Flora of North America species comparison

erect, green or tan to reddish green, terete, (3–)10–120(–190) cm, often thick, well branched or simple, subglabrous proximal to inflorescence with raised strigillose lines decurrent from margins of petioles, ± densely mixed strigillose and glandular puberulent distally, rarely densely strigillose or densely villous throughout.

decumbent, often matted, grayish green, terete, 5–25 cm, well-branched throughout, densely white-canescent proximally, mixed strigillose, villous, and glandular puberulent distally.

opposite proximal to inflorescence, alternate distally, petiole 0–5(–10) mm, often subsessile distally, sometimes clasping;

blade narrowly obovate, obovate, broadly elliptic, or spatulate proximally, to very narrowly lanceolate to ovateor broadly elliptic distally, (1–)3–12(–16) × (0.2–)0.6–5.5 cm, base rounded to cuneate or short-attenuate, margins serrulate, (8–)15–40 irregular teeth per side, veins prominent, 4–10 per side, apex obtuse to acute or subacuminate, surfaces usually subglabrous with strigillose margins, rarely densely strigillose or villous;

bracts scarcely reduced to very reduced and narrower.

densely spaced, opposite proximal to inflorescence, alternate or fasciculate distally, petiole 0–2 mm, blade grayish green to green, lanceolate or elliptic to narrowly ovate, 1–3.5(–4) × 0.4–1.1 cm, base cuneate or attenuate, margins subentire to low-denticulate, 5–8 teeth per side, veins inconspicuous, 3–5 per side, apex acute, sometimes with caducous dark mucro, surfaces densely white-canescent and eglandular proximally, changing abruptly on inflorescence to glandular puberulent mixed with scattered villous;

bracts somewhat reduced.

usually erect, rarely nodding, racemes or panicles, well branched and open, to simple and congested, ± densely strigillose and glandular puberulent.

ascending spikes or racemes, densely glandular puberulent.

erect;

buds 1.5–7 × 1–3 mm;

pedicel 2–14(–20) mm;

floral tube 0.5–2.6 × 0.9–3.5 mm, ring of spreading hairs at mouth inside;

sepals often reddish green, lanceolate, sometimes keeled, 2–7.5 × 0.7–2.5 mm;

petals white or pink to rose-purple, obovate, 2–14 × 1.3–6.3 mm, apical notch 0.4–2.5 mm;

filaments white to dark pink, those of longer stamens 1.4–7 mm, those of shorter ones 0.6–5.2 mm;

anthers light yellow to cream, 0.5–1.8 × 0.3–0.9 mm;

ovary often reddish green, 8–40 mm, ± densely mixed strigillose and glandular pubescent;

style cream to light yellow, 1.1–8.5 mm, stigma cream to orange-yellow, narrowly to broadly clavate or subcapitate, 0.8–2.8 × 0.4–1.2 mm, rarely indented apically, usually surrounded by, rarely exserted beyond, anthers.

buds 12–15 × 4–5.5 mm, subsessile or pedicels 1–2 mm;

floral tube same color as petals, 17–23 × 3.5–5 mm, with ring of scales 4–5 mm from base inside;

sepals same color as petals, 7–12 × 2.5–3.5 mm;

petals red-orange, 8–14 × 5–6.5 mm, apical notch 1.8–2.4 mm;

filaments orange or red, those of longer stamens 15–17 mm, those of shorter ones 13–15 mm;

anthers 2.8–3.2 × 0.7–1 mm;

ovary 5–11 mm, glandular puberulent;

style light orange, 40–45 mm, stigma 4-lobed, 0.9–1.1 × 2.2–2.6 mm, exserted 8–10 mm beyond anthers.

erect, (15–)30–100 mm, surfaces usually strigillose and glandular puberulent, rarely glabrescent;

pedicel 2–15(–40) mm, rarely subsessile.

± straight, 20–26 mm, ± beaked, surfaces glandular puberulent;

sessile or pedicel 1–3 mm.

narrowly obovoid or subfusiform, (0.6–)0.8–1.6(–1.9) × 0.3–0.6 mm, chalazal collar ± conspicuous, 0.1–0.3 × 0.2–0.4 mm, grayish tan to brown, surface with conspicuous parallel longitudinal ridges of laterally flattened papillae;

coma readily detached, white or dingy white, 2–8 mm, very rarely absent.

broadly to narrowly obovoid, with constriction 0.7–0.8 mm from micropylar end, 1.8–2.4 × 1.1–1.3 mm, chalazal collar inconspicuous, light brown, surface low-papillose;

coma easily detached, dingy white, 6–7 mm.

= 36.

= 30.