252 



Mycologia 



Platystomum compressum (Pers.) Trev. 



On old branches of Ribes inebrians Lindl. (14734 p.p.") and on 

 old branches of Salix cordata Watsoni Bebb (14740). Also 

 abundant on old branches of Crataegus erythropoda Ashe (14781). 



Lophidiopsis nuculoides (Rebm) Berl. 



On old branches of Symphoricarpos oreophilus Gray (14754 

 p.p.). Only a few scattered perithecia found. 



Family : Hysteriaceae 



Hysterium Standi eyanum sp. nov. 



Perithecia scattered, rarely 2-3-seriate, erumpent-superficial, 

 narrowly elliptic, lips closely connivent except in the middle some- 

 what open, black, .5-2 mm. long; asci clavate-cylindric, rounded 

 at the apex, short-stipitate, 8-spored, 70-75 X 10 ,u; spores over- 

 lapping biseriate, oblong-fusoid, straight or curved, subobtuse at 

 the ends, 4-7-septate, unconstricted, the third or fourth superior 

 cell globose, enlarged, each cell nucleolate when young, hyaline at 

 first, becoming yellow or reddish-brown, 20-23 X 3-33-4-5 



Differs from Hysterium N otarisianum Rehm in narrower and 

 longer spores, in the location of the enlarged cell, and in the ab- 

 sence of any occasional longitudinal septum in any of the cells. 



On old scrub oak branches (Quereus Fendleri Liebm. ?) 

 (14693). 



Hysterographium Bakeri Earle 

 On old branches of Cercocarpus montanus Raf. (14789 p.p.). 



Lophodermium arundinaceum (Schrad.) Chev. 



On Koeleria cristata (L.) Pers. (13591), on Calamagrostis 

 hyperborea americana Vasey (13624) and on old leaves of Dan- 

 thonia intermedia Vasey (14312 a, p.p.)- The form on Dan- 

 thonia is probably the var. alpinum of Rehm. 



Order : Pezizales 

 Lachnella flammea (A. & S.) Fr. 



Lachnella rhoina Earle PI. Baker 2: 5, 1901. 



On old branches of Schmaltzia Bakeri Greene (14720, 14756 

 p.p.). 



