Native to (or naturalized in) Oregon:
- Deciduous tree, 15-30 ft (4.5-9 m), rounded, dense, delicate slender branches, thorny (thorns thin, 2.5-7.5 cm long). Leaves simple, 2.5-7.5 cm long, 3-5 lobed, sharply serrate, reddish purple when unfolding changing to a lustrous dark green, fall color orange to scarlet. White flowers with pink anthers, blooms profusely, in terminal or axillary clusters. The last hawthorn to flower. Bright red glossy fruit, 6-8 mm across, 3-5 nutlets (seeds) per fruit; persisting all winter.
- Sun, moderate root system easy to garden under. Protect from wind
- Hardy to USDA Zone 3 Has a wide native range across the middle latitudes of the United States from Missouri to Maryland and southward (to Louisiana and Florida) but is not particularly abundant (Flora of North America). Considered the dainties of Hawthorns, and there are hundreds.
- phaenopyrum: Greek, from phaeno, visible; apparently meaning having an appearance of pear (pyrus), possibly referring to their similar flowers
- Washington Hawthorn: The tree was grown on a large scale by a Georgetown nurseryman and became popular around Washington D.C. in the late 1700's and apparently took on the name of the city.
- Corvallis: east and west ends of the parking lot west of the Methodist Church on Monroe Ave., between 12th and 13th Streets.
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