Flora of North America species comparison

erect (usually herbaceous).

sprawling to erect (usually woody at bases).

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 0–3(–10) mm;

blades lance-elliptic to oblanceolate, 2–5(–10) cm × 5–10(–18) mm, margins usually entire, rarely toothed, faces sparsely strigose to scabrellous, gland-dotted.

1–2 mm.

2–3+ mm.

± hemispheric, 2–3 mm.

± hemispheric, 2.5–3.5 mm.

3–5(–8);

corollas 0.5–1.5 mm.

5;

corollas 0.5–1 mm.

outer 3–5 ± connate, ± herbaceous.

outer 5 distinct, ± herbaceous.

in ± racemiform arrays.

in ± racemiform arrays.

2.5–3 mm.

2–2.5 mm.

linear, 1.5–2 mm.

linear to cuneiform, 1.5–2.5 mm.

staminate florets 4–8(–20+);

corollas 2–2.5 mm.

staminate florets 5–12(–20);

corollas 1.5–2.5 mm.

= 36, 54.