110 



moist. Asci cylindrical, 75-80x7-8 ,«. Sporidia uniseriate, elliptical, 

 hyaline, uniseptate, scarcely constricted, 11-12x4-5. ;U. 



Parasitic on old Valsa lutescens, Ell., on dead limbs of Quercus 

 coccinea, lying on the ground, Newfield, K. J. 



N. Rexiana, Ell. 1. c. and Journ. Mycol. Ill, p. 2. 



Perithecia minute, less than ^ mm. diam., flesh-color, becoming 

 darker, slightly compressed laterally, enveloped in white down, which 

 forms little tufts, appearing under the lens like some minute, tufted 

 raucedinous growth. Asci linear, 35—40 /i long, evanescent. Sporidia 

 uniseriate, oblong, hyaline, 1-2-nucleate, becoming uniseptate? 



Parasitic on Myxogasters {Chondrioderma spumarioides), Adi- 

 rondack Mts., N. Y., August, 1882 (Dr. Geo. A. Rex). 



N. lactea, Ell. & Morgan (in Herb.) 



Densely gregaiious. Perithecia globose, about 250 fi diam., yel- 

 lowish horn-color, densely clothed, except the bare, papilliform ostio- 

 lum, with a dense white coat of glandular-pruinose pubescence, which 

 finally disappears in part. There is also a, sparing, web-like, white 

 mycelium overrunning the matrix. Asci cylindrical, sessile, without 

 paraphyses, 55-65x6 fx. Sporidia uniseriate, elliptical, hyaline, not 

 constricted, 6-8x3|-4| //. 



On pores of some old Polyporus, Ohio (Morgan), on old Stereum, 

 subpileatum, Florida (Calkins), and on decaying wood of Melia, 

 Louisiana (Langlois). 



Species not well known. 



N. flbriseda, Schw. Syn. N. Am. 1542. 



Very minute, scattered, blood-red, pellucid, globose-ovate, papil- 

 late, adhering in dense clusters to the bark of dead chestnut limbs 

 froiji which the epidermis has peeled off, entirely glabrous, finally col- 

 lapsing, scarcely visible to the naked eye. Of this species nothing is 

 known to us except the description above (pioted. 



Among the loosened fibers of chestnut liark, Bethlehen), Pa. 

 (Schweinitz). Allied to Nectria aanguined. 



Cooke, in his synopsis, mentions a Nectria Smilacis, Schw. We 

 find no such species in Schw. Synopsis. 



N. mobilis, (Tode). 



Sphceria mobilis, Tode Fungi Meckl. II, tab. 9, fig. 71, Fv. S. M. II, p. 461. 



Perithecia very delicate, superficial, free, so as to be moveable 

 {"itt quaquaversus facile se moveri sinant") Ostiolum papilliform, 



