Flora of North America species comparison

erect, usually branched from near base and in inflorescence.

erect, usually multiple from base, sometimes 1, unbranched or few-branched proximal to inflorescence, slender, wiry, prominently ribbed in inflorescence.

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

early deciduous, alternate or basalmost opposite, appressed-ascending;

stipular glands present, reddish, becoming dark;

blade linear, 5–15 × 0.5–1.2 mm, margins entire or with scattered minute marginal glands, not ciliate, apex acute; 1-nerved.

open panicles.

cymes.

10–25 mm.

0–2 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, lanceolate to ovate or inner ones sometimes obovate, outer sepals 2.5–3.6 mm, margins hyaline, not scarious, all glandular-toothed, apex acuminate;

petals yellow, obovate, 4–6.5 mm;

stamens 3 mm;

anthers 0.3–0.7 mm;

staminodia present or absent;

styles distinct, 2–3 mm;

stigmas capitate.

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

pyriform, 2–2.5 mm diam., apex pointed, dehiscing readily into 10, 1-seeded segments, segments falling freely, false septa incomplete, margins of septa ciliate.

2.5–3 × 1.5–2 mm.

1–1.5 × 0.6–1 mm.

= 30.

= 36.