Flora of North America species comparison

erect to ascending, often clumped, terete, 25–120(–250) cm, unusually thick, 3–9 mm diam., well branched mainly in distal 1/2, densely long-villous throughout, usually mixed glandular puberulent distally, rarely sparsely villous or densely white-tomentose.

usually suberect, rarely matted, terete, 1.5–50 cm, often with sprawling, decumbent proximal branches, rarely simple, glabrous proximally or throughout, sometimes ± densely strigillose and/or villous distally.

opposite proximal to inflorescence, alternate distally, sessile and ± clasping stem;

blade elliptic-lanceolate to narrowly obovate or elliptic, 4–12(–23) × 0.3–4(–5) cm, base cuneate to attenuate, margins serrulate, 15–50 teeth per side, veins 6–9 per side, apex acute to acuminate or obtuse proximally, surfaces ± densely villous;

bracts moderately reduced.

crowded, subsessile, blade lanceolate to narrowly lanceolate or oblong, 0.8–3.5 × 0.2–0.6(–1) cm, longer than subtending internodes, base cuneate, margins evenly serrulate, 4–7 teeth per side, lateral veins obscure, 2–5 per side, apex acute, surfaces strigillose and ± villous, at least along veins and margins;

bracts not much reduced.

erect racemes or panicles, usually densely villous and glandular puberulent, rarely tomentose.

erect spikes, congested, unbranched, densely strigillose and ± villous or subglabrous.

erect;

buds 5–9 × 1.8–4.5 mm, sometimes beaked;

pedicel 3–11 mm;

floral tube 1.3–2.9 × 2.2–4 mm, conspicuous ring of spreading hairs near mouth inside;

sepals oblong-linear, often keeled, 6–12 × 1–3 mm, abaxial surface densely pubescent;

petals bright pink to rose-purple, rarely white, broadly obcordate, 9–20 × 7–15 mm, apical notch 1–3 mm;

filaments white or pink, those of longer stamens 5–10 mm, those of shorter ones 2.5–6 mm;

anthers cream, 1.5–3 × 0.6–1.2 mm;

ovary 15–34 mm, densely villous and glandular puberulent;

style white or pink, 5–12 mm, usually glabrous, stigma deeply 4-lobed, 1.8–2.2 × 3–5.5 mm, lobes recurved or spreading, exserted beyond anthers.

erect, often hidden by subtending bracts, often cleistogamous;

buds 1.2–2 × 0.7–1.1 mm;

floral tube 0.3–1.1 × 0.2–0.8 mm, raised ciliate ring proximal to mouth inside;

sepals reddish green, 0.7–1.9 × 0.6–1.2 mm;

petals pale pink, fading purplish rose, 0.9–3.5 × 0.7–0.9 mm, apical notch 0.3–1.3 mm;

filaments light pink, those of longer stamens 0.5–1.5 mm, those of shorter ones 0.4–0.9 mm;

anthers pale yellow, 0.4–0.8 × 0.3–0.5 mm;

ovary 3–5 mm, usually densely villous;

style pale pink, 0.6–1.8 mm, stigma clavate, irregularly 4-lobed to subentire, 0.5–1 × 0.2–0.6 mm, surrounded by longer anthers.

often flushed purple, 25–90 mm, surfaces usually densely villous and glandular puberulent, rarely glabrescent;

pedicel 5–20 mm.

cylindrical to subfusiform, ± terete, 4.5–8 mm, beak 0.8–1 mm, usually dehiscing on distal 1/3, sometimes tardily splitting to base, central axis prematurely disintegrating, villous;

subsessile.

narrowly obovoid, 0.8–1.2 × 0.3–0.6 mm, chalazal collar inconspicuous, dark brown, surface coarsely papillose;

coma easily detached, tawny or dull white, 7–10 mm.

7–14 per tightly packed row, irregularly angular-fusiform, 1–1.3 × 0.4–0.6 mm, chalazal collar absent, surface irregularly reticulate.

= 36.

= 30.