IG, THE JOURNAL OF EOTANT 



SOME ROSES FROM DORSETSHIRE. 



By G. a. BouLENQEii, LL.D., D.Sc, F.R.S. 



Whilst spending a fortnight at Studland last summer, I paid 

 special attention to the Roses, represented by a great -variety of forms, 

 some of which could not be brought under any of the definitions in 

 the useful compilation prepared by Major Wolley-Dod for this 

 Journal, summarizing all that is known on the distinction of the 

 British species and varieties and their nomenclature. The following 

 notes show how much can be added to our knowledge of this most 

 intricate subject even in localities one would expect to have been well 

 explored. 



Rosa ptychophylla, sp. n. 



A low, erect, lax bush, 4 feet high, rather scantily foliated, the 

 folioles small (24 to 36 mm. by 12 to 20) and folded, so as to appear 

 extremely narrow, and edged with red, which colour makes the stipules 

 and the prickles very conspicuous ; in full bloom in the first half of 

 Jul}^ the flowers (1| inches in diameter) numerous, projecting beyond 

 the terminal leaves of the branches bearing them, solitar}^ gem.inate, 

 or in clusters of three or four, pure white when fully open, feebly 

 scented, the petals in the buds tinged with yellowish pink. Year's 

 shoots stiff, erect, green with bright red prickles. 



Disc very convex, styles smooth and more or less projecting, often 

 agglutinated in a very distinct column, with the stigmas forming a 

 conical head. Sepals shorter than the petals, narrowl}^ bipinnate, 

 pubescent, Avoolly on the edges, with scattered small red glands ; 

 calyx-tube glabrous, twice as long as l)road ; pedicels smooth or with 

 scattered stipitate glands, 1| to 2| times as long as the cah^x-tube. 

 Bracts large, foliate, very hairy, sometimes reaching the extremity of 

 the corolla. 



Folioles 7, small, If to 2| times as long as broad, ovate to ovate- 

 lanceolate, rounded at the base, acute at the end, sessile or nearly so, 

 uniserrate without glands, the teeth sharp and numerous (15 to 30 on 

 each side), glabrous, dark green and shiny above, pale green and hairy 

 all over beneath, the hairs very long on the mid-rib ; petioles with 

 prickles and scattered stipitate glands, glabrous or feebly hair}-- ; 

 stipules rather broad, glabrous. 



Prickles on the flowering branches large or moderate, more or less 

 curved, longer than their basal diameter ; on the year's shoots large 

 and feebly curved, sometimes very crowded and unequal in size, some 

 perfectly straight with broad base, others reduced to acicles ; on old 

 stem numerous, straight or feebly curved, longer (up to twice) than 

 their basal diameter. 



Studland, Dorsetshire. Three bushes growing close together on a 

 sandy soil among gorse and brambles, near a Bosa ruhiginosa. 



When I discovered them on July 2nd the}^ were in full bloom, 

 and on the 11th they were only beginning to wane. Branches gathered 

 on the same bushes on Aug. 10th and bi-ought to me by a friend, had 

 the green hips 12 to 16 mm. long by 7 to 10 wide, as long as or a 

 little longer than the pedicels, with convex, i-eddish-brown discs and 



