Flora of North America species comparison

stiffly spreading-ascending, branched at base and distal to middle.

ascending or erect, usually unbranched.

alternate or proximalmost opposite, crowded at base, appressed-ascending;

stipular glands absent;

blade oblanceolate to lanceolate or linear-lanceolate, 8–17 × 1.2–2.3 mm, margins entire, not ciliate, apex apiculate.

blade linear or linear-lanceolate, 5–20 × 1–3 mm.

few-flowered racemes.

much-branched panicles.

(5–)20–30(–60) mm.

spreading, 5–25 mm.

sepals persistent, lanceolate to lance-ovate, 4.5–7 mm, margins narrowly scarious, inner sepals conspicuously toothed, outer ones very coarsely glandular-toothed, sometimes sparsely so, apex acuminate or narrowly acute;

petals lemon yellow, obovate, 9–15 mm;

stamens 5–7 mm;

anthers 1–2 mm;

staminodia absent;

styles connate to within 0.8–3 mm of apex, 5.7–9 mm;

stigmas capitate.

heterostylous;

inner sepals ovate-lanceolate or ovate, 4.5–5.5 mm, margins glabrous, apex obtuse, outer ones lanceolate or ovate-lanceolate, 3.5–4.5 mm, narrower than inner ones, margins glabrous, apex acute or acuminate;

petals blue, obovate or obovate-lanceolate, 10–25 mm;

stamens 5 mm, anthers 2 mm (long-styled morph) or stamens 6.5 mm, anthers 1.8 mm (short-styled morph);

styles distinct, 8 mm (long-styled morph) or 2.5 mm (short-styled morph);

stigmas capitate.

ovoid (distinctly longer than broad), 3.5–4.6 × 2.5–3.1 mm, apex sharp-pointed, dehiscing completely into 5, 2-seeded segments (very easily crushed), segments persistent on plant, false septa incomplete, proximal margins terminating in loose fringe, cartilaginous plates at base of segments poorly developed.

subglobose, 5–7 mm diam., apex acute to obtuse, segments persistent on plant, margins ciliate or not.

2.5–3 × 0.9–1.2 mm.

3–4.2 × 1.7–2 mm.

= 30.

= 18.