Flora of North America species comparison

basal produced; flowering erect, 25–40 cm, sparsely sericeous.

basal produced; flowering erect, 15–70 cm, sericeous.

of flowering stems opposite to subopposite;

blade linear-lanceolate to narrowly oblanceolate, 10–20 × 1–1.5 mm, apex acute, usually indurate, abaxial surface sparsely pilose on midvein and margins, adaxial glabrous.

of flowering stems alternate or subopposite;

blade linear to narrowly elliptic, 4–15 × 0.3–1.5 mm, apex acute, abaxial surface pilose on midvein and margins, adaxial glabrous.

1 per axil, 1–2 mm.

1 per axil, 1–1.8 mm.

calyx 1.8–2 mm, indurate, shiny, yellow-brown basally in fruit, outer sepals shorter than or equaling inner.

calyx 0.8–1.1 mm, outer sepals usually ± equaling or longer than, occasionally shorter than, inner.

ellipsoid to ovoid, 1.5–2 × 1–1.2 mm, ± equaling to slightly longer than calyx.

ellipsoid to obovoid, 1.6–1.9 × 0.9–1.1 mm, longer than calyx, with persistent stigma.

(1–)2(–3).

1(–2).