The Myxomycclcs of the Miami Valley, Ohio. 31 



irregular patches. Stipes long, erect, usually simple, rarely 

 fasciculate and connate. Mass of capillitiuni and spores, 

 bright yellow ; elaters simple, c^iindric, 4 mic. in thickness, 

 ending in smooth points, 4-6 mic. long; spirals four, often 

 united by intervening branches, covered with numerous 

 irregular spinules. vSpores globose, minutely vvarted, 12-14 

 mic. in diameter. 



Growing on old wood and bark, Adirondack Mountains, 

 New York, Dr. Geo. A. Rex. vSporangium .5-. 8 mm. in 

 diameter, the stipe about i mm. in height. This Trichia is 

 conspicuous by the checkering or areolation of the upper sur- 

 face in the mature sporangia, affording a sharp contrast 

 between the brown patches and the yellow bands. 



>^2. CiiRvsoPHiDiA. vSporangia globose, obovoid or some- 

 what irregular, sessile, rarely with a short stipe, u.sually 

 closely crowded. Spores globose, the surface minutely warted. 



a. Elaters perfectly smootli. 



5. Trichia varia, Pers. Sporangia globose, obovoid or 

 somewhat irregular, gregarious and scattered or crowded, 

 yellowish, ochraceous or olivaceous, sessile, or with a very 

 short brown or blackish stipe. Mass of capillitiuni and 

 spores yellow; elaters long, simple or sometimes branched a 

 time or two, 4-5 mic. in thickness, ending in a smooth taper- 

 ing point, 8-12 mic. long; spirals only two, smooth, very 

 prominent in places, causing the elater to appear notched. 

 Spores globose, oval or somewhat irregular, minutely warted, 

 10-14 mic. in diameter. 



Growing in patches on old wood ; a very common species. 

 Sporangium .6-. 8 mm. in diameter, or when irregular some- 

 times elongated to i mm. or more. Extremely variable as to 

 the form of the sporangium, but readily recognized by its 

 elaters. 



6. Trichia Andf:rsoni, Rex. vSporangia globose or obo- 

 void, sessile, gregarious, closely crowded, or sometimes scat- 

 tered, the wall thickened with minute scales, in color brown- 

 ish-ochre or olivaceous. Mass of capillitiuni and spores 

 yellow ; elaters long, simple, 3-4 mic. in thickness, ending in 



