Fungous Flora of the Soil 473 



becomes a shrunken hyaline appendage of 3-4M in length; secondary 

 appendages entirely wanting. 



Hab. Soil from oat field July and August, igio, Cornell University, 

 Ithaca, N. Y., by the writer. Plant pathology herbarium No. 5,906. 



Peritheciis sparsis vel gregariis, pyrifomiis-subglobosis, immersis demum 

 subliberis vel liberis, membranaceis-coriaceis, atris, opacis, ostiolo conico, 

 recto, vel parum ou-vato; ascis 4-cellularibis, cylindraceis, apice rotun- 

 datis, basim versus sensim attenuatis, perforatis, 90-150 x ii-16/x, para- 

 physibus ascos superantibus, filiformis, sursum attenuatis, articulatis; 

 sporidiis uniseriatis, elongato-ovatis demum subglobosis, i-nucleatis, 

 tuberculatis, atrofuscis, 12-14 x 16-18^, candaque conica saepe ciurvula 

 hyalina 6-8^1 long. 



Hab. In campus arabilis, Ithaca, N. Y. 



Differs from other species of the genus in the perforate ascus and the 

 lack of secondary appendages. Distinctive characters : 4 spores, perforate 

 ascus; spores tuberculate with primary appendages only. 



It is to be observed that this species is placed in the genus Pleurage 

 rather than to form a new genus. This species has been cultivated for 

 over one year on nutrient agar, soil solution agar, and straw plugs, and 

 the above characters are found to be constant. 



The formation and development of the spores has been carefully 

 studied. In all cases the primary appendage is formed as given by Griffiths 

 (The North American Sordariaceae, 21. 1901). lodin and eosin stains 

 have been used to locate secondary appendages in alcoholic and aqueous 

 mounts, but these have never been seen. 



Sporormia fasciculata n. sp. 



Perithecia scattered or aggregated in small clusters, sunken, with small 

 papilliform beak projecting to the surface, later 

 many become partly exposed, globose, thin mem- 

 branaceous, inclined to be brittle, black, opaque, 

 250-525/i in diameter. 



Asci 8-spored, broad clavate, broadly rounding 



above and rapidly contracting just below spores to 



form a long slender stipe, 45-60 by 1 6-3 o/x; stipe about 



two fifths the length of the ascus ; paraphyses absent, p j ^^ _ 1 1 - . _ sporormia 



Sporidia fasciculate, straight or very sHghtly fasciculata. A, peri- 



j 11 J jji.t-i.1. J 11 theciiim,.x6o;B, ascus, 



curved, 4-celled, rounded at both ends, deeply showing fasciculate 



constricted and easily separating, 25-30 by 4-7M, arrangement of asco- 

 , r 11- i ' .-u 1 spores, X 236.6; C, ar- 



ranging m color from hyalme when young through cos pores, x 236.6 



light brown to dark brown, opaque. 



Distinctive characters: large perithecia, spores fasciculate, paraphyses 



wanting. 



