Flora of North America species comparison

erect, usually branched from near base and in inflorescence.

spreading-ascending, branching basally in inflorescence, sometimes throughout.

blade linear to linear-lanceolate, 5–25 × 1–1.5 mm.

basal leaves opposite, or alternate throughout, spreading;

stipular glands usually present;

blade linear to linear-lanceolate, 10–25 × 1–4 mm, margins entire or few small teeth on distal leaves, not ciliate, apex acute; mostly 3-nerved.

open panicles.

dense, ± flat-topped panicles.

10–25 mm.

4–20 mm.

homostylous;

sepals ovate, 4–5.5 mm, margins of inner sepals minutely ciliate, outer glabrous, apex acute to acuminate;

petals blue, obovate, 6–10 mm;

stamens 4–5 mm;

anthers 1–2.5 mm;

staminodia present or absent;

styles distinct, 2 mm;

stigmas linear or clavate.

sepals deciduous, lanceolate, inner somewhat broader, 6–12 mm, margins of inner sepals densely and delicately glandular-toothed, outer ones scarious, conspicuously and more coarsely but less densely glandular-toothed than inner, apex acute or attenuate;

petals yellow to orange, sometimes reddish below middle, broadly obovate, 11–19 mm;

stamens 4–9 mm;

anthers 1–2 mm;

staminodia absent;

styles connate nearly to apex, 6–9 mm;

stigmas capitate.

broadly ovate to subglobose, 4–6 × 4–6 mm, apex very sharp-pointed, segments ± persistent on plant, margins ciliate.

broadly ovoid to triangular-ovoid, tapering abruptly to flattened base, 3.6–4.7 × 3–4 mm, thick- or thin-walled, apex obtuse, dehiscing into 5, 2-seeded segments, segments blunt or subacute, persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not ciliate.

2.5–3 × 1.5–2 mm.

2.6–3.4 × 1–1.6 mm.

= 30.

= 30.