Flora of North America species comparison

filiform to moderately thickened;

rhizomes often present, slender, 2–15+ cm.

filiform;

rhizomes slender, 0.5–3 cm.

1–80+, erect or ascending to procumbent or prostrate to trailing, green, 5–60 cm;

internodes terete to angular, 1/3–8+ times as long as leaves, dull, retrorsely pubescent throughout or in lines, hairs minute.

25–60+, erect to ascending, green, 2–4 cm;

internodes terete, 1–4 times as long as leaves, shiny, minutely glandular-villous.

usually connate basally, with scarious sheath 0.1–0.5 mm, occasionally petiolate (proximal leaves) or sessile;

petiole 2–5 mm;

blade 1-veined, vein prominent abaxially, linear-lanceolate to narrowly elliptic or oblanceolate, 3–35 × 2–14 mm, herbaceous, margins thickened, scarious, shiny, ciliate proximally or throughout, apex obtuse or acute to apiculate, often minutely pustulate, ciliate on margins and adaxial midrib;

axillary leaf clusters absent.

briefly connate basally, with herbaceous sheath 0.1–0.3 mm, sessile;

blade obscurely 1-veined, narrowly elliptic to lanceolate or ovate, 2–6 × 1–1.5 mm, subsucculent, margins thickened, herbaceous, shiny, ciliate proximally, apex acute to apiculate, pustulate, glabrous;

axillary leaf clusters absent.

axillary, solitary flowers or in proliferating, mostly terminal, leafy, 1–80+-flowered cymes.

terminal, solitary flowers.

erect to ascending (often arcuately so), or straight to widely divergent, often hooked distally in fruit, 2–40 mm, retrorsely pubescent.

erect in fruit, 10–20 mm, densely glandular-villous.

sepals green, 1–3-veined, 2 lateral veins 1/4–3/4 times as long as midvein, often appearing prominently keeled proximally, lanceolate to ovate (herbaceous portion oblong or lanceolate to ovate), 2–5 mm, to 5.5 mm in fruit, apex acute to acuminate, not pustulate, glabrous;

petals narrowly spatulate to obovate, 1.5–6 mm, 1/2–12/5 times as long as sepals or absent, apex obtuse to rounded, petals sometimes absent.

sepals green, obscurely veined, not keeled, ovate (herbaceous portion ovate), 3.5–4 mm, not enlarging in fruit, apex acute to acuminate, not pustulate, minutely stipitate-glandular proximally;

petals broadly elliptic, 2.5–3.5 mm, 11/4–11/2 times as long as sepals, apex rounded.

± loosely to tightly enclosed by calyx, ovoid, 3–6 mm, 4/5–11/2 times as long as sepals.

tightly enclosed by calyx, ellipsoid, 4–5 mm, 1–11/5 times as long as sepals.

8–35, black, suborbicular, slightly compressed, 0.7–0.8 mm, shiny, smooth.

13–20, brown, reniform, compressed, 0.7–0.9 mm, shiny, rugulose (30x).

= 40, 44.

= 40, 80.