140 AMERICAN MIDLAND NATURALIST 



et dentibus apice glandulosis, superne glabrae, siibtus pubescentes. 

 Rachis folii villosa, saepe glandulis et interdum spinis conspersa. 

 Foliola 5-plerumque 7, in surculis recentioribus non raro 9, obovata 

 usque ovalia, obtusa, basi magis minusve cuneata, serrata, serra- 

 turis procurvis, ampla, 2.5-4 cm. longa, petiolulata, superne glabra, 

 subtus et praecipue marginibus et nervis tomentulosa. Flores 

 nitidi, rubicundi, circiter 5 cm. lati, corymbosi vel solitarii. Sepala 

 lanceolata, Integra vel lobata, interne et marginaliter albido- 

 lanata, tergo tomentuloso. Receptaculum rubrum, globulare, 

 1.5 cm. diametro. 



Stem and woody branches dark-brown, shining, sparingly 

 dotted, as well as the herbaceous branches, with weak, straight 

 prickles, erect or inclined, compressed from the base, the infra- 

 stipular ones more persistent that the others, or almost or altogether 

 naked. Stipules large, with denticulate margins and glandular- 

 tipped teeth, glabrous above, pubescent beneath. Leaf-rachis 

 villous, often with glandular admixture and an occasional prickle. 

 Leaflets 5 — usually 7, on young shoots not seldom 9, obovate to 

 oval, obtuse, with more or less cuneate base, serrate, with the 

 serratures directed forwards, large, 2.5-4 cm. long, petiolulate, 

 glabrous above, tomentulose beneath, especially on margins and 

 nerves. Flowers bright pink, about 5 cm. wide, corymbose or 

 solitary. Sepals lanceolate, entire or lobed, white-woolly within 

 and on the margins, tomentulose on the back. Receptacle 

 red, globular, 1.5 cm. in diameter. 



This species has an ample, not at all crowded foliage, which 

 makes it distinguishable at first glance from its ally, R. submida, 

 and was collected by the writer on the banks of Mouse River at 

 Minot, Ward County, on July i, 1909 (type), and on the banks of 

 James River at Jamestown, Stutsman County, on August 25, 



1913- 



Writings of earlier dates, if any of them should be found 

 irreconcilable with data given in this paper, are herewith repealed, 

 as far as the differences go. The author hopes that the contribu- 

 tions here made will do their share in aiding to a better under- 

 standing of this extremely difficult and altogether too long time 

 neglected genus. And he further hopes and wishes that they will 

 exercise a stimulating influence in favor of a continued study of 

 the multiform roses of his state. 



Leeds, North Dakota. 



