214 THE NORTH AMERICAN SLIME-MOULDS 



he had the American material before him; but his cited type is worth- 

 less, an entirely different thing. 



Does the reader care to see what the European type of our common 

 form, Wingate teste, really looks like, let him consult the Jour, of 

 Botany, Vol. XXIX., p. 263, 1891. 



2. Enteridium olivaceum Ehr. 

 1818. Enteridium olivaceum Ehr. 



/Ethalium depressed flat, oval or elongate, .3 cm. in extent, .6 mm. 

 thick when fresh, glossy, smooth, greenish-olivaceous-brown ; within a 

 spongy net-work representing sporangial walls which are thin, pale 

 olivaceous, perforate by circular openings, meshes surrounded by 

 wide plates; spores in clusters, six or more together, ovoid, distinctly 

 warted at the wider end, pale olivaceous, 9-1 1 fi. 



This, the type of the genus, is a very distinct species of this by 

 its structure readily distinguished form. Fries thought the species 

 might represent a less perfectly-developed reticularia, and therefore 

 wrote Reticularia oltvacea noting, however, the clustered spores 

 and the lack of hypothallus. 



Common, as would appear, in Europe and in S. America; rare 

 with us. Reported from N. Hampshire and we have one specimen 

 from Colorado. 



3. Enteridium minutum Sturg. 



1917. Enteridium minutum Sturg., Mycologia, IX, p. 328. 



i^thalia rounded or elongate, pulvinate, pale umber in color, 

 seated on a broad membranous base, 1.5-2 mm. in diameter; wall 

 wrinkled and usually marked with small scattered pits, pale-yellow, 

 membranous; walls of component sporangia, membranous, minutely 

 roughened, perforated with round openings, the margins of which 

 show many free threads; or reduced to irregular, anastomosing 

 strands arising from the base of the aethalium, with membranous 

 or net-like expansions at the angles and with many delicate, free, 

 pointed ends. Spores pale-yellow, usually united in twos or threes. 



