Pleuropogon oregonus Chase (1938:52)
Oregon semaphoregrass
Taxonomy & Nomenclature
Synonym/s: Lophochlaena oregona (Chase) But in Madroño 33: 146 (1986)
Conservation Status
Last record: 1901 (Ripley, 1975:45); 1936 (Li & Adair, 1997:125)
Rediscovered in 1979 (Li & Adair, 1997:125)
Distribution
Lake County & Union County, Oregon, USA
Biology & Ecology
Hypodigm
Media
References
Ayensu, E. S. and Defilipps, R. A. (1978). Endangered and Threatened Plants of the United States: 1-403. Smithsonian Institution and WWF-US, Washington DC.
But, P. P. H., Kagan, J., Crosby, V. L. and Shelly, J. S. (1985). Rediscovery and reproductive biology of Pleuropogon oregonus (Poaceae). Madroño 32(3): 189-190.
Clayton, W. D., Harman, K. T. and Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
Flora of North America Editorial Committee. (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. https://doi.org/10.1038/s41559-019-0906-2 [Supplementary Dataset 1]
Kagan, Jimmy and Vrilakas, Susan. (1993). Extinct and Extirpated Plants from Oregon. Kalmiopsis [1993]: 12-16.
Li, Shiyou and Adair, Kent T. (1997). Species Pools of Seed Plants in Eastern Asia and North America. Nacogdoches, Texas: AIthur Temple College of Forestry. [chapter 8: Species extinction, pp. 121-131]
Oregon Natural Heritage Program. (2001). Rare, Threatened and Endangered Plants and Animals of Oregon. Oregon Natural Heritage Program, Portland, Oregon. 94 pp. (98 pp. PDF).
Ripley, S. Dillon. (1975). Report on endangered and threatened species of the United States. House Document 94-51: 1-200 [45].
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.
https://en.wikipedia.org/wiki/Pleuropogon_oregonus