Phacelia filiae N. I). Atwood, F. J. Smith & T. A. Knight is an undescribed species from Clark, Nye, and Lincoln Counties, Nevada. It is closely related to Phacelia parishii of California, Arizona, and Nevada and Phacelia beatleyae of southern Nevada. Phacelia petrosa N. D. Atwood. F. J. Smith & T. A. Knight from Arizona, Nevada, and Utah is also described as new. It is most closely related to Phacelia crenulata, which is known from Arizona, California, Nevada, and Utah. The most prominent differences among these species are the sha f)e of the seeds and appearance of the seed coats.
Benson (1935) published an important paper on the fauna and flora collected during an expedition led by Alexander, Kellogg, and Benson in the Navajo Mountain region in 1933. They had six stations as follows: one five miles .south of the mountain, 10-12 June; one at War God Spring on top of the mountain at 8400 feet, 13-20 June; one at Bridge Canyon, 21-24 June, two on the mesa south of the mountain; and the other near Navajo Mountain Trading Post, 25-26 June. In addition, naturalists assigned to Bryce Canvon National Park have, since 1932, made contributions toward our knowledge of the fauna and flora of the region. Woodbury and Russell (1945), in their comprehensive report on the birds of the Navajo countrv, presented data on specimens collected and observations made in Glen Canvon, on Navajo Mountain, and on Kaiparowits Plateau. Behle and three associates made a boat trip down the Colorado River 13-17 April 1947. They made observations at various places between Hite and Lee's Ferry, December 1980 Atwood et al.: Kaiparowits Vertebrates 305 Great Basin Naturalist Vol. 40, No. 4Tablf. 1. Vegetation types and locations of perniaiient sites for Biighaiii Young University Navajo-Kaiparowits study.
SiteNo.Vegetation typeOryzopsis-Stipa-Ephedra Great
Described is Sphaeralcea gierischii N. D. Atwood & S. L. Welsh, sp. nov., which is distin¬ guished from S. rusbyi by the glabrous or glabrescent herbage, with few or no stellate hairs confined to the leaf margin, larger (15-25 mm long) flowers, and restricted range and habitat, and from S. moorei in the 3-to 5-parted, narrow leaf lobes, bright green leaves sometimes suffused with red-purple, and different habitat. Two varieties are evaluated at the species level within Sphaeralcea based on dif¬ ferent morphological features, geographical distri¬ bution, and habitat: S. moorei (S. L. Welsh) N. I).
Watson based on sim¬ ilarities in stature and anthocarp structure and to A. fragrans Nuttall in the caulescent stems. A key to closely related taxa is included.
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