The Myxomycetes of the Miami Valley, Ohio. 15 



6. Craterium aureum Schum. Sporangium obovoid to 

 oblong obovoid, stipitate, the walla thin and delicate mem- 

 brane above, thicker and firmer below, hyaline or yellowish, 

 almost entirely covered by a dense layer of granules of lime, 

 varying from lemon-yellow to orange in color. Stipe short, 

 erect, yellow to orange, brownish toward the base, longitudi- 

 nally plicate, rising from a small hypothallus. Capillitium 

 of slender tubules, forming a dense net-work, bearing numer- 

 ous rather small irregular nodules of lime, yellow or some- 

 times white in color, and often confluent along the axis of the 

 sporangium. Spores globose, very minutely warted, dark 

 violaceous, 8-10 mic. in diameter. 



Growing on old leaves, sticks, herbaceous stems, etc. 

 Sporangium and stipe .7-1.0 mm. in height and .3-. 5 mm. in 

 diameter, the stipe .2-4 mm. long. The elongated form is the 

 common one in this region. Craterium mutabile Fr. 



b. Stipe longer than the sporangium. 



7. Craterium nodulosum C. & B. Sporangium globose 

 or obovoid, stipitate ; the greater part of the wall a thin 

 hyaline membrane, easily breaking away, covered externally 

 with large white scales and nodules of lime; the basal por- 

 tion naked, thickened, and more persistent, red-brown and 

 plicate." Stipe long, erect or inclined, plicate, red-brown, 

 rising from a small hypothallus. Capillitium of tubules 

 forming a loose net-work, containing a variable quantity of 

 lime in the shape of long irregular white nodules, sometimes 

 confluent, with pointed lobes and branchlets. Spores globose, 

 very minutely warted, dark violaceous, 10-12 mic. in diameter. 



Growing on old wood, bark, leaves, etc. Sporangium .5~.6 

 mm. in diameter, the stipe two or three times as long. It is 

 Badhamia nodulosa C. & B., Journal of Mycology, Vol. V, p. 

 186. Ravenel's specimens are on Acacia bark. Mr. Webber 

 sent me elegant specimens from Florida where, he says, it 

 grows commonly on the leaves and bark of the orange trees. 



8. Craterium maydis Morgan, n. sp. Sporangium 

 globose or obovoid, stipitate; the upper part of the wall a 

 yellowish membrane, thin and fragile, covered with large 

 thick scales and nodules of lime, amber-colored to golden- 



15 



