Flora of North America species comparison

usually erect, rarely slightly decumbent, often densely clustered from top of woody crown, 3–15 cm, glabrous.

usually erect to ascending, rarely prostrate or decumbent, 10–50(–75) cm, usually both strigillose and hirsute.

opposite;

stipules distinct, narrowly linear, usually entire, 0.5–1 mm, glabrous;

petiole 0.5–1 mm, glabrous;

blade ovate to lanceolate or oblong- or linear-lanceolate, 3–11 × 0.8–3(–5) mm, base slightly asymmetric, short-tapered, occasionally one side slightly rounded, margins entire, apex acute or short-acuminate, surfaces glabrous;

only midvein conspicuous.

opposite;

stipules usually distinct, rarely connate at base, undivided or divided into 2–4 narrowly deltate to linear-subulate segments, 0.5–1.8(–2.9) mm, pilose, often with light-colored, minute circular glands at base;

petiole 1–3 mm, usually both strigillose and hirsute;

blade ovate to rhombic, 7–43 × 3–18 mm, base strongly asymmetric, one side rounded or slightly cordate to truncate, the other cuneate to attenuate, margins serrulate to double serrulate, apex acute, surfaces often with red spot in center, usually strigose to hirtellous, rarely glabrescent; 3–5-veined from base.

campanulate to turbinate, 0.8–1.4 × 0.8–1 mm, glabrous;

glands 4, yellow-brown to reddish, concave or convex, elliptic or oval, 0.2–0.4 × 0.4–0.6 mm;

appendages absent or white, lanceolate-deltate to straplike, 0.2–1.1 × 0.2–0.9 mm, distal margin entire, crenate, or deeply cleft or divided.

obconic, 0.6–1.2 × 0.4–0.9 mm, strigillose;

glands 4, greenish to pink, circular, oblong, or reniform, 0.1–0.2 × 0.1–0.2 mm;

appendages white to pink, flabellate, subcircular, or transversely oblong, rarely absent, (0–)0.1–0.6 × (0–)0.1–0.7 mm, distal margin usually entire, rarely slightly lobed.

25–35.

2–8.

ovary glabrous;

styles 0.3–0.4 mm, 2-fid 1/2 length.

ovary strigillose, often canescent when young;

styles 0.2–0.6 mm, 2-fid 1/2 length.

depressed-ovoid to depressed-globose, 1.7–2.1 × 1.6–2.4 mm, glabrous;

columella 1.2–1.8 mm.

subglobose to slightly oblate, 1–1.3 × 1.1–1.6 mm, strigillose;

columella 0.7–1 mm.

white, ovoid-pyramidal, prominently 4-angled in cross section, 1.6–2 × 1–1.2 mm, smooth to slightly wrinkled.

brownish red to orange or pink, narrowly ovoid, 4-angled in cross section, 0.7–0.9 × 0.5–0.7 mm, usually rugulose or with 3–6 low transverse ridges, rarely nearly smooth.

solitary at distal nodes;

peduncle 0.8–1.3 mm.

in dense, axillary and terminal, capitate glomerules, with reduced, bractlike leaves subtending cyathia, axillary glomerules either sessile or at tips of elongated, leafless stalks;

peduncle 0.4–2.1 mm.