The American Midland Naturalist 
PUBLISHED BI-MONTHLY BY THE UNIVERSITY 
OF NOTRE DAME, NOTRE DAME, INDIANA. 
VOL. II. JANUARY, 1912. NO. 7.* 
NEW PLANTS FROM NORTH DAKOTA.—VII. 
By J. LUNELL. 
Rosa subnuda sp. nov. 
Caudices 3-8 dm. alti, circiter 1 cm. diametro, lucide et 
surde cinerei, inermes vel spinis numerosis, inequalibus, prorsus 
tenuibus, ferme rectis partim vestiti; rami splendide obscure 
fusci, inermes vel spinis tenuibus forsan armati, valde foliosi. 
Stipulae integrae, conspicue non dilatatae neque spinulosae, 
nonnumquam glanduloso-marginatae, subtus molliter pubescentes, 
superne glabratae. Rachis folii minute villosa vel tomentulosa, 
neque glanduloso-pilosa, saepe spinulosa. Foliola 5-9, ovalia vel 
obovata, obtusa, basi cuneata, modice serrata, 1.5-3 cm. longa, 
petiolulata, subtus molliter pubescentia, superne glabrata. Flores 
pallide rubicundi, 3-5 cm. lati, corymbosi. Receptaculum glabrum. 
Sepala interiora integra, exteriora lobata, lanceolata, singulis vel 
binis apicibus longis, linearibus, glabratis ornata, interne eoque 
magis marginaliter albido-lanata, tergo partis inferioris glanduloso- 
hispido. Fructus globularis, 1-1.5 cm. diametro. Partes plantae 
variae omnes valde confertae. 
Stems 3-8 dm. high, about 1 cm. in diameter, light and dull 
ashy gray, unarmed or partly covered with numerous, unequal, 
rather weak, nearly straight prickles; the branches brightly dark 
‘mahogany colored, unarmed or with occasional weak prickles, 
very leafy. Stipules entire, not comspicuously dilated, not prickly, 
occasionally glandular-margined, soft-pubescent beneath, glabrate 
above. Leaf-rachis finely villous or tomentulose, without glandular 
hairs, often prickly. Leaflets 5-9, oval or obovate, obtuse, with 
cuneate base, not deeply serrate, 1.5-3 cm. long, petiolulate, 
* January 15, 1912.—Pages 153 to 168. 
