Flora of North America species comparison

erect (usually herbaceous).

usually erect.

petioles 0–3 mm;

blades narrowly ovate or obovate to elliptic or spatulate, 15–25(–45) × 3–8(–15) mm, margins rarely toothed, faces usually ± strigose to scabrellous, gland-dotted.

petioles 0–2 mm;

blades lance-linear to linear, 12–25(–45) × 1–4(–7+) mm, margins entire, faces scabrellous to hispidulous, gland-dotted.

1–2 mm.

0–1 mm.

± hemispheric, 2–3 mm.

± prismatically turbinate, 2.5–3 mm.

3–5(–8);

corollas 0.5–1.5 mm.

0–2+;

corollas 0.3–0.8+ mm.

outer 3–5 ± connate, ± herbaceous.

outer 3–5 ± connate, ± herbaceous.

in ± racemiform arrays.

in ± spiciform arrays.

2.5–3 mm.

2–3 mm.

linear, 1.5–2 mm.

linear, 1.5–2 mm.

staminate florets 4–8(–20+);

corollas 2–2.5 mm.

staminate florets 2–5+;

corollas 1.5–2 mm.

= 36, 54.

= 32.