Koford 287 Cynomyx ludovicianus September 28,1955 Nr. Ludlow,NW S.Dakota. Soil silt loam. Ypslope Bgs. become dominant. White & normal C.L. seem to go into same burn areas several times. Town said to have been here since about 1936 (but albinos since?). Black fat roots raw apparent foods. Land of colony owned by James Clark- son, Buffalo, S.D. He had requested dogs be poisoned. Jacobi would like to keep in cheekily shooting. September 29,1955 (=1) Devil's Tower, NE. Woming. Densensus area 2¼ A. near road, counted 53 C.L. This area mainly very short buffalos grass, now yellow-brown, but parts have more or less Aristida, & mills below culverts have thick 'tall' Bromus near them for several yards. C.L. truelt than this Bromus for 20' at several sites. Some areas Aristida just S. of road are 100' across, but patches Bda interrupted and a few % of Dcm persists in Bromus & among weeds. (Some Dcm still green. Veg. much greener than Ludlow or TRNMP). SEY3 off better part colony S. of road is mostly Aristida 1' tall & pale yellow-white. Old mounds 1½ ft. tall allow dogs to see our grass. Population 5 to 10 per acre even in thickest area Aristida, where it covers (local area) 50% of the ground (wetland n.d.s., of course, & some Bda weeds among Aristida). Population in thick Aristida apparently lower than in Bda zone, where slope starts to steepen, just S. of road. Cypryp grumps on n.d.s. 58 yds. out in gentle slope that is a area of 8"-16" tall Aristida. Green fobs on tower: Sphaerolin, Vbr, some Polyg. avia, Melilotin (yellow), Aster eric., Solidago, some Drilop. pum., Artemisia. Dry are Plantago purshii, Lepidium, Balogunum avicularis, Baclop. pumila (many seeds with cotton tufts scattered). Polyg. avia common around in Aristida zone (See this Aristida indicate breakdown of