SURVEY OF MINNESOTA. 83 



Gen. Spumaria. Fr. 



478. S. alba. D. C. White Spumaria. Living grass. June. 



Gen. Ptychogaster. Ca. 



479. P. albus. Corda. White Ptychogaster. On ground. July. 



Gen. Diderrna. P. 



480. D. farinaceum. Peck. Invests fern stems in low woods. 



481. D. Marlae-Wilsoni. Clinton. Sticks, woods. Aug. 



482. D. globosum. Fr. Globose Diderrna. Dead leaves. Sept. 



Gen. Didymium. Schrad. 



483. D. melanopus. Fr. Black-stemmed Didymium. Sticks. Aug. 



484. D. connatum. Peck. Decaying Bussula. Sept. 



485. D. furfuraceum. Fr. Scurfy Did. Rotten wood. July, Aug. 



486. D. squamulosum. A. & G. Scaly Did. Dead leaves, &c. Aug. 



487. D. farinaceum. Fr. Mealy Did. Dead leaves. Aug. 



488. D. pertusum. Berk. Pierced Did. Stumps 1 . Oct. 



Gen. Physarum. P. 



489. P. pulcherripes. Peck. Rotten wood. July. 



490. P. csespitosum. Peck. Rotten wood. Aug. 



491. P. atrum. Fr. Black Physarum. Dead Branches. Aug. 



Gen. Angioridium. Grev. 



492. A. sinuosum. Grev. Twisted Angioridium. Sept. 



Gen. Craterium. Trent. 



493. C. mutabile. Fr. Changeable Craterium. Bark. July. 



Gen. Diachaja. Fr. 



494. D. elegans. Fr. Elegant Diachaea. Dead leaves. Aug. 



Gen. Stemonitis. Gled. 



495. S. fusca. Bath. Brown Stemonitis. Dead wood. June. 



496. S. ferruginea. Ehib. Rusty Stemonitis. Dead wood. July. 



497. S. ovata. P. Ovate Stemonitis. Rotten wood. June. 



498. S. obtusata. Fr. Obtuse Stemonitis. Rotten wood. June. 



