July 15, 1863: Sonora Pass Road
Camp 125 [Today] we came on fifteen to twenty miles, over a rough, desolate country, of volcanic hills, with some pretty, grassy valleys in places, on the forks of Walker’s River. We camped by a little lake, at the altitude of over seven thousand feet. During the day we passed a very large and copious hot spring; the water is boiling, and a stream large enough for a small mill runs away.
Specimens collected: Sidalcea oregana subsp. spicata; Tetradymia canescens; Carex microptera; Carex simulata; Castilleja pilosa; Castilleja linariifolia; Eriogonum umbellatum var. nevadense; Carex utriculata; Agastache urticifolia; Dieteria canescens var. canescens; Apocynum androsaemifolium.