Arabis suffrutescens horizontalis (Greene) Rollins
Creeping woody rock cress, Horizontal woody rockcress
Taxonomy & Nomenclature
Synonym/s: Boechera horizontalis (Greene) Windham & Al-Shehbaz
Conservation Status
Last record: Oregon (1950) & California (1951)
Rediscovered in 1984
Distribution
Oregon, USA
Biology & Ecology
Hypodigm
Media
References
Flora of North America Editorial Committee. 2010. Flora of North America North of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.
Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
Kagan, Jimmy and Vrilakas, Susan. (1993). Extinct and Extirpated Plants from Oregon. Kalmiopsis [1993]: 12-16.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Meinke, R.J. 1982. Threatened and Endangered Vascular Plants of Oregon: An Illustrated Guide. U.S. Fish and Wildlife Service, Region 1, Portland, Oregon. 326 pp.
Rollins, R.C. 1993. The Cruciferae of continental North America: Systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, California. 976 pp.
Siddall, J. L., Chambers, K. I. and Wagner, D. H. (1979). Rare, threatened and endangered vascular plants in Oregon — an interim report. Oregon Natural Area Preserves Advisory Committee, Division of State Lands. 109 pp.
Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.
Windham, M.D., and I. A.Al-Shehbaz. 2007. New and noteworthy species of Boechera (Brassicaceae) II: Apomictic hybrids. Harvard Papers in Botany 11: 257-274.