24. ROSACE^E. 59 



10. BOSA. Rose. 



A. Spinosissimce. Shoots setose; prickles crowded, subulate, 

 straight or nearly so. 



1. R. SPINOSISSIMA, L. Burnet-leaved Rose, Scotch-Rose. A 

 much branched, erect, prickly shrub; 4 18 in. high, prickles 

 unequal, straight, intermixed with aciculi and setae. Le. pinnate, 

 leaflets glabrous, simply serrate, edge without glands. Fl. large, 

 white or pink. Fruit globular, glabrous, dark purple or black. 



Heaths and sandy sea coasts. (B) Sh. 5. Common on the shores of the Firth 

 of Clyde; Bute; Cumbrae; Arran, &c. 



2. R. SABINI, Woods. Sabine's Rose. An erect shrub, 3 5 

 ft. high; prickles scattered, passing gradually into aciculi and 

 setae. Leaflets ovate, doubly serrate, slightly hairy above, densely 

 so and glandular beneath, secondary serratures gland-tipped. 

 Cal. segments slightly pinnate, tube aciculate and setose. Fl. 

 white or pink. 



Very rare. Daldowie woods, questionable if wild. (B) Sh. 6. " Lamlash," 

 ./. G. Baker. 



Var. Donidna, Woods. Cal. segments leaf -pointed, simple. 

 Le. very hairy on both sides. 



Rare. Cumbrae and Bute. Sh. 6. 



Var. involuta, Sm. Le. with simpler secondary serratures^ 

 nearly smooth above, hairy principally on the veins beneath, 

 slightly glandular. 



"Lamlash, Isle of Arran," Lands, and G. Don. Sh. 6. 



B. Villosce. Shoots mostly without setae, prickles slender, 

 abruptly dilated at the base, slightly curved. 



3. R. MOLLISSIMA, Willd. ; Fries, (villosa of authors) Soft- 

 leaved Rose. An erect shrub; prickles with needle-like points. 

 Leaflets broadly ovate or elliptical, doubly serrate, serratures 

 shallow and open, furnished with 2 or 3 gland-tipped teeth; 

 upper surface covered with soft gray hairs, densely so beneath. 

 Peel, short, with gland-tipped aciculi. Cal. tube nearly globose, 

 mostly with gland-tipped aciculi ; segments simple, outside 

 covered with s^iiee. Fl. varying from white to red. 



Frequent. Hedges and thickets. (B) 6 7. Banks of Clyde; Cathkin hills; 

 Kittoch glen; Kilmun ; Cumbrae; Bute and Arran. Corrieburn, with tube of 

 calyx densely aciculate and setose. 



Var. ccerulea. Peduncles andcal. tube smooth. Le, with a 

 few scattered glands below. 



"Woods at Crossbasket," Hooker. Hills above Mugdock reservoir. 



4. R. TOMENTOSA, Sm. Downy -leaved Rose. Of the same 

 habit as the last, and by many considered a variety, Prickles 



