Flora of North America species comparison

alternate;

blade usually narrowly elliptic to elliptic, rarely somewhat falcate, 5.5–12 × 1–3.1 cm, veins 5–7, longitudinal, surfaces glabrescent.

alternate;

blade narrowly elliptic to elliptic or narrowly obovate, 2.5–13.8 × 0.3–2.7 cm, veins pinnate, surfaces glabrescent.

15–54-flowered, flowers in triads, pseudoterminal, sometimes also axillary distally, to 40 mm wide.

15–50-flowered, flowers in monads, pseudoterminal or interstitial, 35–50 mm wide.

calyx lobes glabrous abaxially, margins scarious, 0.3–0.4 mm wide;

petals deciduous, 2.5–3.5 mm;

filaments connate in bundles of 5–10, white, cream, greenish white, green, creamy white, or creamy yellow, 10.5–20 mm, bundle claw 0.9–2.5 mm;

style 11–18 mm;

ovules ca. 50–65 per locule.

calyx lobes hairy or glabrescent abaxially, margins herbaceous;

petals deciduous, 3.4–5.9 mm;

filaments connate in bundles of 9–14, usually in 5 distinct bundles, these sometimes obscure, especially when claw is very short, red or crimson, 13–26 mm, bundle claw to 2.2 mm;

style 16–29 mm;

ovules ca. 100 per locule.

2.7–4 mm.

3.8–4.8 mm.

obvolute.

obvolute.

= 22.