Flora of North America species comparison

becoming stout, woody.

± slender.

erect or ascending to prostrate, usually branched proximally;

main stem 0.8–3 mm diam. proximally.

erect to ascending or prostrate, usually much-branched proximally;

main stem 0.6–2(–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 inconspicuous, dull white, broadly triangular, 1.2–3.5 mm, longer than wide, apex acute to short-acuminate;

blade linear, (0.8–)1.5–4 cm, fleshy, apex blunt to apiculate;

axillary leaf clusters usually absent.

erect, divergent, or reflexed in fruit.

reflexed and oriented to 1 side 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 0.5–1 mm proximally, lobes often 3-veined, ovate to elliptic, 2.5–4.5 mm, to 4.8 mm in fruit, margins 0.1–0.5 mm wide, apex acute to rounded;

petals white or pink to rosy, ovate to elliptic-oblong, 0.8–1 times as long as sepals;

stamens (1–)2–3(–5);

styles 0.4–0.7 mm.

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

greenish to tan, 2.8–6.4 mm, 1–1.5 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.

light brown to reddish brown, with submarginal groove, broadly ovate, ± plump, 0.5–0.7(–0.8) mm, dull, ± smooth, often with gland-tipped papillae (30x);

wing usually absent or incomplete.

simple to 3-compound or flowers solitary and axillary.

simple to 3+-compound or flowers solitary and axillary.

= 18? (Asia), 36 (Europe).