Plant material eaten by _P. maniculatus_ and refused by _P. truei_ included only the leaves and stem of _Viguiera multiflora_. Plant material eaten by _P. truei_ and refused by _P. maniculatus_ included the leaves of _Calochortus gunnisonii_ and the leaves and stem of _Erigeron speciosus_. TABLE 5--Plants, or Parts of Plants, Eaten by Captive Individuals of _P. truei_ in Mesa Verde National Park, Colorado. 0 = not eaten, + = eaten, - = not offered. =============================+========+======+========+======= Species of Plant | Leaves | Stem | Flower | Seeds -----------------------------+--------+------+--------+------- _Amelanchier utahensis_ | - | - | - | + _Calochortus gunnisonii_ | + | + | - | + _Chaenactis douglasii_ | 0 | 0 | - | - _Chrysothamnus depressus_ | 0 | 0 | 0 | - _Chrysothamnus nauseosus_ | + | 0 | 0 | - _Comandra umbellata_ | + | + | - | - _Erigeron speciosus_ | + | + | - | - _Eriogonum alatum_ | - | - | - | + _Juniperus osteosperma_ | - | - | - | + _Lupinus caudatus_ | 0 | 0 | + | - _Lithospermum ruderale_ | 0 | 0 | - | 0 _Mellilotus alba_ | + | + | + | + _Mellilotus officinalis_ | + | + | + | - _Orthocarpus purpureo-albus_ | + | + | + | + _Pedicularis centranthera_ | + | + | - | - _Penstemon linarioides_ | + | + | - | + _Pinus edulis_ | - | - | - | + _Polygonum sawatchense_ | + | + | - | 0 _Solidago petradoria_ | 0 | 0 | 0 | - _Viguiera multiflora_ | 0 | 0 | 0 | 0 -----------------------------+--------+------+--------+------- Plant material eaten by captives of both species included _Calochortus gunnisonii_--stem and seeds; _Comandra umbellata_--leaves and stem; _Eriogonum alatum_--seeds; _Penstemon linarioides_--leaves and stem; _Pinus edulis_--seeds; and _Juniperus osteosperma_--seeds. Plant materials refused by both species of mice included the leaves and stem of _Chaenactis douglasii_, the leaves, stem and seeds of _Lithospermum ruderale_, and the leaves, stem and flowers of _Solidago petradoria_. Cricetine rodents chew plant and animal foods thoroughly; contents of their stomachs appear as finely-particulate fragments. These fragments invariably contain pieces of epidermis from ingested plants. Due to the presence of cutin in the cell walls, epidermis is last to be digested.