ATTACHMENT SS2

REGION 2 SENSITIVE EVALUATION FORM

Species: pedatum L. / Northern maidenhair / ADPE

Criteria Rank Rationale Literature Citations Adiantum pedatum is reportedly found in South Dakota and Nebraska. In South • NatureServe, 2001 1 D Dakota it is listed only from Lawrence County, and is possibly extirpated. Its range in Distribution • , NRCS, 2001 within R2 Nebraska is outside of Region 2 administered lands. A search by Dave Ode of the • Great Plains Flora, 1986 SD GF&P Department, and another individual, failed to relocate the at its single • Ode, Pers. Comm., 11/01 reported location in SD. Listed as SH in SD. • SD NHD, 2001 Confidence in Rank High Widely distributed in the eastern half of North America and in Washington and Arizona. • NatureServe, 2001 2 C Distribution • PLANTS, NRCS, 2001 outside R2 Confidence in Rank High The spores of Adiantum pedatum, like the spores of other and allies, can be • FNA, Vol. 1, 1993 3 A transported over long distances. Spores can only germinate in appropriate Dispersal • FNA, Vol. 2, 1993 Capability environments. The nearest location of known populations to Region 2 administered lands is in eastern Nebraska. Dispersal into the Region from other populations seems unlikely, as all known populations are located considerably east or south of Region 2. Confidence in Rank Medium Rare or extinct. No information is currently available to suggest the species still exists • Van Bruggen 1996 4 D in Region 2, and efforts to relocate the plant at the original location have been Abundance in • PLANTS, NRCS, 2001 R2 unsuccessful. Confidence in Rank Medium Unknown – species possibly extirpated. • PLANTS, NRCS, 2001 5 D Population Trend in R2 Confidence in Rank Medium

The habitat trend is unknown. Descriptions indicate that it prefers rich woodlands • Parrish et al, 1996 6 D within its normal range. White spruce is believed to have increased in the Black Hills, Habitat Trend in R2 with a corresponding reduction in areas dominated by deciduous trees. What effect this may have had on the occurrence of Adiantum pedatum is unknown. Confidence in Rank Medium

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 1 of 5 ATTACHMENT SS2

Species: Adiantum pedatum L. / Northern maidenhair / ADPE

Criteria Rank Rationale Literature Citations Due to the lack of information about the habitat preferences of Adiantum pedatum in • Parrish et al, 1996 7 D the Black Hills, this ranking is D. Given the decrease in hardwood habitat due to fire Habitat Vulnerability suppression, the habitat of this species may be declining at this time, or has declined or in the past. Modification Confidence in Rank Medium Adiantum pedatum, like most species of fern, reproduces clonally as well as by • FNA, Vol. 1, 1993 8 D spores, and may tolerate some small-scale disturbance. Life History and Confidence in Rank Medium Demographics

Evaluator(s): Reed Wight Crook – Botanist, Black Hills National Forest Date: 26 Nov. 2001, Darcie J. Bacon – Botanist, Black Hills National Forest Updated July 26, 2002

Notes:

Since the occurrence of this species in Region 2 is currently uncertain, it may be best to put it on a watch list. If the species is relocated, then it must be re-evaluated and put back on the list.. It appears at the current time that Adiantum pedatum has been extirpated in the Black Hills National Forest as recent attempts by Ode and others have failed to relocate the single reported population.

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

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

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Species Name: Adiantum pedatum L. / Northern maidenhair / ADPE – No known occurrences outside the historical record for Formatted the Black Hills Colorado NF/NG Kansas NF/NG Nebraska NF/NG South Dakota Wyoming NF/NG

NF/NG

y y

y y y Likel Known Known Likel Known Known Likel Known Likel Known Likel Arapaho-Roosevelt NF Cimarron NG Samuel R.McKelvie NF Black Hills NF X Shoshone NF White River NF Halsey NF Buffalo Gap NG Bighorn NF Routt NF Nebraska NF Ft. Pierre NG Black Hills NF Grand Mesa, Ogalala NG Medicine Bow NF Uncompahgre, Gunnison NF San Juan NF Thunder Basin NG Rio Grande NF Pike-San Isabel NF Comanche NG Pawnee NG

References Flora of North America North of Mexico. 1993. Volume 1, Introduction. Edited by Flora of North America Editorial Committee. Oxford University Press, New York, NY.

Flora of North America North of Mexico. 1993. Volume 2, Pteridophytes and Gymnosperms. Edited by Flora of North America Editorial Committee. Oxford University Press, New York, NY.

Great Plains Flora Association 1986. Flora of the Great Plains. University Press of Kansas. Lawrence, Kansas.

Nature Serve Explorer: An online encyclopedia of life [web application]. 2001. Version 1.6. Arlington, Virginia, USA: NatureServe. Available: http://www.natureserve.org/explorer. Accessed between (November 20, 2001 and December 10, 2001).

Parrish, J.B., Herman, D.J., Reyher, D.J. 1996. A Century of Change in the Black Hills Forest and Riparian Ecosystems. South Dakota Agricultural Experiment Station/U.S. Forest Service. Brookings, SD.

Rare, Threatened, And Endangered Plants. Species Tracked By The South Dakota Natural Heritage Program, South Dakota Department of Game, Fish And Parks. 1998. (http://www.state.sd.us/gfp/Diversity/RarePlant.htm).

USDA, NRCS. 2001. The PLANTS Database, Version 3.1 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

appearing on NFS lands.

USDA-Forest Service R2 Sensitive Species Evaluation Form Page 3 of 5 ATTACHMENT SS2 Van Bruggen, T. 1996. The Vascular Plants of South Dakota. USD Book & Supply, Vermillion, SD.

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USDA-Forest Service R2 Sensitive Species Evaluation Form

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