Asteraceae (Crepis)

Protocol Information for:

Label_title:
Crepis (occidentalis)

Family Names:

Family Scientific Name:
Asteraceae

Family Common Name:
Aster family

Scientific Names:

Genus:
Crepis

Species:
occidentalis

Scientific Classification:

Scientific SubSpecies:

Species Authority:
Nutt.

Scientific SubAuthority:

Authors:

Jim Barner

Common Synonym:

Genus:

Species:

Synonym Classification:

Synonym SubSpecies:

Species Authority:

Synonym SubAuthority:

Other Information:

Common Name:
Largeflower hawksbeard

Species Code:
CROC

Ecotype:
USFS, Boise National Forest, Lucky Peak Nursery, Boise, Idaho: 2842 ft. elevation

General Distribution:

Known Invasiveness:

Propagation Goal:
seeds

Propagation Method:
seed

Product Type:
Propagules (seeds, cuttings, poles, etc.)

Stock Type:

Grow Time:
0

Target Specifications:

Propagation Collection:
Very small lot, 0.042 pounds, grown and harvested at USFS, Lucky Peak Nursery, Boise, Idaho.

Propagation Processing/Propagule Characteristics:
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

Pre-Planting Propagule Treatments:

Growing Area Preparation / Annual Practices for Perennial Crops:

Establishment Phase:

Length of Establishment Phase:

Active Growth Phase:

Length of Active Growth Phase:

Hardening Phase:

Length of Hardening Phase:

Harvesting, Storage and Shipping:
Storage: Cold Storage, 33-38 Degrees Fahrenheit

Length of Storage:

Guidelines for Outplanting / Performance on Typical Sites:

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.

References:

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 2025/06/25). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.

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