Allium constrictum

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Amaryllidaceae
Subfamilia: Allioideae
Tribus: Allieae
Genus: Allium
Species: Allium constrictum
Name

Allium constrictum (Ownbey & Mingrone) P.Peterson
References

USDA, NRCS. 2006. The PLANTS Database, 6 March 2006 (http://plants.usda.gov). Data compiled from various sources by Mark W. Skinner. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Allium constrictum, the Grand Coulee Onion, is a plant species endemic to the US State of Washington. It is known from only three counties in the east-central part of the state: Douglas, Grant, and Lincoln. It grows on dry, sandy soils at elevations of 300–500 m.[1]

Allium constrictum produces egg-shaped bulbs up to 8 mm long. Flowers are up to 10 mm across, pink to rose with green midrib; anthers and pollen blue to gray [1][2][3][4]
References

Flora of North America v 26 p 267, Allium constrictum
Peterson, Paul M., Annable, Carol R., & Rieseberg, Loren H. 1988. Systematic Botany 13(2): 211.
Ownbey, F.M., & L.V. Mingrone. 1969. Vascular Plants of the Pacific Northwest 1: 747.
Peterson, PM, CR Annable, LH Rieseberg. 1988. Systematic relationships and nomenclatural changes in the Allium douglasii complex. Systematic Botany 13:207-214. Archived 2010-09-28 at the Wayback Machine