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Alnus viridis ssp. crispa
Alnus viridis (Chaix) DC. ssp. crispa (Aiton) Turrill
Green alder, Mountain alder, Sitka alder
Synonym(s): Alnus crispa, Alnus crispa var. elongata, Alnus crispa var. mollis, Alnus viridis var. crispa, Alnus ×hultenii, Duschekia viridis
USDA Symbol: ALVIC
A shrub to 9 ft., diminishing in mature height with greater altitude. Pendent, yellow-green male catkins appear before the oval, alternate leaves are fully out. Cone-like female flowers remain on the shrub all winter.
Alders fix nitrogen and thus serve as nutrient-giving pioneers in reclamation projects.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf Complexity: Simple Leaf:
Green Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
, WY Canada: AB
, SK Native Distribution:
Lab. to AK,
s. to New England mts., n. NY,
Man. & n.w. WY; rarely in mts. of TN
& NC Native Habitat:
Bogs; shores; cold woods; balds
Growing ConditionsWater Use: High
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Dry , Wet
CaCO3 Tolerance: Low
Soil Description: Rocky soils
Conditions Comments: Alders fix nitrogen and thus serve as nutrient-giving pioneers in reclamation projects. Soil conditioner - fixes nitrogen.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Mt. Cuba Center
- Hockessin, DE
Record Last Modified: 2007-01-01
Research By: TWC Staff