Alnus viridis ssp. crispa
Alnus viridis (Chaix) DC. ssp. crispa (Aiton) Turrill
Green Alder, Mountain Alder, Sitka Alder
Betulaceae (Birch Family)
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.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Complexity: Simple
Size Class: 6-12 ft.
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
DistributionUSA: MA , ME , MI , MN , NC , NH , NY , PA , TN , VT , WI , WY
Canada: AB , MB , NB , NL , NS , ON , SK
Native Distribution: Lab. to AK, s. to New England mts., n. NY, n. MI, n. MN, 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 DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Mt. Cuba Center - Hockessin, DE
From the ArchiveWildflower Newsletter 1990 VOL. 7, NO.2 - Preservation Blooms in Recreated Prairies, New Wildflower Center Prairie Welcome...
Additional resourcesUSDA: Find Alnus viridis ssp. crispa in USDA Plants
FNA: Find Alnus viridis ssp. crispa in the Flora of North America (if available)
Google: Search Google for Alnus viridis ssp. crispa
MetadataRecord Modified: 2007-01-01
Research By: TWC Staff