444 TREMELLINACE^E Auricularia 



FAM. VI. TREMELLINACE^ 



Entire fungus homogeneous, gelatinous, collapsing when dry, 

 retaining its form when moistened, traversed internally by branched 

 hyphae which terminate in basidia at the periphery. Basidia vari- 

 able in form, elongate or fusoid, transversely septate or continuous, 

 undivided or forked at the apex, or subglobose and longitudinally 

 divided and bearing 2 to 4 sterigmata. Spores hyaline, from 'globose 

 to sausage-shaped and curved, continuous or septate, often becoming 

 variously septate on germination and producing sporidiola of different 

 forms. Species 20012041 



KEY TO THE SUBFAMILIES AND GENERA. 



Basidia elongate or fusoid, simple, transversely septate ... 



Subfamily I. AURICULARIOIDE/E. 



Attached broadly 97 AURICULARIA. 



Attached by a point 98 HIRNEOLA. 



Basidia subglobose at maturity, longitudinally 



quadripartite Subfamily II. EUTREMELLINOIDE^E. 



Cup-shaped, truncate or irregularly lobed ... 99 EXIDIA. 



Pulvinate, gyrose 100 ULOCOLLA. 



Brain-like or lobed 101 TREMELLA. 



Convex, with a central hard nucleus 102 N^EMATELIA. 



Erect, spathulate 103 GYROCEPHALUS. 



Basidia cylindrical or clavate Subfamily III. DACRYOMYCETOIDE^;. 



Small, pulvinate, gyrose 104 DACRYOMYCES. 



Irregularly cup-shaped, sessile IO4A FEMSJONIA. 



Versiform, substipitate 105 GUEPINIA. 



Stipitate, hymenium on expanded apex 106 DITIOLA. 



SUBFAMILY I. AURICULARIOIDE^E 



Basidia elongate or fusoid, simple, transversely septate. 



Species 20012003 



XCVII. AURICULARIA Bull. 



(From a fancied resemblance in some of the species to an ear, 

 auricula)) 



Subcoriaceous or gelatinous when moist, broadly attached. 

 Hymenium remotely and reticulately costate or plicate, collapsing 

 when dry. Basidia cylindrical, transversely tri- quadri- or quinque- 

 septate, each joint or cell producing a single, slender sterigma from 



