Koford CynomyS ludovicianus August 15,1955 NE Larimer Co, Colo. no dogs E. of work, fruit fresh digging there; three old burrows, seeped, not new. Farthest E. burrow a flattish sautin' cut area with Bgn, Asm, Dys. pop. cover, about 50% (step-loop). Mostly on a bordering grossy flat area (grown 1-2"; asm 6-8"). // At E. central part colony, W. of work, about 3/4 triangle of 5-10% slope little. two swales. Easy to count dogs burr, 5 asw. / In general, 1-3 dogs per acre in diff. parts colony. At E. central side, many shallow diggings among open Salsola, Curutia stand in loose soil. 4-7 holes/ sq. yd., to 4" deep for 50yds. fairly continuously, 4 at other spots. Many fresh. Many with stub of large starchy root 3/8" diam. at bottom (collated, some as spring). Could not find plant having similar root. Possibly same dig for sisset leaves. Much dig for allium at E central part col- ony, when concentration greatest - fairly flat, green swale with Salsola, Asm, & Atriplex, Dys. pop., Salvia, Solanum (purple). At both areas many Asm. burrow current (the many old culms dry in ground, cut earlier). // When Atriplex, shoots 12" long cut, long ago & currently. Few shoots left, lodged bushes about 10" tall. Salsola (Shea) cut much less in some areas, & Curutia cut practically not at all (8"); lint cut in See. 10 in areas when atriplex scarce). // In E. part colony a slope, away from swales, only 4 hits per 100 loops (Asm, Shea, Atriplex, Bahia), but C.L. freed mound workings. Shea cut in swale sides tall (1½") & thick. // Probably this swale seg. sustains C.L. much when area of burrow is denuded. Swales every 100+ yds. in this colony. // Butro regalis flying over colony 10:15 a.m. // On E. slope where Curutia dominant, few C.L. Clay loam soil, erosion present. Cur. lan. 8" tall. Some Opuntia & scottish single Asm. Cur. lan. 1'