Flora of North America species comparison

becoming stout, woody.

becoming stout, woody.

erect or ascending to prostrate, usually branched proximally;

main stem 0.8–3 mm diam. proximally.

erect to ascending, often arcuately so, much-branched proximally;

main stem 0.4–1.3 mm diam. proximally.

stipules conspicuous, dull white to tan, narrowly triangular, 4.5–11 mm, apex long-acuminate;

blade linear, (0.6–)1–5.5 cm, fleshy, apex apiculate to spine-tipped;

axillary leaves 1–2+ per cluster.

stipules ± conspicuous, dull white, broadly lance-acuminate, 3–8 mm, apex mucronate;

blade filiform to linear, 1–4.2 cm, somewhat fleshy, apex apiculate or spine-tipped;

axillary leaves 2–4 per cluster.

erect, divergent, or reflexed in fruit.

spreading to reflexed in fruit.

sepals connate 0.5–1.8 mm proximally, lobes often 3-veined, ovate to lanceolate, 4.5–7 mm, to 8 mm in fruit, margins 0.3–0.7 mm wide, apex blunt to rounded;

petals white or pink to rosy, elliptic to obovate, 0.9–1.3 times as long as sepals in flower;

stamens 9–10;

styles 0.6–3 mm.

sepals connate 0.5–0.7 mm proximally, lobes 1- or 3-veined, lance-ovate to lanceolate, 2.5–4 mm, to 5 mm in fruit, margins 0.1–0.6 mm wide, apex acute to acuminate but often briefly rounded at tip;

petals white, ± elliptic, 0.7–0.8 times as long as sepal;

stamens 7–10;

styles 0.4–0.6 mm.

tan, 4.6–10 mm, 0.8–1.4 times as long as sepals.

greenish to tan, (4–)5–6.5 mm, 1.1–1.3 times as long as sepals.

± red-brown, often with submarginal groove or depression, suborbiculate to pyriform, compressed, (0.6–)0.7–1.2 mm, smooth to faintly or prominently tuberculate or sculpturing of parallel, wavy lines or of low, rounded mounds, not papillate;

wing absent or white to reddish brown proximally, 0.1–0.3 mm wide, margins irregular.

reddish brown to dark brown, often with submarginal groove, broadly ovate, plump, 0.4–0.5 mm, smooth, often sculptured with parallel, wavy lines, papillae often present;

wing often present, white, 0.1–0.2 mm wide, margins irregular.

simple to 3-compound or flowers solitary and axillary.

simple to 3-compound.