Flora of North America species comparison

copper to reddish brown, stiffly to loosely branched, appressed villous-sericeous, ± strigose, hairs often red-gland based, or glabrous;

epidermis soon or tardily deciduous exposing cortex and striate bundle caps;

bark grayish;

internodes (0.1–)1–2.5(–6) cm; short-shoot spurs not present;

axillary buds hidden in pouches.

erect to ascending, green, older stems gray, glabrous or sparsely strigose or villous, especially at nodes;

bark tight, not exfoliating or flaking, gray;

branches erect;

axillary buds hidden in pouches.

petiole 1–2(–4) mm;

blade greenish or whitish abaxially, green adaxially, linear-lanceolate, narrowly ovate to ovate, (0.5–)0.8–3(–5.5) × (0.2–)0.3–1.3(–3.3) cm, herbaceous to coriaceous, margins usually entire, rarely sparsely serrulate, plane or revolute upon drying, abaxial surface short sericeous-strigose, or sericeous-villous with longer hairs, or with ascending to erect hairs, sometimes with dense to moderate understory of slender curled hairs, adaxial surface glabrous, glabrate, ± sericeous-strigose, villous, or with erect hairs.

petiole 1–12(–20) mm;

blade broadly lanceolate to broadly ovate, or narrowly to broadly elliptic, (3–)5–10(–16) × 1.6–7(–11) cm, base narrowly cuneate to rounded, margins entire or irregularly to regularly serrate, crenate, or dentate, plane, abaxial surface moderately to densely strigose or tomentose to villous, hairs twisted, main vein axils and main veins often more densely strigose-tomentose, adaxial surface glabrous or very sparsely strigose, especially near base and margins.

usually solitary flowers, sometimes 3–5-flowered cymes.

usually cymose racemes or cymose panicles, sometimes flowers solitary, (1–)5–9-flowered, proximal 2 or 4 flowers often in axils of nearly normal to much reduced (bracteal) leaves.

0.5–3 mm.

3–8 mm, glabrous or moderately strigose.

hypanthium glabrous, sericeous-strigose basally or throughout, or weakly to densely villous to densely lanate with mixed strigose and villous vestiture, with understory of slender curled hairs;

sepals ovate to lanceolate, (2.5–)4–8.5(–10) × (2.5–)3–4.3(–5) mm, apex acute to acuminate-caudate, abaxial surface glabrous, sericeous-strigose, or weakly to densely villous to densely lanate with mixed strigose and villous vestiture, with understory of slender curled hairs, adaxial surface glabrous except villous along distal margins;

petals white [marked purple near base], oblong-obovate to broadly ovate, (5.8–)7–16(–21) × (5.3–)6–11(–15) mm, margins entire or erose-undulate, apex ± acute, rounded, or notched;

stamens 26–64;

filaments often connivent-connate in irregular clusters in proximal 0.5–4 mm, 1.8–8 mm, of unequal length, glabrous;

anthers yellowish, 0.7–1.2 mm;

styles 4, connate proximally, cylindric, 2.5–5.5(–7) mm, lobes sometimes connate proximally in pairs, 0.5–2.5 mm;

stigmatic surfaces extending from adaxial lobes onto abaxial lobes and down to cylindric style.

hypanthium sparsely to densely strigose or villous;

sepals ovate, ovate-lanceolate, or triangular, 5–8 × 3–5 mm, apex acute to acuminate, abaxial surface moderately to densely strigose or villous, adaxial surface densely villous distally;

petals white, oblong, obovate, or orbiculate, 12–21 × 8–12 mm;

stamens 25–50;

filaments distinct, 5–11 mm;

anthers 1.5 × 1 mm;

styles 4, connate proximally, cylindric, 6–10 mm, lobes 1.5–5 × 0.4–0.7 mm;

stigmatic surfaces 1.5–4 mm.

oblong-globose or globose-turbinate, (3.6–)5–8(–9.5) × (3.5–)4–7(–9.5) mm, sepals persisting at equator or more distally, capsule distal surface often impressed in 4(–8) radiating lines.

obconic to obovoid, 6–11 × 4–7 mm.

short caudate distally, 1.5–2.5 mm.

caudate, 3–4 mm.

= 26.