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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Crepis (occidentalis)

Jim Barner
Seed Extractory Manager
USDA FS - R6 Bend Seed Extractory
63095 Deschutes Market Rd.
Bend, Oregon 97701
541-383-5481
541-383-5498 (fax)
jbarner@fs.fed.us
http://fsweb-ochdes.r6.fs.fed.us/seedextractory/ex
Family Scientific Name: Asteraceae
Family Common Name: Aster family
Scientific Name: Crepis occidentalis Nutt.
Common Name: Largeflower hawksbeard
Species Code: CROC
Ecotype: USFS, Boise National Forest, Lucky Peak Nursery, Boise, Idaho: 2842 ft. elevation
Propagation Goal: seeds
Propagation Method: seed
ProductType: Propagules (seeds, cuttings, poles, etc.)
Time To Grow: 0
Propagule Collection: Very small lot, 0.042 pounds, grown and harvested at USFS, Lucky Peak Nursery, Boise, Idaho.
Propagule Processing: METHOD OF CLEANING: Seed lot is first processed using a Westrup Model LA-P Laboratory Clipper/De-awner, to remove seed from flower head. Seed is then air-screened, using an office Clipper with a top screen: 1/14 x 1/2 slot and a bottom screen: 1/18 round, medium speed, medium air. Lot is finished using an air column separator, Oregon Seed Blower, to remove remaining nonviable seed and inert material. Number of Seeds per Pound: 104,700, Purity: 98%, X-Ray 100 Seeds: 80% Filled
Harvesting, Storage and Shipping: Storage: Cold Storage, 33-38 Degrees Fahrenheit
Other Comments: Very small seed lots present a cleaning and testing challenge. Different types of equipment, designed for smaller lots, are used, results may not be typical.

Citation:

Barner, Jim. 2009. Propagation protocol for production of Propagules (seeds, cuttings, poles, etc.) Crepis occidentalis Nutt. seeds USDA FS - R6 Bend Seed Extractory Bend, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2025/04/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.