. Brigham Young University science bulletin. Biology -- Periodicals. BIOLOGICAL SERIES. VOL. \ ^. NO. 1 NOTES ON EKIOGONUM - VI. nistnbulion. Rocky slopes and Hats in thin shallow soils often on rocky outcrops or on sandstone ledges, from the Inyo Mountains, Inyo County, California, eastward into Esmeralda County, Nevada, on Magruder Moun- tain, and in the low mountains of central Nye and western Lincoln counties, Nevada, and (perhaps) westward into extreme western Utah, from (• feet elevation. Flowering from July to September. Figures 16 and 17. The name lapidicola is derived from
. Brigham Young University science bulletin. Biology -- Periodicals. BIOLOGICAL SERIES. VOL. \ ^. NO. 1 NOTES ON EKIOGONUM - VI. nistnbulion. Rocky slopes and Hats in thin shallow soils often on rocky outcrops or on sandstone ledges, from the Inyo Mountains, Inyo County, California, eastward into Esmeralda County, Nevada, on Magruder Moun- tain, and in the low mountains of central Nye and western Lincoln counties, Nevada, and (perhaps) westward into extreme western Utah, from (• feet elevation. Flowering from July to September. Figures 16 and 17. The name lapidicola is derived from the Latin lapis, rock, and -cola, dweller, as to the rocky habitat where this variety occurs on the Nevada Test Site, the type location. The typical phase of var. lapidicola is a densely branched form, low and spreading, and generally red- dish-brown in color. Of the various varieties investi- gated so far. this is the only polygamo-dioecious one noted althougli I have reasons to suspect this condi- tion may occur sporadically elsewhere in the species. On the Nevada Test Site, where the variety has been extensively studied, the plants are confined to thin soils usually on top of tlat volcanic rocks which make up the mesas. The rooting system is superficial, being less than a centimeter or two below the surface, but covering a wide area. This is similar to the rooting system of Astragalus beatleyae Barneby, a recently described local endemic which also grows in the same 1 ig. 14. Distribution map of Enogoiiuiu microthecuin var. johimonii. San Bernadino and Los Angeles counties, Cali- fornia. 1926. Holotype, UTC! Isotypes, 35 duplicated will be distributed to various herbaria from the Intermoun- tain Flerbarium. L'tah State University, Logan. - A var. paiuimiiitensi statura niinore differt et similis a var. jolmstonii sed foliis 3-7 mm longis et 1-4 mm latis. floribus () 2-3 mm longis. Low dwarfed polygamo-dioecious (at least in some) sub- shrubs dm high and
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