Life History of the Kangaroo Rat by Charles Taylor Vorhies;Walter P. (Walter Penn) Taylor
page 53 of 75 (70%)
page 53 of 75 (70%)
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Lupinus sparsiflorus (lupine) Tr.
Martynia altheaefolia (small devil's-horns) 12 Mollugo verticillata (carpetweed) 324 Oenothera primiverus (evening primrose) 15 Opuntia discata (prickly pear) 15 Loeflingia pusilla Tr. Lepidium lasiocarpum (peppergrass) Tr. Plantago ignota (plantain) 818 Polygala puberula (milkwort) Tr. Portulaca suffrutescens (purslane) Tr. Prosopis velutina (mesquite) 1,570 Sida diffusa (spreading sida) 30 Solanum elaeagnifolium (742 fruits) (trompillo, prickly solanum) 156 Puffballs and fleshy fungi (undetermined) 12 Total species, exclusive of fungi, 41. It will be seen from Table 3 that while a large number of species of plants are represented in the totals from so many dens, a majority of them are of very minor importance, and that the seeds of grasses are the principal storage and probably therefore the principal food material. Six of the most important species of grasses (disregarding species furnishing less than 5 grams) comprise 85.6 per cent of the total weight of storage from 22 dens. Crowfoot grama (_Bouteloua rothrockii_) stands first in quantity in the total, forming 39.4 per cent of all stored material, 46 per cent of the six important grasses, and 45 per cent of all grasses. The largest amount of storage of any one species of grass in any one den on the Range Reserve also is of this species, 2,205 grams[5] (Table 1, den 1, p. 20, and Pl. VII, Fig. 2). This is exceeded by a dropseed grass, _Sporobolus cryptandrus strictus_, which amounted |
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