ATTACHMENT SS2

REGION 2 SENSITIVE SPECIES EVALUATION FORM

Species: Pectis angustifolia Torr. var. angustifolia narrow-leaf pectis

Criteria Rank Rationale Literature Citations • Anderson 1950 • Barkley 1991 se (Goshen and Platte Cos) WY, e into w NE; thence s through w KS; thence w through e and sw (?) CO. • Clark 1996 Most NE records are from the sw corner, but Keil maps one record from the n-central part of the state. 1 Weber & Wittman (2001b) report species from La Plata in w CO. [Vouchers at KANU from Baca, Lincoln, • Freeman in prep. • Great Plains Flora Association 1977 Distribution B Morgan, and Sedgwick Cos, CO; Meade and Trego Cos, KS; and Deuel, Keith, and Lincoln Cos, NE.] within R2 Status: G4G5; KS SH; WY S1 • Hartman 1997 Confidence in Rank High or Medium or Low • Shaw et al. 1989 • Weber & Wittman 2001a • Weber & Witman 2001b se WY, e into w NE; thence s through w KS; thence s w-most TX into n Mexico; thence n throughout NM; thence n through e CO, and w through n AZ and se-most UT. 2 • Keil 1977 Distribution C outside R2 Confidence in Rank High or Medium or Low Evaluator was unable to find any information about species’ dispersal capability. Seed is equipped with a pappus and may be dispersed by wind or perhaps water, during heavy rains. Dispersal is probably limited by 3 habitat requirements.

Dispersal B Capability Confidence in Rank High or Medium or Low

Evaluator was unable to find any information on species’ abundance within R2. Species does not appear to 4 be particularly abundant where encountered in CO and populations may face local extinction.

Abundance in D R2 Confidence in Rank High or Medium or Low

Evaluator was unable to find any information on population trends in R2.

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Population D Trend in R2 Confidence in Rank High or Medium or Low Observation of herbarium specimen labels at KANU reveal that species is found on gravelly or more often sandy soils, often on loose sands of sandbars, or mixedgrass- or sandsage prairies. Species is annual and 6 probably occupies early successional habitats, requiring moderate amounts of disturbance for populations to

Habitat Trend B persist. Evaluator has observed species to be locally abundant along roadcuts in sandsage prairie in CO, in R2 where habitat is not particularly common but appears largely stable [see caveat in sect 7]. Confidence in Rank High or Medium or Low

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 1 of 3 ATTACHMENT SS2

Species: Pectis angustifolia Torr. var. angustifolia narrow-leaf pectis

Criteria Rank Rationale Literature Citations Ostlie et al. report that sandsage prairie is especially vulnerable to coversion to croplands. However, the 7 primary management practice in species’ habitat types is by livestock grazing. Species appears to require Habitat moderate levels of disturbance, is unlikely to face direct grazing pressures itself, and likely benefits from the • Ostlie et al. 1997 Vulnerability C disturbance created by limited grazing in habitat. or Modification Confidence in Rank High or Medium or Low Annual forb. Flowering and fruiting mid June through early September. Evaluator was unable to find any other information on life history. 8 Life History B and Demographics Confidence in Rank High or Medium or Low Evaluator: Caleb A. Morse, R.L. McGregor Herbarium (KANU), University of Kansas Campus West, 2045 Constant Ave, Lawrence KS 66047 Date: 01/16/02

National Forests in the Rocky Mountain Region where species is KNOWN (K) or LIKELY (L)1 to occur:

South Dakota Colorado NF/NG Kansas NF/NG Nebraska NF/NG Wyoming NF/NG NF/NG Likely Likely Likely Likely Likely Known Known Known Known Known

Arapaho-Roosevelt Samuel R.McKelvie Cimmaron NG X Black Hills NF Shoshone NF NF NF White River NF Halsey NF Buffalo Gap NG Bighorn NF Routt NF Nebraska NF Ft. Pierre NG Black Hills NF Grand Mesa, Uncompahgre, Ogalala NG Medicine Bow NF Gunnison NF San Juan NF X? Thunder Basin NG Rio Grande NF Pawnee NG Pike-San Isabel NF X2 Comanche NG X3 2 KANU catalog # 144923: CO, Chaffee Co: Salida, ca 8000 ft, 31 Aug 1899, M.A. Barber s.n. 3 KANU catalog # 144923: CO, Baca Co: 20 mi S, 3 mi W Pritchett, 3 Aug 1970, S. Stephens 43569 & R. Brooks.

1 Likely is defined as more likely to occur than not occur on the National Forest or Grassland. This generally can be thought of as having a 50% chance or greater of appearing on NFS lands.

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 2 of 3 ATTACHMENT SS2 REFERENCES

Anderson, J.M. 1950. Annotated List of the Vascular Flora of Baca County, Colorado. M.A. Thesis, University of Colorado. 39 pp. Barkley, T.M. 1991. Asteraceae, pp. 838–1021 in Great Plains Flora Association, Flora of the Great Plains. University Press of Kansas. Lawrence, Kansas. vii + 1402 pp. Clark, D.A. 1996. A floristic survey of the Mesa de Maya Region, Las Animas county, Colorado. Nat. Hist. Invent. Colorado 17: 1–44. Freeman, C.C. (in prep.) Checklist of the Vascular Plants of the Grassland Biome of Central North America. Great Plains Flora Association. 1977. Atlas of the Flora of the Great Plains. Iowa State University Press. Ames, Iowa. xii + 600 pp. Hartman, R.L. 1997. Atlas of the Vascular Plants of Wyoming. Published by the author at Rocky Mountain Herbarium, University of Wyoming. Laramie, Wyoming. [unpaginated] Keil, D.J. 1977. A revision of Pectis section Pectothrix (Compositae: Tageteae). Rhodora 79: 32–78. Ostlie, W.R., R.E. Schneider, J.M. Aldrich, T.M. Faust, R.L.B. McKim and S.J. Chaplin. 1997. The Status of Biodiversity in the Great Plains. The Nature Conservancy. Arlington, Virginia. xii + 326 pp. Shaw, R.B., S.L. Anderson, K.A. Schulz and V.E. Diersin. 1989. Floral inventory for the USA army pinon canyon maneuver site, Colorado (USA). Phytologia 67: 1–42. Weber, W.A. and R.C. Wittman. 2001a. Colorado Flora: Eastern Slope (3rd Edition). University Press of Colorado. Boulder, Colorado. xl + 521 pp. Weber, W.A. and R.C. Wittman. 2001b. Colorado Flora: Western Slope (3rd Edition). University Press of Colorado. Boulder, Colorado. xxxvii + 488 pp.

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