112 NEW YORK STATE MUSEUM 



Leptonia davisiana 



Pileus tenuis, submembranaceus, convexus, deinde planus vel late 

 depressus, fragilis, glaber, centro leviter squamulosus, siccus saepe 

 late striatus, nigrescente brunneus ; lamellae tenues, confertae, sub- 

 ventricosae, adnexae, albae, deinde incarnatae et pulverulentae ; 

 stipes gracilis, aequalis, glaber, farctus cavusve, pileo in colore 

 similis; sporae angulares, uninucleatae, 10-12x8-10 /u.. 



Pileus 1-2.5 cm latus ; stipes 1.5-3 cm longus, 1-2 mm crassus. 



In locis gramineis. 



Leptostromella scirpina 



Perithecia epipbylla vel rare ampbigena, suborbicularia vel 

 oblonga, discoidea concavave, subsuperficialia, atra; sporae sub- 

 bacillares, byalinae, curvae, continuae, utrinque acutae, 20-25 x 2-3 \x. 



In foliis emortuis Scirpi atrovirentis Muhl. 



Lysurus borealis serotinus 



Pars externa loborum receptaculi alba; lineae candidae ab basi 

 stipitis radiantes, aequales in numero receptaculi lobis, plagasque 

 lineares in superficia interna volvae formantes. 



Macrophoma burserae 



Perithecia minuta, 100-200 fi lata, epidermide tecta, gregaria vel 

 aggregata et pustulas parvas inaequales leviter prominentes et saepe 

 confluentes formantia, atra, intus alba; sporae ellipsoideae, subhya- 

 linae, 16-20 x 10-12 fi. 



In cortice Burserae gum mi ferae Jacq. 



Macrophoma numerosa 



Perithecia minuta, .3-. 5 mm lata, dense gregaria, membranacca, 

 in cortice nidulantia, erumpentia, atra, intus albida ; sporae oblongae 

 fusiformesve, continuae, interdum binucleatae, utrinque acutae, 

 12-20 x 3-4 fi; sporophores brevissimi vel obsoleti. 



In ramulis emortius Robin i a e pseudacaciae L. 



Morchella conica serotina 



Pileus conicus vel irregularis, apice subactus vel late rotundatus, 

 interdum perforatus, saepe sterilis et brunnescens, costis acie 

 albidis; stipes minute squamulosus. Serotina. October et 

 November. 



