Flora of North America species comparison

usually erect or ascending, occasionally decumbent, leafy mostly in proximal 2/3 of plant, openly forked distally, 4–15 dm, basally usually glabrous or puberulent in 2 lines, rarely spreading-pubescent; distally stems usually puberulent in 2 lines, occasionally glabrate, rarely spreading glandular-pubescent.

1–many, erect to decumbent, few or highly branched, sparsely to densely leafy in basal 1/2 or throughout, 0.8–15 dm, glabrous to puberulent basally in 2 lines or throughout, hairs often awned, or stems villous and often viscid, or sometimes hirsute, hair types often mixed, spreading pubescent.

ascending at 45–80°, abruptly reduced to inflorescence;

petiole 0.2–2 cm;

blade green, ovate-lanceolate to ovate or triangular, 3–10 × 2–6.5 cm, usually ± thin, base obtuse, round, truncate, or cordate, apex acute to acuminate, rarely rounded, surfaces usually glabrous, sometimes puberulent or sparsely hispidulous.

ascending to spreading at 10–90°;

petiole 0–4 cm;

blade green to glaucous blue-gray, linear-lanceolate to ovate-lanceolate, ovate, or deltate, 1–11 × 0.6–2.5 cm in lanceolate leaves, 2–9 × 1–6.5 cm in ovate leaves, thin and fleshy to thick and coriaceous, base cuneate to round, truncate, or cordate, apex acute, obtuse, or round, surfaces glabrous or viscid-puberulent, viscid-villous, or hirsute.

terminal and in upper axils, subumbellate clusters at ends of long, forked branches;

peduncle 5–20 mm, usually pubescent with ascending, often curved, glandular or eglandular hairs, crosswalls of hairs pale;

involucres pale green, often tinged pinkish, widely bell-shaped to almost rotate, 4–6 mm in flower, 8–15 mm in fruit, glabrous or glabrate but with minute curved hairs on margins, or rarely puberulent or pilose throughout, 50–90% connate, lobes ovate to broadly ovate.

axillary or terminal, few branched, ± evenly forked and open, or, when axillary, often consisting only of single involucres (and then flowers commonly cleistogamous);

peduncle 1–25 mm, puberulent with curled hairs, hispid, villous, or viscid-villous, crosswalls of hairs pale;

involucres pale green or sometimes blushed with purple when young, widely bell-shaped, 4–7 mm in flower, 5–15 mm in fruit, sparsely to densely pubescent with small curled hairs or long spreading hairs, often viscid, 50–80% connate, lobes ovate, triangular-ovate, broadly ovate, or occasionally round.

(2–)3(–5) per involucre;

perianth usually pink to reddish purple, rarely white, 1 cm.

(1–)3 per involucre;

perianth white, pink, or deep red-violet, 0.8–1.5 cm.

dark grayish brown to reddish brown (ribs and tubercles usually slightly paler), narrowly obovate and tapering at both ends, 3.4–5 mm, shaggy-pubescent with spreading, sometimes tufted, hairs, 0.3–0.4 mm, sometimes also with layer of minute hairs;

ribs usually irregularly and deeply notched, especially toward apex, round to bluntly angled, 0.5–0.75 times width of sulci, 0.5–1 times as wide as high;

sulci with pale small to tall tubercles that are sometimes horizontally lengthened and shelflike.

brown to dark brown with pale tan, brown, or dark brown ribs, obovoid to narrowly obovate and tapering at both ends, 3.5–5.5 mm, pubescent with tufted spreading hairs 0.1–0.5 mm, with or without minute glandular hairs;

ribs round or round-angled, (0.3–)0.7–1.5 times width of sulci, 0.5–1 times as wide as high, with tall shelflike tubercles (eastern part of range), smooth or somewhat rugose or moderately tuberculate (western part of range);

sulci with prominent, pale, shelflike tubercles (eastern), minutely rugose or with small low warts (western).

= 58.

= 58.