Hill: Penobscot Plants. 247 



var. piLosiFOLius A. F. Hill/ Occasional in wet 

 woods. 



RuBrs ALLEGiiANiENsis Poi'tcp. *Common at Brooklin (A. 

 H. Graves) ; Isle an Hant (J. C. Arthnr in Herb. Gray). 

 Hybrids of this species, nnder tlie name R. nigrohaccus 

 Bailey, have been cited by Rydberg;,^ based on material 

 from Isle an Hant: B. nigrohacciis yi B. nigricans (J. 

 C. Arthnr, jSTo. 52) ; B. nigrohaccus X B. pergrafus (J. 

 C. Arthnr, ISTos. 55, 56) ; 7?, nigrohaccus X B. aniicalis 

 (J. C. Arthnr). 



RuBus PERGRATus Blancliard. Freqnent in moist clearings 

 and thickets. Deer Isle and Isle an Haut. The follow- 

 ing hybrids occnr at Isle an Hant :^ B. pergrafus X B. 

 arnica! is (J. C. Arthnr, jSTo. 53) ; B. pergrafus X B. nigro- 

 haccus (see nnder B. alleghaniensis) . 



*RuBTJS ELEGANTULUs Blanchard. Isle an Hant (J. C. 

 Arthnr, ]^o. 51), determined by Rydberg.* 



RuBus CANADENSIS L. Occasional in fields and pastnres. 

 This species inclndes B. amicalis Blanchard, cited from 

 Isle an Haut by Rydberg (J. C. Arthnr, N"os. 50, 58). 



RuBus RECiTRViCArLis Blanchard. Rocky pasture, Babson's 

 Ridge, Brooklin (No. 612). 



RrBFS HispiDUS L. Very common in fields and low ground. 



Daltbarda repens L. Infrequent. Wet mossy woods, 

 JSTaskeag Point, Brooklin (K"o. 657) ; Atlantic, Swans 

 Island CNo. 2274) ; Reach, Deer Isle (No. 2776). 



1. Rhodora 16: 152 (1914). 



2. N. A. Fl. 22=: 463 (1913). See also Bull. Torr. Bot. Club. 42: 



468 (1915). 



3. Rydberg, 1. c. 



4. Bull. Torr. Bot. Club 42: 153, 154 (1915). 



