. Brigham Young University science bulletin. Biology -- Periodicals. ^m. Fig. 17. Illuslration o( Eriogontini nucrorht'cuni vur. lapidicola. Unfoitunately 1 liave not been able to study these plants in the tleld, and it is possible that they might represent another distinct taxon. The tonientum is whitish, and thus different from var. lapidicola in this respect, but whether or not this is a consistent feature of the central Nevada plants cannot be determined on the basis of a small number of collections. The second phase is represented by Pitrpiis ^24^. This too is a depauperate variant oi Eri
. Brigham Young University science bulletin. Biology -- Periodicals. ^m. Fig. 17. Illuslration o( Eriogontini nucrorht'cuni vur. lapidicola. Unfoitunately 1 liave not been able to study these plants in the tleld, and it is possible that they might represent another distinct taxon. The tonientum is whitish, and thus different from var. lapidicola in this respect, but whether or not this is a consistent feature of the central Nevada plants cannot be determined on the basis of a small number of collections. The second phase is represented by Pitrpiis ^24^. This too is a depauperate variant oi Eriogomiui fiiicrolhevum and is questionably referred to var. lapidicola. In this very distinct phase the leaves are glabrous above, tiglitly revolute with thin, nearly glabrous, tlowering stems and short, compact inflorescences. At first glance this population reminds one of E. ehcifolium of northern Arizona, but that species is far to the south, and the flowers are different. One major problem with the Purpus collection is the location-it is given as Jimiper Mountain, a place unknown to me. However, I sus- pect the site may be a part of the House Range in Beaver Utah, but until this area can be visited and the population rediscovered, the fate of the pop- ulation as a valid entity within var. lapidicola must await its time. 6g. Eriogonum microthecuni var. alpinum Reveal Eriogontini microthecuni Nutt. var. alpinum Reveal. var. nov. — Loose dry soil. Sonora Pass, Tuolumne and Mono counties, California, at 9,300 feet eleva- tion, 16 July 1863, Brewer 1888. Holotype, US! Iso- types, GH, MO, UC! - A var. laxiflora statura minore, dm alta, foliis anguste ellipticis, 3-7 C?) mm longis et (3) mm latis, involucris () mm longis, floribus mm longis differt; a var. lapidicola et var. jolmstouii foliis anguste ellipticis et floribus mm longis differt. Low decumbent spreading subshrubs dm high and dm across; leaves linear-oblanceolate
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