Flora of North America species comparison

erect, usually branched from near base and in inflorescence.

erect to ascending, unbranched proximally, few to many branched distal to middle.

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

proximal 0–13 pairs opposite (often fallen at anthesis), distal alternate, appressed-ascending;

stipular glands usually present, very rarely absent;

blade of proximal leaves oblanceolate or spatulate, of distal ones linear, 7–30 × 1–3 mm, margins entire, not ciliate, apex acute to subulate;

midrib prominent, marginal nerves less conspicuous.

open panicles.

racemelike;

bracts glandular-toothed, not ciliate.

10–25 mm.

1.3–4.7 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, outer sepals oblong, 2.3–3.7 mm, margins not scarious, all very coarsely, irregularly glandular-toothed (inner sepals more closely and finely toothed than outer), apex acute;

petals pale yellow, obovate, 5–10 mm;

stamen length unknown;

anthers 0.3–0.7 mm;

staminodia absent;

styles connate 0.2–1.8 mm at base, 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.

ovoid, 2.5–3.3 × 2.1–3 mm, apex rounded to acute, dehiscing freely into 10, sharp-pointed, 1-seeded segments, segments persistent on plant, false septa incomplete, margins prominently ciliate.

2.5–3 × 1.5–2 mm.

1.6–2.1 × 0.8–1.1 mm.

= 30.

= 30.