8 



JOURNAL OF MYCOLOGY. 



6. G. STRiATUS, D C. Inner psridium depressed-globose, about i 

 an inch in diameter, the mouth prominent ; spores .0035— .0040 mm. 

 Carolina and Penn., Schweinitz under G. pectinatum f New York, Peck ; 

 California, Harkness ; Illinois, Andras ; Ohio. 



7. G. miBiLiCATUS, Fr. Inner peridium depressed-globose, about 

 i an inch in diameter, the mouth in a depressed marginate disk ; spores 

 .0035— .0040 mm. New Jersey, J. B. Ellis. 



d. Mouth ciliate-fimbriaie. 



a. Plants large. 



8. G. KADiCANS, B, & C. Outer peri Hum separating into two coats, 

 the inner coat vaulted ; inner peridium reddish, f of an inch in diameter ; 

 spores ? Carolina, Curtis, Ravenel. 



9. G. TRIPLEX, Jungh. Inner part of the outer peridium separating 

 and forming a cup ; inner peridium pallid; f— li inches in diameter ; 

 spores .0050— .0055 mm. Michigan, Foerste ; Ohio. 



10 G. FiMBRiATUS, Fr. Outer peridium single ; inner peridium 

 wanting the circular disk in which the determinate mouth of other spe- 

 cies is situated ; spores .0030— .0025 mm. Ea^-t and South ; California, 

 Harkness. 



b. Plants small. 



11. G. viTTATUS, Kalch. Lower surface of the segments of the 

 outer peridium longitudinally rimose, so as to appear white-vittate ; oth- 

 erwise not different from the next. Ohio. 



12. G. SACCATUS, Fr. Inner peridium globous or depressed-globose, 

 i— I of an inch in diameter, the mouth determinate ; spores .0030— .0035 

 mm. East and South ; Ohio. Perhaps the most common Geaster. 



13. G. LAGEN^FORMis, Vitt. Inner peridium ovoid, i an inch or 

 less in diameter, the mouth determinate ; spores .0030— .0035 mm. Ohio. 



e. Mouth dentate. 



14. G. RUFESCEisrs, Pers. Inner peridium subovoid, the mouth 

 determinate ; spores .0040 — .0045 mm. Carolina, Schweinitz ; California, 

 Emory. 



D. Inner 'peridium sessile, the spores large, .008 — .010 mm. 



f. Mouth ciliate- fimbriate. 



15. G. MAMMOSUS, Chev. Segments reflexed when dry ; inner peri- 

 dium depressed-globose, the mouth conic-acute in a circular disk ; spores 

 .008— .010 mm. California, Harkness. 



g. Mouth lacerate. 



16. G. HYGROMETRicus, Pers. Segments closely inflexed when 

 dry; inner peridium subreticulate, depressed globose, dehiscing irreguarly; 

 spores .008— .010 mm. East and South ; Wisconsin, Dr. Brown ; Cali- 

 fornia, Harkness. 



