Additional Notes on Selaginella Utahensis

Abstract

Selaginella utahensis Flowers was described on the basis of two small specimens collected in southwestern Utah by Dr. W. P. Cottam.1 Through an unfortunate error in copying the wrong line of data from the field catalog on the specimen label, the type locality became misstated by about thirty-two miles and the mistake was not discovered until after the description was published. A correction appeared in a later issue of the journal.2 The type locality is on Lady Mountain, in Zion National Park, a high precipitous sandstone cliff arising about three thousand feet above the canyon floor, the latter being at an elevation of about four thousand feet at this point. In June 1951 I made a special trip to Zion Park for further study and collecting. The National Park Service has blazed a trail up the face of this mountain for the benefit of the more zealous hikers. It is extremely steep and tortuous, often crossing slopes where mere footrests have been cut in the smooth sandstone or leading up improvised stairs and along narrow ledges with a handrail or chain to steady the footing as one crosses. There are several ladders leading from one narrow ledge to