Alnus rubra f. pinnatisecta
Cutleaf Red Alder
Native to (or naturalized in) Oregon:
- Deciduous tree, leaves deeply pinnately lobed, 5-7 pairs of oblong-ovate to oblong lobes.
- Sun or partial shade.
- Hardy to USDA Zone 5 Found in 1938 by T. J. Starker (Oregon State College) 16 miles northwest of Portland, Oregon [J. of Forestry 37:415-417(1939)]. In cultivation since about 1942.
- Dallas, Oregon: Delbert Hunter Arboretum and Botanical Garden
- Portland, Oregon: Hoyt Arboretum