Flora of North America species comparison

erect, usually branched from near base and in inflorescence.

erect, usually unbranched, sometimes branched from base.

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

proximal usually opposite, distal alternate, rarely all alternate, appressed-ascending;

stipular glands absent;

blade linear-oblanceolate or oblanceolate, 10–20 × 1–3.2 mm, margins entire, not ciliate, apex sharply acute.

open panicles.

corymbs.

10–25 mm.

0.5–3.5 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 persistent, narrowly lanceolate, outer sepals 2.5–4.5 mm, inner somewhat shorter, broader than outer, margins not scarious, inner conspicuously glandular-toothed, outer entire, apex acute;

petals lemon yellow, obovate, 5.5–9.5 mm;

stamens 2 mm;

anthers 0.5–1.5 mm;

staminodia absent;

styles distinct, 2–4.5 mm;

stigmas capitate.

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

pyriform or ovoid, 2–3.4 × 2–3 mm, apex obtuse or minutely 5-apiculate, dehiscing freely into 10, 1-seeded segments, segments persistent on plant, false septa nearly complete, proximal margins not ciliate.

2.5–3 × 1.5–2 mm.

1.6–2.5 × 0.7–1.2 mm.

= 30.