136 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Lily. 



CEnothera albicaulis, Nutt. Tall White Primrose. 



QEnothera caespitosa, Nutt. Evening Primrose ; Mountain Prim- 

 rose ; Rock Rose. 



CEnothera muricata, L. (O. strigosa, Rydb.). Yellow Primrose. 



CEnothera pinnatifida, Nutt. Evening Primrose. 



Crthocarpus tenuifolius, Benth. Fairy Pinks. 



Opuntia polyacantha platycarpa, Coult. Prickly Pear; Cactus. 



Oryzopsis. See Eriocoma. 



Oxytropis Blankinshipii, (Nelson). Red Loco; Shoe-strings. 



Oxytropis Lambertii, Pursh. Loco-weed; White Loco; Buffalo 

 Pea. 



*Panicum capillare, L. Tumble-grass ; Tickle-grass. 



Pedicularis Groenlandica, Retz. Elephant's Head. 



Pentstemon acuminatus, Dougl. Baby Blue-eyes ; Mayflower. 



Petasites sagittata, Gray. Coltsfoot. 



Peucedanum. See Lomatium. 



Phacelia leucophylla, Torr. Scorpion Weed. 



Phacelia Menziesii, Torr. Wild Heliotrope. 



Philadelphus Lewisii, Pursh. Wild Syringa. 



Phleum alpinum, L. Mountain Timothy. 



Phlox Hoodii, Rich. Moss Pink ; Moss Phlox. 



Phlox longifolia, Nutt. Sweet William. 



Phragmites communis, Trin. Cane Grass; Reed Grass. 



Physaria didymocarpa, Gray. Bladder Pod. 



Picea alba, Link. White Spruce. 



Picea Engelmanni, Engelm. Engelmann's Spruce. 



Pinus albicaulis, Engelm. Nut Pine ; Pitch Pine ; Alpine Pine. 



Pinus flexilis, James. White Pine ; Nut Pine. 



Pinus monticola, Dougl. White Pine ; Little Sugar Pine. 



Pinus Murrayana, Murr. Lodgepole Pine. 



Pinus ponderosa, Dougl. Yellow Pine; Missoula Pine. 



Pinus scopulorum, Lemmon. Bull Pine; Black Pine; Scrub Pine. 



Plantago Asiatica, L. and *P. major, L. Plantain. 



Plantago Patagonica gnaphalioides, Gray. Ribgrass. 



Polemonium caeruleum, Gray. Jacob's Ladder; Skunkweed. 



*Polygonum Convolvulus, L. Wild Buckwheat; Bindweed. 



Populus angustifolia, James. Narrow-leaved Cottonwood. 



Populus balsamifera, L. Balm of Gilead; Balm. 



Populus deltoides, Marsh. Wide-leaved or River Cottonwood. 



Populus tremuloides, Michx. Quaking Asp; Aspen Poplar. 



