466 BUSE-FBUITS 



greenish white, exceeding the stamens; stamens roundish, blunt, 

 as long as the petals ; ovary and fruit densely covered with very 

 long slender prickles, as in R. Californicum. 



Mountains of northern California and Washington. 



This species is the western representative of B. cynoshati, but 

 its fruit appears to be more densely covered with longer and more 

 slender spines.* 



27. R. PiNETORUM, -Greene. t 



Bush 5-6 feet (15-25 decimeters) high, sparingly branched and 

 few-flowered; branches somewhat zigzag, smooth, thorns slender, 

 1 to several in a whorl; petiole long and slender; leaves thin, 

 smooth or barely pubescent; peduncles short, erect, mostly 

 1-flowered; flowers greenish or reddish yellow, %-% inch 

 (12-16 mm.) long; calyx tube cylindrical, about as long as the 

 lobes; lobes spatulate, reflexed, longer than the stamens; petals 

 and stamens equal in length ; anthers short and blunt ; style gla- 

 brous, undivided; ovary and berry thickly beset with prickles; 

 berry large and well flavored. Flowers in April; fruit ripens in 

 September. 



Described from New Mexico. 



28. R. LACUSTRE (Pers.), Poir. Lake or Swamp Gooseberry. 



(Fig. 95.) 



Upright shrub, the twigs and branches beset with straight, 

 slender prickles; thorns weak, single, or several in a whorl, espe- 

 cially on young growth; leaves heart-shaped, 3-5-parted, with the 

 lobes deeply cut, especially on young shoots; petioles long, 

 slender, glandular pubescent; peduncles long, filiform; pedicels 

 short, calyx open, flat, the tube nearly wanting, lobes broad, 

 greenish white ; petals fan-shaped, reddish, nearly as long as the 

 calyx lobes ; stamens short, anthers very short, each half divided ; 

 pistil cleft at summit; ovary glandular hairy ; berry small, bristly, 

 unpleasant. 



From New England, through Michigan, Minnesota and the 

 Rocky Mountains to northern California and far northwai'd. 



Westward the species becomes smaller. In the Rocky Moun- 

 tain region it is commonly glabrous (var. parvulum. Gray), and 

 toward the Pacific the leaves become downy pubescent and glan- 



*In Fascicle 2 of "A Flora of Northwest America," which has just appeared, 

 the author, Thomas Howell, describes a form found in the Siskiyou Mountains 

 under the name R. montanum. This name cannot stand should tlio species prove 

 valid, since it has already been applied to a South American species. 



tBot. Gaz. 6:157. 



