UW Burke Herbarium species comparison

Leaves alternate, oval and pointed, finely serrate, green above and somewhat downy beneath, with 2 conspicuous red glands at the top of the petiole.

Leaves alternate, deciduous, the petioles puberulent, 8-15 mm. long, the blades oval to broadly elliptic-ovate, 2-5 cm. long, abruptly acute, with fine, rounded, gland-tipped teeth, glabrous and pale green.

Inflorescence a loose cluster of 2-6 flowers;

petals 5, white, up to 15 mm. long;

stamens 20-30;

pistil 1.

Flowers 4-12 in short, leafy-bracteate racemes, the pedicels up to 2 cm. long;

calyx greenish-white, the 5 lobes entire, oblong-lanceolate, 3 mm. long, equal to the tube;

petals 5, white, oblanceolate, 7-9 mm. long;

stamens about 20;

pistil 1, simple.

Fruit a drupe, globose, yellow, becoming dark red, strongly acid.

Drupe ovate, 6-8 mm. long, nearly black.