io8— ROSA MACDOUGALII 
Rosa Macdougalii : caule bruneo, ramosissimo ; aculeis pluribus, rectis, patulis, 
inaequalibus, nullis geminis ; foliolis 5-7, parvis, oblongis, obtusis, simpliciter 
serratis, utrinque glabris ; rhachi glabra, parce aciculata ; stipulis apicibus parvis, 
patulis, ovatis, liberis, praeditis ; floribus solitariis ; pedunculis brevibus, aciculatis ; 
calycis tubo globoso, dense aciculato ; lobis lanceolatis, acuminatis, integris, 
dorso glabris ; petalis rubellis, magnitudine mediocribus ; stylis dense pilosis ; 
fructu globoso, aciculato, sepalis persistentibus coronato. 
R. Macdougalii Holzinger in Coult. Bot. Gaz, vol. xxi. p. 36 (1896). 
Stems brown, much branched ; prickles numerous, unequal, straight, spreading, 
none in pairs. Leaflets 5-7, small, oblong, obtuse, % in. long, simply toothed, 
glabrous on both surfaces ; petioles glabrous, slightly aciculate ; stipules with small, 
ovate, spreading, free tips. Flowers solitary ; peduncles short, aciculate. Calyx- 
tube globose, densely aciculate ; lobes lanceolate, acuminate, entire, | in. long, 
glabrous on the back. Petals pink, middle-sized. Styles very hairy. Fruit 
globose, hispid, crowned with the persistent sepals. 
Rosa Macdougalii is a native of the United States. It is found 
in the mountains of Montana and Idaho at a height of about 3,000 feet. 
In habit it closely resembles the European Rosa spinosissima L. 
321 
