THE SMALL FRUITS OF NEW YORK 57 



pubescent, with more or less numerous, slender, patent bristles and sometimes with stalked 

 glands; calj-x-lobes narrow, acuminate, often with pinnately cut tips, strongly reflexed 

 during the time of flowering. Fruit mostly somewhat elongate, smooth or pubescent, 

 with erect sepals. 



The Ursini-Ruhus are all natives of the Pacific Coast, extending east- 

 ward to Idaho. They form an extremely variable group, aU considered as 

 one species by Focke, while five species have been recognized by Rydberg 

 out of which three species are admitted here. The range of variation is 

 such, however, that it is often difficult to say where one species ends and 

 the next begins. The available herbarium material is insufficient as it 

 usually lacks the characteristic new canes taken from the same plant. A 

 satisfactory state of taxonomy can only be reached when all the region has 

 been carefully explored and reUable material has been collected. Even of 

 the three historical species of this group, R. vitifoliiis, R. ursinus, and 

 R. macropetalus, only flowering branchlets have been collected. The Ursini 

 are of great pomological importance as they form the Pacific Coast region 

 dewberries. 



A. Flowers usually either staminate or pistillate only, rarely hermaphrodite 



B. Canes usually glabrous or thinly pubescent, often glaucous, with scattered often 

 remote hooked prickles. Leaves thin, green on both sides, leaflets irregularly 

 toothed, mostly pointed. Pedicels, cal>'x, and calyx- lobes with more or less 



numerous stalked glands. Fruits mostly glabrous R. macropetalus 



BB. Canes varying from slightly pubescent to tomentose; prickles numerous and densely 



set, usually slender and straight or only sHghtly cur\'ed, mostly smaller ones between 



them. Leaves pubescent or more or less grayish tomentose beneath. Leaflets 



usually more obtuse. Pedicels and cabpi verj^ rarely with glands 



C. Canes pubescent, often becoming almost glabrous. Leaves glabrescent; the 



middle ones on the flowering shoots 3-lobed R- vitifohns 



CC. Canes tomentose, rarely becoming glabrous. Leaves grayish tomentose beneath; 



the middle ones on the flowering shoots 3-foliolate R- nrsintis 



AA. Flowers hermaphrodite, i.e., with perfect stamens and pistils 



B. Leaflets broad, roundish, obtuse, grayish tomentose beneath; teeth roundish. . . . 



R. loganobaccus 



BB. Leaflets sharply pointed, green on both sides; teeth sharp, lanceolate. .R. titanus 



Rubus macropetalus. Douglas in Hooker FL Bor. Anier. 1:178, PL 59- i832;Rydberg 



N. Am. Fl. 22:460. 1913; Bailey Stand. Cyc. Hort. 5:3033- 1916; Bailey Gent. Herb. 



R. vitiJoUus. Card Bush-Fr. 332, fig- 64- 1898; Bailey Ev. Nat. Fruits 3SS. %• 78. 



1898. 



Canes terete, usually and at least in the second year glabrous, rarely thmly puberulous, 

 green or reddish, often with a glaucous bloom, remotely beset with more or less hooked, 

 small prickles from a broadened base. Leaves 3-foliolate or pinnately or pedately 5-foho- 

 late- stipules linear-subulate, hirsute or glandular; petioles, petiolules and midveins w:th 



