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.

spreading, green to yellowish, weathering grayish and striate, divaricately branched, moderately to sparsely strigose-sericeous;

internodes 1.5–5.5 cm (long shoots), 0.2–2.2 cm (lateral branches);

axillary buds exposed.

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 2–4.5(–8) mm;

blade grayish or whitish abaxially, green adaxially, usually narrowly lanceolate to lance-ovate, sometimes ovate, (1–)1.6–3.3(–4.7) × (0.4–)0.5–1.1(–2.3) cm, ± herbaceous, margins usually entire, rarely sparsely serrulate, plane, sometimes drying revolute, abaxial surface densely and loosely strigose, hairs arched-twisted, 0.3–1.2 mm, with or without understory of coiled-crisped, slender hairs between raised veins, adaxial surface sparsely to moderately strigose, hairs antrorsely appressed, 0.4–0.9 mm, 1–3 hairs per mm of width.

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

flowers solitary.

0.5–3 mm.

1–2(–4) mm, loosely strigose or glabrous.

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 loosely strigose or glabrous;

sepals ovate to ovate-lanceolate, 2.5–5.5 × 1–2.5 mm, apex obtuse to long acuminate-caudate, abaxial surface loosely strigose or glabrous, adaxial surface glabrous except ciliate and villous along distal margins;

petals white, oblong-ovate to ovate, 8–10(–14) × 3.5–5(–10.5) mm, margins entire to undulate, apex obtuse to notched;

stamens (11–)14–16(–24);

filaments distinct, 1–4.7 mm;

style 1, clavate, 1.9–3(–3.5) mm, slender base 0.5–2 mm;

stigmatic portion obovoid, 1.2–1.7 × 1.1 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.

turbinate-spheroid, 3.5–5.5 × 3.5–5 mm, sepals at distal 1/3, tardily falling, capsule distal surface smooth or impressed in 4 vertical lines.

short caudate distally, 1.5–2.5 mm.

short-caudate distally, 1–1.2 mm.