Flora of North America species comparison

spreading to erect-fastigiate, 10–45 cm, usually sparsely stellate-pubescent to glabrate, sometimes densely lanate.

ascending to erect, usually red-tinged, 15–50(–65) cm, stellate-pubescent to glabrate.

cauline, tending to be deciduous in summer;

petiole 0–2 mm;

blade linear, 5–11 × 0.5–2(–3.5) mm, surfaces stellate-pubescent to glabrate abaxially, sparsely stellate-pubescent to glabrate adaxially, lateral veins obscure abaxially.

cauline;

petiole 1–3 mm;

blade oblanceolate-elliptic to narrowly elliptic, tapered to base, 12–30(–38) × 4–7(–10) mm, apex acute, surfaces stellate-tomentose and with scattered simple hairs abaxially, ± lustrous, sparsely stellate-pubescent and with simple hairs adaxially, lateral veins raised abaxially.

terminal, panicles or racemes; chasmogamous flowers 1–18 per panicle or raceme, cleistogamous 0.

terminal or subterminal, cymes; chasmogamous flowers 1–3 per cyme, cleistogamous 1–3 per glomerule, on lateral leafy branches 6–18 cm, flowering 1–3 months later than chasmogamous.

2–6 mm, sparsely or not glandular-hairy;

bracts 2–4 × 0.3–0.5 mm.

(1.5–)4–10(–17) mm, with stellate and simple hairs;

bracts absent.

flowers: outer sepals linear, 1.5–3.5 × 0.3 mm, inner sepals 3.5–5(–7.5) × 2–3 mm, apex acute to acuminate;

calyx stellate-pubescent, hairs to 1 mm;

petals obovate, 3–6 × 3–5 mm;

capsules 2.8–3.8 × 2–2.5 mm, glabrous.

flowers: outer sepals narrowly lanceolate, 2–6 × 0.5–1 mm, inner sepals 5–9 × 3.5–5 mm, apex acute;

petals obovate, 8–15 × 6–14 mm;

capsules 5–8 × 4–7 mm, glabrous.

flowers: outer sepals rudimentary, 0.2–0.5 × 0.2–0.4 mm, inner sepals obovate, 2.5–4 × 2.5–3.5 mm, apex acute;

capsules 2.3–3.5 × 2.5–3.5 mm, glabrous.

= 20.