302 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Key lo the Species of Bulbiferous Fungi. 



Primordium normally involving more than one cell. 

 I. Bulbils black or smoke-colored. 



1. Bulbils 75-100 /j indiam. margin even Cubonia buUrifera. 



1: '200-300/j " ' irregular. .Papulosporapannosa. 



II. Bulbils yellowish red to dark brown. 



1. Hyphae showing elamp-connections. 



1. Bulbils dark brown or chocolate colored. 



i. Bulbils 65-80 m in diam. clamps conspicuous. 



< 'orticium alutaceum. 

 ii. 125 175 ii " margin even, clamps incon- 

 spicuous Papulospora anomala. 



2. Bulbils yellowish or lighl brown. 



i. Bulbils light yellow, hyphae radiating conspicuously. 



Grandinia cruslosa. 

 ii. Bulbils brownish yellow, hyphae formed evenly. 



"No' 200." 



2. Hyphae not showing clamp-connections. 



1. Bulbils scanty, perithecia usually present. 



i. ' Perithecia with neck, lateral and terminal setae. 



Melanospora cervicvla. 

 ii. " papilla and terminal setae. 



Melanospora papittata. 



2. Bulbils abundant, perithecia usually absent, 

 i. Primordium intercalary. 



( i) . Bulbils brownish-yellow, central cells 28-55 m 



in diam Papulospora immersa. 



(ii). Bulbils straw-colored, central cells 10-20 /i in 



diam Papulospora irregularis. 



ii. Primordium one or more 1 lateral branches, 



(i). Primordium normally a single lateral branch, 

 a. Primordium a spiral. 



§ Cells heterogenous, definite cortex. 



A. One central cell. 



# Cortex complete. 



Papulospora parasitica. 



* # Cortex incomplete. 



Acrospeira mirabilis. 



B. More than one central cell. 



% Spiral in one plane, cortical 

 cells spinulose 



Papulospora spinvlosa. 

 HI * Spiral normally in more 

 than one plane, 2-6 central 

 cells. 

 a Bulbils dark brown. 



Papulospora coprophila. 

 (3 Bulbils brick red. 



Papulospora rubida. 

 §§ Cells homogenous, bulbils 21-36 n in 

 diam. brownish producing sporo- 

 trichum spores. 



Papulospora sporotrichoses. 



