JOURNAL OF MYCOLOGY. 



Vol. 1. MANHATTAN, KANSAS, NOVEMBER, 1885. No. 11. 



SYNOPSIS OF THE NORTH AMERICAN SPECIES 

 OF ASTERINA, DIMEROSPORIUM AND 

 MELIOLA. 



BY GEORGE MARTIN. 



ASTERINA. 



AsTERi>«rA, Liv. Aan. Science Nat. 1845, 3, p. 59. (Etym. Aster from 

 the radiating mycelium.) Perithecia globose, depressed or lenticular, 

 membranous, subastomous, seated upon spots of black radiating subsu. 

 perficial (rarely subinnate) mycelium. Asci properly short and thick 

 mostly 8-spored ; sporidia two-celled, pleuriseptate or continuous, hya- 

 line or brown. Sylloge Fungoriim I, p. 39. 



The perithecia in the species we now find included in this genus 

 vary from an entire membranous sac to a mere covering of coalesced, 

 radiating hyphse, and the mycelium, w4iich typically forms black spots, 

 is often light colored, scant, evanescent or entirely obsolete. The genus 

 therefore contains some species nearly approaching Sphserella and Micro- 

 thyrium on the one hand and Ascomycetella on the other. 



The following classification has been adopted : 



A. Perithecia complete, depressed or lenticular. 



B. Perithecia incomplete, flattened or scutellate. 



C. Species imperfect or doubtful. 



Species with globose perithecia will be included in Dimerosporium. 



The quotation marks indicate that the species so enclosed are only 

 known to me through the published descriptions. 



It is proper that I should here state, that I am under great obligation 

 to my friend, J. B. Ellis, for furnishing me with specimens not in ray 

 herbarium, and for his criticirfm of many of my notes. 



A. Perithecia complete, depressed or lenticular. 



