VOL. XV, PP. 99-100 APRIL 25, 1902 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW RIBES FROM NEW MEXICO. 



BY T. D. A. COCKERELL. 





Among the material collected during the past season in the 

 neighborhood of Las Vegas I find a new variety of Ribes lep- 

 tanthum Gray, which may be known as follows: 



Ribes leptanthum veganum, var. nov. 



Shrub about 2 to 3 m. high, with pale gray bark; on the branches 

 the bark is almost silvery, on the twigs it becomes reddish-brown; 

 prickles solitary on the nodes, or more abundant, long, slender, pale fer 

 ruginous; leaves shaped about as in R. rotundifolium, the deeply crenu- 

 late segments short and rounded; leaves and petioles with glandular hairs, 

 petioles also with a little tomentum; peduncles short, flowers in pairs or 

 solitary; calyx-lobes spreading, white, more or less margined with pink; 

 calyx-tube pale greenish, cylindrical, stout (3mm. wide); tube about 

 6 mm. long, lobes about 5^ mm.; petals slightly over 3 mm., little more 

 than half length of calyx-lobes, white tipped with pink; stamens not 

 reaching to end of petals; filaments bright crimson; pistil green, only 

 reaching to bases of stamens. Fruit glandular-hispid. 



Found along the Gallinas River, New Mexico, from about two miles 



below Las Vegas to Las Valles, from 5800 feet to 6300 feet altitude. 



Flowers during the last two weeks of April, and is freely visited by 



Andrena porterce. Ckll., and other bees. Typical specimens in U. S., Na- 



22 BIOL. Soc. WASH. VOL. XV, 1J02 (99) 





4- 1902 



