Flora of North America species comparison

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

spreading to suberect, branched at base.

divergent;

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

opposite near base or alternate throughout, divergent to widely ascending;

stipular glands present;

blade linear to narrowly linear-lanceolate, 10–30 × 1–3 mm, margins entire, ciliate, apex apiculate.

open panicles.

panicles;

bracts with irregular scarious margins.

erect in fruit, to 20–25 mm.

3–8 mm, stout.

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, inner sepals somewhat shorter than outer, regularly and delicately glandular-toothed, outer sepals ovate or obovate, 6–8 mm, margins widely scarious, undulate or crenate, with sessile gland near apex of each crenation, apex conspicuously aristate;

petals yellow, grading to reddish near base, obovate, 9–18 mm;

stamens 5–8 mm;

anthers 1–2 mm;

with or without staminodia;

styles connate nearly to apex, 5–10 mm;

stigmas capitate.

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

ovoid, 3.5–4.5 × 3–3.8 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa incomplete, united more than halfway, proximal part membranaceous with basal, 5-sided cartilaginous plates, distal part cartilaginous, constituting more than 1/2 of false septum, margins not ciliate.

4–6 × 2.5–3 mm.

2.3–2.8 × 1–1.3 mm.

= 30.

= 30