Jepson Flora Project: Jepson Interchange for California Floristics    
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Stipa capensis Thunb.

Information from the Index of California Plant Names (ICPN)
Initial Editorial Analysis 18 Aug 2011
Source of Report for California Hrusa et al., Madrono 49(2)61-98. 2002: DIST: DSon (Coachella Valley): Hrusa et al. Current Status: Naturalized in wildlands: DOC: Riverside Co.: Coachella Valley/San Jacinto Mtns. Foothills. Alluvial fan of Chino Canyon along the Palm Springs tram road, N of the road 14 telephone poles above Hwy 111 (Palm Canyon Dr.), el. 300m/950ft, 33°51'N; 116°34'W, T04S R04E Sec. 04, SB. Creosote bush scrub on rocky alluvium cut by arroyos; with Larrea, Hymenoclea, Hyptis, Ambrosia, Justicia, etc., three patches seen, ca. 200-300 individuals. Mar. 19, 1995, A.C. Sanders 16148, with G. Helmkamp, P. MacKay, et al. (UCR), det. by M. Barkworth; loc. cit. Apr. 6, 1995, A. C. Sanders and M. Skinner 16393 (UCR); Coachella Valley, Chino Cyn., foothills of the San Jacinto Mtns., along the road to the Palm Springs Tram 1.5 mi. above Hwy. 111. Palm Springs 7.5' quad., 33°50'34"N; 116°34'51"W, T04S, R04E, Sec. 04, SB. El. 1200ft/366m, rocky loam on alluvial fan, creosote bush scrub with Larrea, Ambrosia dumosa, Opuntia echinocarpa, Krameria grayi, etc., common annual on roadside and spreading into desert vegetation. Apr. 15, 2000, A.C. Sanders 23321, with Giles Waines, Mitch Provance, T.B. Salvato, et al. (UCR); Cathedral Canyon, border of Rancho Mirage [and] Cathedral City, 33°45'N; 116°30'W. Mar. 11, 1997, Denise Woodard and Gilbert Goodlet s.n. (UCR), det. by A.C. Sanders; San Jacinto Mtns., S of Chino Canyon, at NW end of Palm Springs, 33°50'20"N; 116°33'45"W, T04S, R04E, Secs. 09 and 10, SB. El. 1148 ft/350m, flat areas with Hyptis, Psorothamnus schottii, some creosote bush and smoke trees, locally abundant in disturbed places. Mar. 18, 1997, J. Wear and N. Moorhatch s.n. (UCR), det. by A.C. Sanders: Notes: First records for California and North America of this annual Stipa with long awns and sharp callus tips. This species will be a severe nuisance if it becomes widely established. The seeds readily become caught in the fur of dogs and other animals and so will probably create veterinary problems, and will certainly be subject to ready dispersal. The very sharp callus can easily pierce human skin and cause unpleasant sores. This plant is obviously a Stipa in the broad sense, but its distinctly annual habit will quickly distinguish it from all other known Californian Stipeae. Acc. to M. Barkworth, in the narrow taxonomic sense this plant is an Achnatherum, but the published combination in that genus by P. Beauv (Essai Agrostogr. 146) is invalid, having as its basionym Milium capense L. and not Stipa capensis Thunb. Thus, in Achnatherum there is not currently an available epithet.
Initial Editorial Comments according to Hrusa et al., in California naturalized in wildlands, in DSon (Coachella Valley) (28 Feb 2003); in The Jepson Manual [Ed. 1], California members of Stipa treated in Achnatherum, but according to Mary Barkworth [The Jepson Manual [Ed. 1] author of Achnatherum], as reported by Hrusa et al., the existing combination in that genus, Achnatherum capense P. Beauv (Essai Agrostogr. 146), is invalid.
Editorial Summary and Current Status
Editorial Summary addition, for taxon reported as naturalized in California since The Jepson Manual [Ed. 1]
Current Status JFP-2, accepted name for taxon naturalized in CA
Current Status Authority The Jepson Manual [Ed. 2]
Current Status Date 18 Aug 2011
List of names for this Current Status category
List of ICPN names in Stipa
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Stipa

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