;

blade bicolor, abaxially white, adaxially green and nonlustrous, linear to linear-lanceolate, (2.5–)5–11(–15) × (0.6–)0.7–1.2(–1.4) cm, surfaces villous-tomentulose, soon or tardily glabrescent except for hairy midveins.

persistent, cauline, erect-ascending to spreading, simple;

stipules tardily deciduous, free, subulate to narrowly deltate, margins entire, glandular;

petiole present;

blade oblong-elliptic or oblong-lanceolate to linear-lanceolate or linear to linear-oblong, (2.2–)3–13(–18.5) cm, leathery, margins flat, usually horny, serrate, serrulate, or crenulate, sometimes doubly serrate, rarely entire, venation pinnate and semicraspedodromous, surfaces tomentulose, sometimes glabrate or puberulent.

terminal or axillary, 15–25+-flowered, compound corymbs, puberulent to tomentulose;

bracts present;

bracteoles present.

present.

hypanthium 2–2.5 × 3–3.5 mm, exterior white villous-tomentulose, interior glabrous except at base;

sepals 1.3–1.8 × 1.6–2 mm, villous-tomentulose;

petals 4–5 × 2.4–3 mm;

filaments 3–5 mm.

perianth and androecium perigynous, 5–10 mm diam.;

hypanthium hemispheric, 1.5–2.5(–3) mm, leathery, sericeous, glabrescent, interior proximal surface nectariferous;

sepals 5, erect, broadly ovate;

petals 5, white, oblong-ovate to oblong-obovate, base clawed, apex rounded to emarginate;

stamens 18–20, shorter than petals;

torus thickened;

carpels 5, connate, free, strigose, styles terminal, distinct;

ovules 2.

capsules, broadly ovoid, 4.5–7.5 mm, woody, sericeous, ventrally (fully) and dorsally (in distal 1/2) dehiscent, splitting into 5 follicles;

hypanthium persistent;

sepals persistent, erect;

styles persistent.

5–6 × 3.5–4 mm.

3.5–4 × 0.9–1.2 mm.

2 per follicle, winged.

1.5–4.5 × 2–6.5 cm, villous to tomentulose.

= 15.