Flora of North America species comparison

fascicled, spreading, branching throughout, 1–4.5 dm.

fascicled, erect, branching throughout, 1.5–6(–9) dm.

alternate;

stipules linear, to 1 mm;

petiole absent;

blade usually obovate-spatulate, rarely narrowly elliptic, 1–-4 × 0.5–1.5 cm, base cuneate, margins coarsely spinulose-dentate, teeth without prominent blackened tips, not incurved, apex rounded to obtuse;

midrib prominent, secondary veins obscure.

alternate;

stipules linear-lanceolate, 0.5–1 mm;

petiole absent;

blade linear, (1–)2–3(–3.5) × 0.1–0.2(–0.3) cm, base acute, margins entire or remotely minutely denticulate, teeth without prominent blackened tips, not incurved, apex acute;

venation not prominent.

pedunculate, 2.5–-5 cm;

staminate flowers ± widely spaced, 1 per node;

pistillate flowers 3–4, widely spaced;

bracts ovate, 1 mm, apex mucronate, glands patelliform, ± sessile, 0.7 mm diam.

sessile or short-pedunculate, (1.5–)2–4.5(–7) cm, staminate flowers widely spaced, 1 per node;

pistillate flowers 3–7, widely spaced;

bracts deltate to broadly ovate, to 2 mm, apex acuminate, glands cyathiform, long-stalked, to 1 mm diam.

calyx 1 mm.

calyx to 1 mm.

sepals fugacious, 3, minute;

styles connate only at base, 1.5 mm.

sepals 0;

styles connate only at base, 1.5–-2 mm.

ovoid-pyriform, 4 × 5 mm, deeply 3-lobed;

lobes of gynobase to 1 mm;

columella persistent.

globose-ovoid, 2–2.5 × 3–3.5 mm, deeply 3-lobed;

lobes of gynobase 1–1.5 mm;

columella sometimes persistent.

gray to black, ellipsoid, 2.5 × 2 mm, smooth;

caruncle minute.

gray or gray-brown, globose, 2–2.5 × 1.5 mm, smooth;

caruncle absent.

= 22.