FLORA OP THE YELLOWSTONE NATIONAL PARK. 31 



MALVACEAE. 



Malvastrum coccineum, Gray. 



Mammoth Hot Springs. Rare within the Park. 



Sphaeralcea rivularis, Torr. 

 Gibbon Canon ; Mammoth Hot Springs in open pine woods. Rare. 



LINAGES. 



Linum perenne, L. 



Very common at low elevations. Petals sometimes wh.te. 



GERANIACE^. 



Geranium Carolinianum, L. 



Hot Sulphur Springs (Adams). 



Geranium incisum, Nutt. 



Very common on the border of woods up to 9000 ft. alt. 



Geranium Richardsoni, Fisch. & Mey. 



With the former, but less common. Petals apparently always white. 



Floerkea proserpinacoides, Willd. 



Around springs near Swan Lake. Rare. 



RHAMNACE^. 



Rhamnus alnifolia, L'llev. 



Along upper East Fork of the Yellowstone, 7000 ft. alt. Rare. 



Ceanothus velutinus, Dougl. 



Rocky hills, Soda Butte, 8000 ft. alt. Rare. 



SAPINDACE-ffil. 



Acer glabrum, Torr. 



"Wooded hills, Mammoth Hot Springs, 6500 ft. alt. Rare. 



LEGUMINOS^. 



Lupinus caespitosus, Nutt. 



Meadows and subalpine grassy slopes. Blacktail Deer Creek, 7200 

 ft. alt. ; Mt. Washbunie, 9600 ft. alt. ; Mud Springs and Yellowstone 

 Lake (Adams) ; Upper Falls of the Yellowstone (Parry). Rather 

 Common. 



