Flora of North America species comparison

erect;

twigs glabrous.

deciduous [persistent], alternate, sometimes seemingly whorled;

petiole present;

blade subcoriaceous, margins entire.

alternate;

petiole 6–14 mm;

blade ovate to elliptic, 5–12 × 2–4.5 cm, base cuneate, margins flat, apex acute to acuminate, mucronate, abaxial surface sparsely hairy, especially on veins, adaxial surface green.

terminal racemes, panicles, or cymes, 2–80-flowered, sometimes flowers solitary;

perulae absent.

terminal, (10–)40–80-flowered racemes or panicles (branches to 5 cm), (5–)10–20(–28) cm;

bracts (deciduous before anthesis), scalelike, linear to ligulate, 2–3 mm, margins ciliate.

10–20 mm, with 2 deciduous, minute bracteoles proximally.

bisexual, radially symmetric;

sepals [3–]5, ± distinct;

petals 4–5, distinct or connate to 1/4 their lengths, corolla deciduous, rotate;

stamens 8(–10), exserted;

anthers without awns, dehiscent laterally;

ovary 5–6-locular;

style exserted;

stigma expanded, discoid.

calyx lobes 5, broadly deltate, 1–1.5 × 1–1.2 mm, apex subacute, with short, stiff hairs;

corolla 4–5-lobed, petals white, narrowly elliptic to spatulate, 9–10(–14) mm;

stamens 10;

filaments 4–5 mm, glabrous;

anthers 0.7–1 mm;

style (not persisting in fruit), straight to slightly curved (not recurved), 7–10 mm.

capsular, spheroidal or oblate-spheroidal, dehiscence ± septicidal.

oblate-spheroidal, 4–5-parted, 7–12 mm wide, inconspicuously verrucose.

30–100, ovoid, flattened, not tailed, sometimes winged;

testa pitted.

ca. 50–100, 2–2.5 mm.

= 11.

= 22.