704 



■rrt(' 





|.!'I 





tr'l 



If' 



ovate-elliptical, 3-5-septate, constricted at the middle septum, one or 

 two of the cells divided by a longitudinal septum, brown, 15-25 x 

 7-8 fjt. 



On decorticated, exposed wood, also (but less frequently) on dead 

 limbs still covered M'ith the l)ark; common. 



Var. Gerardi, C. & P., has the perithecia mostly shorter and 

 bi-oader, with the lips more open ; var. vitkolum, C. & P., has the 

 asci mostly shorter and broader, 75-90 x 15-18 ft, and the sporidia 

 more or less perfectly biseriate. Cooke makes the sporidia 3Gx 12 //. 

 We find none over 25 x 8 //. //. Rousselii, De Not, (sec. specc. from 

 Gerard, compared by him witii authentic specc. from Duby), can not 

 be distiii<>uisho(l in any way from H. Mori, Schw., as rejn-esented l)y 

 specc. in Herb. Schw., nor can we, after a careful examination of many 

 specc. from different localities, durinsif the past ten years, find nny 

 reliable characters by whicii any of the so-called species altove (piotod 

 can be safely separated. Specimens of //. liouHselii, with elon<ratO(l 

 perithecia, appear quite distinct from specc. of //. Gerdrdi, C. & P.. 

 with shorter, oblong- or elliptical perithecia, l>ut these extremes arc 

 connected by a f^rjvduated series of forms passing impercejttildy into 

 each other so as to completely fill up the gap; nor do the s{)oridia fur- 

 nish any distinctive characters. At first they are 3-septate, becoming 

 almost always 5-sei>tate, and not seldom ()-7-sei)tate. 



H. varisibile, C. & P. Disc, of the U. S. p. 33. 



"Erumpent, then superficial, following the interstices of the 

 woody filters of the matrix, narrowly elliptical or linear and elongated, 

 straight or flexuous, often parallel, faintly striate-nigose, flattened along 

 the apex, slightly narrowed at each end, lips closely connivent. Asci 

 cylindrical, stipitate. Sporidia uniseriate, very v.M'iable in size and 

 form, ovate or elliptical, or broadly clavate, constricted in the middle. 

 5-7-septate, at length with longitudinal divisions, dark brown." 



On old chestnut posts, ttc. New York (Peck). 



The Ibregoing is the diagnosis given l)y Cke. (1. c). Specc. from 

 Peck have the perithecia crowded, 1-2 nun. long; lips incurved so as 

 to leave a distinct furrow along the apex, often l)ut jtartially closed. 

 exposing the linear disk. Often the )>erithecia are marked with a 

 single deep furrow close to and parallel with the lips, but quite as 

 often the furrow is wanting and the flattened apex of the perith(HMiim 

 is faintly transversely I'ugulose. Asci paraphysate, short-stipitate. 

 J). s|». aliout 70-75 x 10-12 ji. Sjmridia sul)biseriate, ovoid, 3-7-.-:('ii- 

 tate, somewhat cimstrictcfl in the middle, altout 20 x 8 //, dark brown. 

 with a partial longitudinal septum running through the central I'clls 

 What ap]»ears to be the same has been found at Newfield, N. J., on 

 bare, decaying wood of Quercus and Pynis Mid us. 



