PHOMATACEAE 121 



(b) Spores not mixed with filaments; peridium of a single cottony layer 



Crucibulum 7: 43 

 (2) Sporangioles densely crowded in a glutinous substance 



Nidula 17: 215 

 2. Peridium with a single gelatinous sporangiole 



Dacryobolus 7:45 



II. Peridium double, outer stellate, inner with a single viscous sporangiole 



Sphaerobolus 7: 46 



FUNGI IMPERFECTI 



Secondary or propagative stages of other fungi, largely Ascomycetes, charac- 

 terized by the presence of conidia borne in perithecia-like or disk-like structures, on 

 a stroma, or on a mycelial mass. Many of these forms have been connected by means 

 of experiment with the corresponding perfect stage, but the vast majority of them 

 are found alone in nature. 



Order 16. PHOMATALES (Sphaeropsideae Sacc. 3:1) 



Conidia borne on simple or branched threads, so-called basidia, in pycnidia ; 

 pycnidia globose, conic, elongate, dimidiate, disk-shaped or cup-shaped, membranous, 

 carbonous, coriaceous or somewhat fleshy, usually black, sometimes bright-colored. 



Family 70. PHOMATACEAE (Sphaerioidaceae 3:1) 



Pycnidia globose, conic or lens-like, membranous, carbonous or subcoriaceous, 

 black, immersed or superficial, separate or in a stroma ; conidia from 1 to many- 

 celled, hyaline or dark. 



Hyalosporae 



3:1, 10: 100, 11 : 472, 14: 844, 16: 825, 18: 220 



Conidia i-celled, hyaline, globose, ovoid or oblong, often curved 



I. Pycnidia separate 

 1. Pycnidia smooth 



a. Pycnidia borne in discolored areas, i. e., maculicole 



Phyllosticta 3:3 



b. Pycnidia not maculicole 



(1) Conidia single, not in chains 



(a) Conidia muticate, not ciliate or trigonous 

 x. Subicle none 



(x) Pycnidia muticate or papillate, not rostrate or cylindric 

 m. Pycnidia erumpent or immersed 

 (m) Basidia i-spored, mostly short 

 r. Pycnidia papillate 

 (r) Growing on lichens 



Lichenosticta 16:851 

 (s) Not lichenicole 

 h. Basidia hamate Phomopsis 18:264 



