1 10 CRYPTOGAMIA FUNGI. 



09. RHYTISMA. Fungi circular swollen spots originating in the 

 substance of leaves ; surface obsoletely furrowed, opening 

 at length by transverse or irregular flexuose clefts ; inter- 

 nally solid, homogeneous. 



70. HYSTERIUM. Fungi solid oblong or linear sessile tuber- 



cles furrowed with a mesial cleft parallel to the longest 

 diameter. 



J- -j- Seeds diffused in the interior, globular. 



71. SCLEROTIUM. Fungi solid globose or oblong tubercles with- 



out aperture or dehiscence ; internally smooth and homo- 

 geneous. 



72. XYLOMA. Fungi circular plane spots or dots in leaves ver- 



ging to decay, without orifice or cleft; internally solid, 

 homogeneous. 



73. CEUTHOSPORA. Fungi depressed spots (black) in leaves, 



opening at last irregularly ; seeds collected into an internal 

 black nucleus. 



74. ERYSIPHE. Fungi minute spherical tubercles filled with 



globular seeds, and placed on a white filamentous cobweb- 

 like base ; parasitical on living leaves. 



( "M" Anomalous. 



75. RHIZOMORPHA. Fungi much branched, elongated, solid, 



ligneous, resembling the roots of shrubs : growing between 

 the bark and wood of decayed trees. 



* Fungi soft or gelatinous, homogeneous, sessile ; seeds naked, dif- 

 fused internally. On decayed wood and plants. 



76. DACRYMYCES. Fungus sessile, rounded, gelatinous, smooth ; 



internally filamentous, the filaments ascending with the 

 seeds interspersed. Small, gregarious. Hob. decayed wood. 



77- ILLOSPORIUM. Fungus soft, subgelatinous, entirely formed 



