110 



moist. Asci cylindrical. 7~>-SOx7-<s it. Sporidia iiniserhitr. elliptical, 

 hyaline, uniseptnte. scarcely constricted. 11-12x4-5 //. 



Parasitic on old Valsa luteseens, Ell., on dead limits of Qnercu* 

 coccinea, lying on the ground, Newfield, X. .1. 



X. 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 

 mucedinous growth. Asci linear, 35-40 /j. long, evanescent. Sporidia 

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



Parasitic on Myxoyasters (Chondriodertna spumarioides), Adi- 

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



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



Densely gregarious. Perithecia globose, about 250 p 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 //. Sporidia uniseriate, elliptical, hyaline, not 

 constricted, 6-8 x 3J-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 

 from 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 quoted. 



Among the loosened fibers of chestnut bark, Bethlehem, Pa. 

 (Schweinitz). Allied to Nectria w.tnynhtcu. 



Cooke, in his synopsis, mentions &N<x.'ti'iu N/////r/r/.x, Schw. We 

 find no such species in Schw. Synopsis. 



X. mobilis, (TodeJ. 



Sphtxrip. mobilis, Tode Fungi Meckl. II, tab. 9, fig. 71, Fr. S. M. II, p. 461. 



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

 (' l u,t quaquaversus facile se movert sinant") Ostiolum papilliform. 



