The Pacific crab apple is a small deciduous tree or shrub that is found from Alaska south to California.
Tall shrub or small tree, 2-8 (12) m tall; branches armed with stiff, sharp, thorn-like spur-shoots; young twigs curly-hairy; bark brown, rough, shredding, the older bark deeply fissured.
Alternate, deciduous, lance- to egg-shaped, long-stalked, the blades 3-9 cm long, sharp-pointed at the tip, saw-toothed and often irregularly lobed, green and smooth or hairy above, paler and hairy below.
Inflorescences flat-topped clusters of 5 to 12 long-stalked flowers on short spur-shoots; corollas white to pink, fragrant, about 2 cm across, the petals 5, egg-shaped, 8-14 mm long; calyces hairy, 5-lobed, the lobes lanceolate, bent back, 3-5 mm long, deciduous; ovaries inferior; styles usually 3, smooth; stamens about 20.
Fleshy pomes (small apples), ellipsoid to egg-shaped, 1-1.5 cm long, green becoming yellow to reddish or purplish, 3- to 4-chambered; seeds 1 or 2 per chamber.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Present from Summer to Fall
Source: The USDA
||Value / Class
Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
of field plots
species was recorded in:
BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in
|CDF(47), CWH(280), ICH(10), SBS(2)|
Source: Klinkenberg 2013
Synonyms and Alternate Names:
Malus diversifolia (Bong.) M. Roem.
Malus fusca var. levipes (Nutt.) C.K. Schneid.
Pyrus fusca Raf.
Pyrus rivularis Dougl. ex Hook.