BOTANICAL GAZETTE. 55 



spores subglobose or broadly elliptical, .0002-.00025 of an inch 

 long. 



Arizona, June. Pringle. 



This is a singular species of Lycoperdon^ belonging to the sec- 

 tion Bovistoides, but having the peridium of unusual thickness. It 

 is also apparently destitute of any cellular base, in which respect 

 it approaches the genus Bovista, but the character of the threads 

 of the capillitium points to Lycoperdon as its proper genus. 



Hendersonia Cerei. — Perithecia minute, hemispherical, some- 

 times collapsed or depressed about the papilliform ostiolum, black: 

 spores numerous, oblong, colored, triseptate, constricted at the septa, 

 .0008-0009 of an inch long, about .0003 broad, the second cell, from 

 the apex sometimes divided by a longitudinal septum. 



Dead wood of Cereus giganteus. Arizona, April. Pringle. 



The division of the second cell of some of the spores indicates 

 an approach to the genus Dichmmra Cooke£!amarosporium Sehulz. 



Asteroma Pringlei. — Spots orbicular, epiphyllous, black, two 

 to four lines broad, the tips of the radiating hyphse sometimes dilat- 

 ed; perithecia convex, black, irregularly or sometimes concentrically 

 arranged; spores large, oblong or sabfusiform, generally acute at the 

 extremities, slightly colored, .001Q-.002 of an inch long, .0005- 

 .0006 broad, often with one to three muclei. 



Leaves of Quercus Jiypoleuca. Arizona, July. Pringle. 



Most of the specimens are sterile, and those that are fertile do 

 not appear to be in very good condition. 



Ustilago cylindrica. — Attacking the spikes of the host plant 

 and converting them into a cylindrical mass of spores six to ten lines 

 long, about one line thick, invested bj r a thin cinereous at length 

 lacerated membrane; spores subglobose, minutely roughened, brown- 

 ish-black, .00035-0004 of an inch in diameter, intermingled with 

 large irregular unequal pale cellular bodies .0008-0014 of an inch 

 broad. 



Grass. Arizona, June. Pringle. 



The host plant is probably some species of Andropogon. The 

 cylindrical mass into which the inflorescence is converted by the fun- 

 gus resembles somewhat the ergot of rye in external appearance. 

 but it is usually more slender than the ergot. The rachis forms a 

 white central columella which runs through the mass of spores. 



Pileolaria effusa, — Forming a continuous or circumambi- 

 ent velvety reddish -brown stratum over the young branches, petio- 

 les and leaves of the host plant ; spores subglobose, minutely rough- 

 ened, .00096-.0011 of an inch in diameter, uninucleate; pedicel 

 short, colorless, .0005-0008 of an inch long. 



Living branches and leaves of Rhus, probably is*, aromatica or 

 B. triloba. 



Arizona. May. Pringle. 



This is very distinct from Pileolaria brevipes, our eastern 



