UW Burke Herbarium species comparison

Leaves alternate, linear, 6-15 mm. long and 0.5 mm. wide.

Leaves opposite, usually several pairs, rhombic-obovate to oblanceolate, 4-15 mm. long and 1-7 mm. wide, narrowed to short petioles.

Flowers 4-12 in small axillary racemes, the racemes exceeding the leaves;

pedicels recurved, 2-4 mm. long;

sepals 2, 2 mm. long;

petals usually 5, white, about equal to the sepals;

stamens usually 3;

style 1, stigmas 3, linear.

Flowers 3-7 in lax racemes, the pedicels recurved, slender, mostly 3-10 mm. long;

sepals 2, 1 mm. long;

corolla white, about equal to the sepals, the tube about equal to the 5 lobes, which are often unequal in length and width;

stamens 3, attached to the corolla tube;

style 1, stigmas 3, elongate

Flowers 4-12 in small axillary racemes, the racemes exceeding the leaves;

pedicels recurved, 2-4 mm. long;

sepals 2, 2 mm. long;

petals usually 5, white, about equal to the sepals;

stamens usually 3;

style 1, stigmas 3, linear.

Capsule obovoid, 1.5 mm. long.