Enteridium. 47 



Eiitcridiniii Bozcanum, Wing., Proc. Acad. Nat. Sci. Phil., 

 1889, p. 15G. 



Beticularia (?) Eozcana, Rost., Mori,, SuppL, no. 179 ; Sacc, 

 Syll., no. 1425. 



Licea fallax, Pers., in Herb. Schwein. 



On wood, bark, &c. Britain (Scarboro') ; France; United 

 States. 



The spaces in the capillitium, wliich represent the individual 

 sporangia of the aethalium, have about the same dimensions 

 in the same plant, but vary considerably, comparing one speci- 

 men with another. The extremes of variation may be ex- 

 pressed by the proportion 1 to 10. Sometimes the bands of 

 the capillitium are very much lacerated longitudinally, and 

 form a filamentous mass, when the characteristic structure of 

 the genus is entirely lost after the dispersal of the spores. 

 Capillitium yellowish under the microscope. 



The whole of the above is from Mr. Wingate's article, which 

 also contains an interesting historical sketch of the species. 



The present species appears to be generally distributed in 

 the United States, judging from the specimens in the Kew 

 herbarium sent by various American correspondents; one 

 specimen communicated by Ravenel from Lower Carolina is 

 irregularly circular in outline, three and a half inches in 

 diameter and half an inch thick. The European form, judging 

 from the specimens I have seen, has the sporangial walls very 

 much reduced, and will probably be found in herbaria under 

 Beticularia, where I was at first disposed to place it until con- 

 vinced by Mr. Wingate of its nearer affinity with Enteridium. 



B. . S'porcs wartcd. 

 Enteridium simulans, Rost. 



Very similar to B. olivaccum, but the spores are free or loosely 

 aggregated, irregularly spherical, and minutchj wartcd all over, 

 10 — 12 IX diameter. 



Rost., Monogr,, Appendix, p. 81 ; Karst., ^Mvc. Fran., iv. 

 p. 12G; Sacc, Syll, n. 1400. 



