Distribution of vertebrates of the Bighorn Canyon National Recreation Area

During a survey of the vertebrates in the Bighorn Canyon National Recreation Area, 46 mammal, 210 bird, 9 reptile, 5 amphibian, and 28 fish species were found. Habitat structure and moisture were two environmental variables associated with species numbers across this 1,820-ha area. Eight distinct habitats were evaluated. In coniferous forests, 27% of the birds and 54% of the mammals were observed. Sagebrush/grasslands and upland shrublands were very arid and had relatively few vertebrates. Five introduced game birds occurred in sagebrush habitat. Riparian and wetland habitats had the largest number of unique vertebrates, 38 and 77 respectively. The establishment of Bighorn Lake in 1968 influenced the fisheries in streams and rivers as 10 introduced fish species are now there.     

Kaiparowits flora

The paper presents an annotated list of 851 taxa in 358 genera and 80 families.   Threatened and endangered plants are enumerated.     

Three new species of Nearctic Isoperla (Plecoptera)

Nymphs and adults of three new species of Isoperla are described from reared material. I. sagittata is known only from southeastern Texas, I. Coushatta has been collected in East Texas and Oklahoma, and I. jewetti occurs in the Basin and Range Mountains of West Texas. The male aedeagii, female subgenital plates, and nymphal mouthparts are diagnostic in all three species.     

Plants of Arizona: a new species of Astragalus from the Kaibab Plateau

Astragalus atwoodii Welsh and Thorne is named and described on the basis of materials collected on the Kaibab Plateau in Coconino County, Arizona.     

New variety of Astragalus conjuctus S. Watson from Benton County, Washington

Discussed are relationships of the species within Astragalus section Conjuncti; A. conjunctus var. rickardii Welsh, Beck, & Caplow var. nov. is proposed.