Flora of North America species comparison

becoming stout, woody.

slender to ± stout.

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

main stem 0.4–1.3 mm diam. proximally.

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

main stem 0.3–0.5 mm diam. proximally.

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.

stipules conspicuous, shiny white, lanceolate, 3.5–5 mm, apex long-acuminate;

blade filiform to linear, 0.4–1.5 cm, scarcely fleshy, apex apiculate to spine-tipped;

axillary leaves 2–4+ per cluster.

spreading to reflexed in fruit.

ascending to reflexed.

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.

sepals connate 0.5–0.7 mm proximally, lobes often 3-veined, lanceolate, (2–)2.5–3.2 mm, to 4 mm in fruit, margins 0.1–0.3 mm wide, apex obtuse to acute;

petals pink, obovate to ovate, 0.9–1 times as long as sepals;

stamens 6–10;

styles 0.6–0.8 mm.

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

greenish to tan, 3.5–5 mm, 1–1.2 times as long as sepals.

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.

red-brown to dark brown, with submarginal groove, broadly ovate or ± truncate, angular at broad end, plump, 0.4–0.6 mm, sculpturing of parallel, wavy lines, margins with peglike papillae (30x);

wing absent.

simple to 3-compound.

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

= 18, 27, 36, 54 (all Europe).