Flora of North America species comparison

erect or ascending, unbranched, sometimes sinuous, 5–30 cm, glabrous or sparsely to densely puberulent.

erect or ascending, usually unbranched, occasionally few branched, solitary or few, previous year's dead stems not persistent, 20–100 cm, glabrous or slightly pilose to villous.

petiole 0–1 mm;

blade oblanceolate to obovate, 8–20 mm × 3–7 mm, base truncate or cuneate, margins entire, apex obtuse to rounded, minutely mucronate, surfaces puberulent or glabrous;

venation inconspicuous, only midvein prominent.

alternate, ascending;

stipules 0.1–0.2 mm;

petiole minute or absent;

blade oblanceolate, obovate, or elliptic, 25–55 × 5–12 mm, base cuneate to rounded, margins entire, occasionally slightly revolute, apex rounded to subacute, abaxial surface glabrous or pilose to villous, adaxial surface usually glabrous, rarely villous;

venation occasionally obscure on small leaves, midvein conspicuous.

cupulate, 2–2.2 × 1.3–1.8 mm, glabrous;

glands 4, oblong to broadly ovate, usually truncate, 0.5–0.8 × 1–1.6 mm, margins irregularly crenate to strongly dentate;

horns absent or usually divergent or straight, 0.1–0.3 mm, usually slightly longer than, occasionally equaling, teeth on gland margin.

campanulate, 1.2–1.5 × 1.2–1.5(–2) mm, glabrous or moderately puberulent (especially near glands);

glands 5, green, reniform, 0.5 × 0.8–1 mm;

appendages white, flabellate, 2.5–3.5(–4.5) × 2.5–3.2 mm, entire.

10–20.

20–25.

ovary glabrous or puberulent;

styles 0.7–1 mm, 2-fid.

ovary glabrous;

styles 0.8–1.4 mm, 2-fid at apex to 1/2 length.

ovoid, 3.5–4 × 4–4.5 mm, 3-lobed;

cocci rounded, smooth to slightly rugose, glabrous;

columella 3.2–3.5 mm.

globose, 2.3–3 × 3.5–4.2 mm, glabrous;

columella 2–2.5 mm.

gray to dark gray, truncate-oblong to truncate-ovoid, 2.8–3 × 1.7–2 mm, irregularly pitted;

caruncle conic, 0.6 × 0.7 mm.

white or light gray, ovoid, 2.5–2.8 × 2.2 mm, with shallow and coarse depressions;

caruncle absent.

arrangement: terminal pleiochasial branches 3–5, each 1–4 times 2-branched;

pleiochasial bracts ovate to broadly ovate or oblanceolate, wider than distal leaves;

dichasial bracts distinct, rounded, oblanceolate, or subreniform, base cuneate or obtuse, margins entire, apex obtuse, slightly mucronate;

axillary cymose branches 0–4.

peduncle 0.3–0.9 mm.

in terminal pleiochasia, dichasial bracts occasionally whorled or rarely alternate;

peduncle (1.5–)5–11(–13) mm (proximal to 70 mm), glabrous.