6 
Mycologia 
the larger size of the plants. The chief object of the present 
paper is to call attention to the number and variety of the species 
of the genus with the hope that these plants may receive more 
attention from collectors than they have formerly. 
Lamprospora De-Not. Comm. Critt. Ital. i : 388. 1864 
Crouania Fuckel, Symb. Myc. 320. 1869. Not Croiumia, 
Agardh. 1842. 
Plicaria Fuckel, Symb. Myc. 325. 1869. 
Barlaea Sacc. Syll. Fung. 8: hi. 1889. Not Barlaea Reich. 
1877. 
Detonia Sacc. Syll. Fung. 8: 105. 1889. 
Plicariella (Sacc.) Lindau in E. & P. Nat. Pfl. i 1 : 179. 1897. 
Barlacina Sacc. Syll. Fung. 14: 30. 1899. 
Pulvinula Boud. Hist. Class. Discom. 69. 1907. 
Plants small or medium sized (.5 mm. to 3 cm. in diameter), 
concave, plane or slightly convex, sessile, usually bright colored, 
some shade of red, orange or yellow, more rarely pallid or dark 
colored, purple or brownish-black, externally smooth or verrucose 
but never clothed with well-developed hairs, substance fleshy, 
hymenium often roughened with the protruding asci; asci 8- 
spored, operculate ; spores comparatively large, at first globose or 
subglobose, and smooth, at maturity often sculptured (spinulose, 
verrucose, reticulate, tuberculate or annulate), or remaining perma- 
nently smooth, hyaline or more rarely faintly colored yellowish or 
smoky-brown ; paraphyses filiform or clavate, straight or curved. 
Type species, Ascobolus miniatus Crouan. 
Key to the Species 
Plants small, not exceeding 5 mm. in diameter (usually 
1 or 2 mm.). 
Spores rough (reticulate, spinulose, verrucose, 
tuberculate, or annulate). 
Spores marked with ridges. 
Ridges giving rise to reticulations (net- 
like markings over the surface). 
Reticulations shallow, barely rough- 
ening the surface of the spore. 
Spores at maturity 20-22 /j, in 
diameter, ridges of reticula- 
tions about 1 fJ> thick. 
1. L. Crouani. 
