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.

terete, 4.5–55 cm, simple or with proximal ascending branches and/or distal branches, ± densely villous and/or strigillose, mixed glandular puberulent distally or glabrescent.

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.

opposite only in proximal pairs, alternate and crowded distally, subsessile, blade narrowly elliptic or lanceolate, 1.2–5 × 0.2–1.2 cm, usually longer than internodes, base cuneate to attenuate, margins subentire or sparsely serrulate, 3–5 teeth per side, veins inconspicuous, 2–7 per side, apex acute, surfaces villous;

bracts same size and shape as leaves.

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

erect spikes, often congested proximally, sometimes nodding in bud, simple, or sometimes sparsely branched, ± densely mixed villous, strigillose, and glandular puberulent.

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, mostly chasmogamous, sometimes initiating at second or third proximal node;

buds 3–5 × 2.5–3.5 mm, apex blunt;

floral tube 1.5–3 × 1.1–2.8 mm, ring of lax hairs near base inside;

sepals erect, (1.5–)2–6.2 × (0.5–)1–2.2 mm, densely villous and glandular pubescent abaxially;

petals rose-purple, (2.8–)4.2–9.8 × (2.2–)3.5–5.3 mm, apical notch 1.2–3.5 mm;

filaments rose-purple, those of longer stamens 2.4–6.5 mm, those of shorter ones 0.9–4.3 mm;

anthers 0.6–1.6 × 0.2–0.8 mm;

ovary 3.5–9 mm, densely pubescent;

style pink, 3.3–9.2 mm, stigma 4-lobed, ± subentire in smaller flowers, 0.7–1.4 × 0.5–1.3 mm, usually surrounded by, rarely exserted beyond, longer anthers.

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

pedicel 5–20 mm.

narrowly fusiform, (10–)14–21 × 1–2.1 mm, beak 2–5 mm, ribs usually broad and prominent, septa and central column disintegrating with age, surfaces ± densely 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.

8–12 per capsule, initially in 4 locules, at maturity pushed into 2 rows proximally, 1 overlapping row distally, irregularly angular-fusiform, 1.8–2.3x 0.7–0.9 mm, chalazal collar absent, surface irregularly reticulate.

= 36.

= 20.