UW Burke Herbarium species comparison

Basal leaves crowded is rosettes, oval, some less than 5 mm. long, rice-like in appearance, others more elongate and spatulate, covered with short projections;

cauline leaves near the base narrowly spatulate-oblanceolate, up to 25 mm. long, reduced upward to obovate and 6 mm. long.

Leaves alternate, ovoid to ellipsoid, slightly flattened, 4-9 mm. long, incurved, mostly deciduous by flowering time.

Flowers numerous in several-rayed, spreading cymes, sessile;

sepals 5, triangular to lance-ovate, 1-1.5 mm. long;

petals 5, distinct, narrowly elliptic-lanceolate, acuminate, 5-8 mm. long;

stamens 10, shorter than the petals;

pistils 5.

Flowers mostly in compact cymes;

sepals 5, triangular-lanceolate, 2-3.5 mm. long;

petals 5, yellow, distinct, lanceolate and pointed, 6-7 mm. long;

stamens 10, spreading, about 2 mm. shorter than the petals, 5 attached to the base of the petals.

Follicles 5, widely spreading, basally united for 1 mm., covered with glandular projections.

Follicles 5, erect, united at the base, each with a small gland at the base, and tipped by the erect or divergent, tapered style.

Flowers with more than 5 follicles, as shown in the photos, are rare.