( 349 ) 



come densely gregarious and black, the single hyphae oliva- 

 ceous, continuous, about 25-35 x 3 P 5 conidia abundant 

 subhyaline, subcylindric, straight or slightly flexed, ends 

 rounded, minutely guttulate, continuous, or at length faintly 

 1-2-septate, 75-90 x 5 }t. 



On Thermopsis arcnaria, Glen Rocks, Montana, July 15, 

 1901, Aven Nelson, no. 4818. 



Ohleriella gen. nov. (Amphisphaeriaceae). 



Perithecia as in Ampkisphaeria, asci large, at first 8" 

 spored, the young spores hyaline and several-celled, at ma" 

 turity brown and separating within the ascus at all the septa' 

 the ascus thus becoming many-spored and the spores unicel" 

 lular. 



This is clearly related to Ohlcria in which the 4-celled 

 spore divides into two 2-celled parts at maturity, the ascus 

 thus becoming 16-spored, or it may be compared to a Tramc- 

 tosphaeria in which the spores fall to pieces in the ascus be- 

 fore maturity. 



Ohleriella Neo-mexicana sp. nov. 



Perithecia thickly scattered, black, hemispheric-mammil" 

 late, erumpent, the base remaining covered by the whitened 

 wood fibers, not collapsing, ostiolum conspicuous, strongly 

 papillate, Y~Y mm. ; asci large, stipitate, subcylindric, at 

 maturity 48-spored, 150-200 x 25-30 /* ; paraphyses abun- 

 dant, thread-like ; ascospores about three-ranked, at first cyl- 

 indric, hyali ne, 5-septate, at maturity dark brown, opake, 

 separating into six suborbicular or from pressure subquad- 

 rate bodies that are about 8 tx in diameter. 



On old whitened woody stems, Albuquerque, New Mexico* 

 Nov. 29, 1901, T. D. A. Cockerell. 



Puccinia O.egonensis sp. nov. 



I. Involving considerable areas on the leaves and stems; 

 spermagonia minute, light brown, usually epiphyllous ; pseu- 

 doperidia densely aggregated, often amphigenous, short and 

 broad, Y\ x Y mm., margin short, somewhat lacerate, erect, 

 pseudoperidial cells 20-25 x 30 /x or occasionally much larger, 

 conspicuously roughened with short and prismatic or occa- 

 sionally longer and flexuous ridges ; aecidiospores irregularly 



