Flora of North America species comparison

becoming stout, woody.

filiform.

erect or ascending to prostrate, usually branched proximally;

main stem 0.8–3 mm diam. proximally.

erect to ascending or arcuate-spreading, simple or branched proximally;

main stem 0.3–1 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 to tan, broadly triangular, 1–2.5 mm, apex acute to short-acuminate;

blade filiform to linear, 0.5–3.5 cm, fleshy, apex blunt to apiculate;

axillary leaf clusters absent.

erect, divergent, or reflexed in fruit.

divergently 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 0.2–0.5 mm proximally, lobes ± weakly 1-veined, elliptic to ovate, 1.8–2.7 mm, to 3.5 mm in fruit, margins 0.1–0.5 mm wide, apex broadly acute to rounded;

petals white to rosy, ± ovate, 0.7–0.8 times as long as sepals;

stamens 4–8;

styles 0.4–0.8 mm.

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

greenish, 3.3–5 mm, 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.

black, often iridescent, submarginal groove usually absent, broadly ovate, compressed, 0.6–0.8 mm, shiny, sculpturing of parallel, wavy lines, not papillate (40x);

wing absent or, rarely, incomplete, brownish, 0.1–0.2 mm, margins irregular.

simple to 3-compound or flowers solitary and axillary.

simple to 2-compound.