UW Burke Herbarium species comparison

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Prunus maritima

Prunus americana

American plum, wild plum
Habit Shrub or small tree, 1-10 m. tall, some of the branches sharp-pointed, the bark deep brownish-purple.
Leaves

Leaves alternate, deciduous, the petioles stout, pubescent, 5-12 mm. long, the blades lanceolate to elliptic, acuminate, acute at the base, serrate, glabrous, often hairy beneath, 4-10 cm. long.
Flowers

Flowers 2-4 in umbels, the pedicels slender;

calyx reddish tinged, the 5 lobes 2.5-3.5 mm. long, about equal to the tube, pubescent on the upper surface, oblong-lanceolate, serrulate;

petals 5, white, elliptic-oblong, 7-9 mm. long;

stamens about 25;

pistil 1, simple.
Fruits

Drupe orange to purplish-red, the flesh yellow, 1.8-2.5 cm. long.

Prunus maritima

Prunus americana
Flowering time April-May
Habitat Along watercourses, and on open or wooded, moist or dry areas from the plains into the lower mountains.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in southcentral and southeastern Washington; Washington to Oregon, east to the Rocky Mountains, and further east across North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Native and introduced from further east of Washington
Conservation status Not of concern
Sibling taxa
P. americana, P. armeniaca, P. avium, P. cerasifera, P. cerasus, P. domestica, P. dulcis, P. emarginata, P. laurocerasus, P. lusitanica, P. mahaleb, P. padus, P. persica, P. ×pugetensis, P. spinosa, P. tomentosa, P. virginiana, P. yedoensis
P. armeniaca, P. avium, P. cerasifera, P. cerasus, P. domestica, P. dulcis, P. emarginata, P. laurocerasus, P. lusitanica, P. mahaleb, P. padus, P. persica, P. ×pugetensis, P. spinosa, P. tomentosa, P. virginiana, P. yedoensis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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