Diagnosis sheet for Hypoxylon

           

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Taxon : Hypoxylon                Herbarium  n :	

Substrate:                       leg.:          det.:

Collecting date and locality:
	
Stromata:
	Shape: effused, pulvinate, peltate, discoid, hemispherical.
	Size:               long x            broad x         thick
	Surface:  colour:
            	 plane, irregular, wrinkled,	
                  perithecial mounds: lacking, inconspicuous, 
                  conspicuous, perithecia naked
	Subsurface: colour:
                  texture: waxy, woody, carbonaceous
	Carbonaceous stromatal layer discretely enclosing each 
	          perithecium: present, absent
 KOH pigments:                                        
 Subperithecial tissue: colour:                   thickness:
 Odour of underlying substrate:
Perithecia:
        Shape: spherical, obovoid, tubular, long tubular
        Size:                      high x                     diam
        Number of perithecial layers:
Ostioles:
        Lower than stromatal surface, at the same level as,
        Higher than stromatal surface;   colour:
        With a disc, without a disc; diam:          
                type: truncatum-type, bovei-type
        Surrounded by white substance, diam:
Asci:
        Total length:                 x                  broad
        Spore bearing parts: 
        Stipes:
        Apical ring: present, lacking, highly reduced; 
                     size:              high x              broad
                     amyloid, weakly amyloid, inamyloid.                
Ascospores:                                
        Colour: light brown, brown, dark brown, blackish brown
        Shape: ellipsoid-inequilateral, equilateral, crescent-shaped 
        Size:                     x                      M=
        Germ slit: conspicuous, inconspicuous straight, 
                   sigmoid, spore-length, less than spore-length
        Perispore: dehiscent, indehiscent in KOH;
                   ornamentation:
Natural anamorph: present, absent.
        Conidiogenous structure: Sporothrix-like, 
                                 Virgariella-like, 
                                 Nodulisporium-like, 
                                 Periconiella-like.
        Smooth, roughened, coarsely roughened.Chlamydospores +   -
        Conidiogenous cells: size:                       colour:
        Conidia:             size:                       colour:
Notes