Flora of North America species comparison

erect, unbranched or few-branched at base (all flowering).

stiffly spreading-ascending, slender, broomlike, branched throughout.

divergent;

blade linear to linear-lanceolate, 10–40 × 1.5–5 mm.

alternate or proximalmost opposite, proximal leaves spreading, distal leaves appressed-ascending;

stipular glands usually present;

blade linear, 5–20 × 0.3–1.1 mm, margins entire, not ciliate, apex acute.

open panicles.

diffuse panicles, branches relatively long, stiffly spreading-ascending.

erect in fruit, to 20–25 mm.

6–30 mm, slender.

homostylous;

sepals ovate, 6–9 mm, margins of inner sepals minutely ciliate, outer ciliate, apex acuminate;

petals usually blue, rarely white, obovate, 10–15 mm;

stamens 5–7 mm;

anthers 1–1.5 mm;

staminodia present;

styles distinct or connate at base, 3–6 mm;

stigmas linear or clavate.

sepals deciduous, outer linear-lanceolate, 5.5–9 mm, apex attenuate, inner somewhat broader, shorter, margins narrowly scarious, glandular-toothed, apex awn-tipped;

petals faintly maroon at base, otherwise yellow to yellow-orange throughout, obovate, 8–12 mm;

stamens 5–7 mm;

anthers 0.7–1.1 mm;

staminodia absent;

styles connate nearly to apex, 4.5–7 mm;

stigmas capitate.

ovoid to subglobose, 6–10 × 5–10 mm, apex rounded, dehiscing incompletely, segments falling freely, margins ciliate or not.

narrowly ellipsoid, 3.5–4.5 × 2.5–3 mm, thin-walled, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not, or only sparsely, ciliate.

4–6 × 2.5–3 mm.

2.5–3 × 0.8–1 mm.

= 30.

= 30.