Flora of North America species comparison

erect, branched, 4-sided, 10–40 cm, with alternating lines of spreading, soft, flexuous, mainly eglandular hairs.

straggling, with erect branches, smoothly 4-angled, (20–)30–60 cm, glabrous.

usually sessile (distal), often short-petiolate (proximal);

blade elliptic, obovate, or lanceolate, widest at or beyond middle, 1–10 cm × 5–35 mm, base cuneate, margins entire, apex acute, glabrous to sparsely pubescent adaxially, ciliate on margins and abaxial midrib.

sessile;

blade linear-lanceolate, 1.5–5 cm × 1–4 mm, base cuneate, margins smooth, apex acute, glabrous, usually glaucous.

terminal, 3–70-flowered cymes;

bracts elliptic to lanceolate, 7–65 mm, herbaceous.

terminal, (1–)2–21-flowered cymes;

bracts narrowly lanceolate, 2–7 mm, herbaceous or scarious with green midrib, not ciliate.

erect in flower, often deflexed at base in fruit, 5–40 mm, softly pubescent.

ascending, 30–100 mm, glabrous.

(8–)10–12 mm diam.;

sepals 5, with midrib, ovate, 3.5–6 mm, margins narrow, scarious, apex obtuse to acute, softly and often sparsely pubescent;

petals 5, 4–8 mm, longer than sepals;

stamens 10;

styles 3, ascending, 2.5 mm.

12–18 mm diam.;

sepals 5, distinctly 3-veined, lanceolate, 6–8 mm, margins wide, scarious, apex acute, glabrous;

petals 5, 7–10 mm, 1.5–2 times as long as sepals;

stamens 10;

styles 3, erect, 5–7 mm;

stigmas club-shaped.

green to straw colored, broadly ovoid, 3.5–5.5 mm, ca. equaling sepals, apex obtuse, opening by 6 valves;

carpophore absent.

green to straw colored, ovoid-oblong, 8–10 mm, ± equaling sepals, apex acute, opening by 6 valves;

carpophore absent.

brown, obliquely reniform, 1.5–2 mm diam., coarsely sulcate-papillate.

dark reddish brown, round, 1.2–1.4 mm diam., tuberculate;

tubercles shallow, round.

= 30.

= 130–188 (Europe), ca. 198.