Collinsia rattanii

Annuals 8–40 cm. Stems erect to ascending. Leaf blades ± linear, length usually 6+ times width, margins entire, rarely crenate. Inflorescences scaly and spreading-glandular; nodes 1–3(–5)-flowered; flowers not crowded; distalmost bracts linear, 2–5 mm. Pedicels ascending, longer than calyx, visible. Flowers: calyx lobes lanceolate to ovate, equal to capsule, ape× subacute to slightly rounded; corolla purplish lavender, rarely white, 4–8 mm, glabrous or keel sometimes sparsely glandular; banner length 0.8–1 times wings, lobe base with folds bulging less than 0.5 mm away from throat opening, reflexed portion length 1 times throat; throat barely angled to tube, pouch ± hidden by calyx; stamens: abaxial filaments glabrous, adaxials hairy at base, basal spur 0(or 1). Seeds (3 or)4–6, oblong to ovate, 1.5–2 mm, margins thickened, inrolled. 2n = 14.

Phenology: Flowering May–Jul(–Aug).
Habitat: Open coniferous forests.
Elevation: 60–1500 m.

Calif., Oreg., Wash.

Discussion

Collinsia rattanii is best distinguished from C. linearis by corolla shape (floor of throat nearly parallel to abaxial side of calyx and reflexed portion of adaxial lip about equal to throat) and smaller size.

Selected References

None.

Lower Taxa