Allium macrum

Classification System: APG IV

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

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

Allium macrum S.Watson
Synonyms

Allium equicaeleste H.St.John

Distribution
Native distribution areas:

Continental: Northern America
Oregon; Washington

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References

Watson, S., Proc. Amer. Acad. Arts 14: 233 1879.
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.

Links

International Plant Names Index. 2017. Allium macrum. Published online. Accessed: Sep. 10 2017.
The Plant List 2013. Allium macrum in The Plant List Version 1.1. Published online. Accessed: 2017 Sep. 10.
Tropicos.org 2017. Allium macrum. Missouri Botanical Garden. Published online. Accessed: 10 Sep. 2017.
Govaerts, R. et al. 2017. Allium macrum in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2017 Sep 10. Reference page.

Vernacular names
English: rock onion

Allium macrum, the rock onion, is an American species of wild onion native to the eastern and central parts of the US States of Oregon and Washington. It grows on gravelly soils at elevations up to 1400 m.[2][3] It is a perennial herb.[4]

Allium macrum produces round to egg-shaped bulbs up to 2 cm long. Flowers are white with a green stripe running the length of each tepal. Anthers and pollen are yellow.[2][5][6][7]
References

Tropicos
Flora of North America v 26 p 267, Allium macrum
BONAP (Biota of North America Program) floristic synthesis, Allium macrum
"Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org.
Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1969. Vascular Cryptogams, Gymnosperms, and Monocotyledons. 1: 1–914. In C. L. Hitchcock Vascular Plants of the Pacific Northwest. University of Washington Press, Seattle.
Watson, Sereno. 1879. Proceedings of the American Academy of Arts and Sciences 14: 233.
St. John, Harold. 1931. Proceedings of the Biological Society of Washington 44(10): 31–32.