100 Cocker ell — A New Currant from Arizona. 



tional Museum; the material collected April 20, 1901, may be taken as 

 the type. 



I thought this was a distinct species, having only a description of H. 

 leptanthum, but Mr. Coville considers it a glandular-pubescent phase of 

 leptanthum. The only other Ribes observed in the region of R. I. vega- 

 num is R. longiflorum, Nutt. (at Las Valles). Going north of Las Vegas 

 towards San Ignacio, the beginning of the transition zone is marked by 

 the abundance of R. cereum. Passing up Sapello Canon to Beulah, in 

 the Canadian zone, R. cereum vanishes, and we have instead R. lentum, 

 R. irriguum, and a species discovered by my wife (only obtained in fruit) 

 which Mr. Coville thinks is R. mogolloniciim, Greene. Going still up- 

 ward, on the top of the Las Vegas Range, at 11,000 feet (Hudsonian 

 zone) we meet with only one of the Beulah Rihes — R. lentum; while 

 under the spruce trees grows one not seen before, identified by Mr. Co- 

 ville as R. wolfii. 



