224 Chaetophoraceae 



DcToni ; it is inconceivable that this slender, erect-branched form 

 should have been so identified by any one familiar with Lyngbye's 

 work. 



Agardh quotes in the synonymy of this species, Batrachospcr- 

 mnm Americanwn Schweinitz. This was in all probability merely 

 a manuscript name, but a specimen bearing this name in Schwein- 

 itz's hand in the Torrey herbarium is not Draparnaldia but Chacto- 

 phora incrassata ; it was so recognized by Bailey, who called it 

 Chaetophora Schweinitzii (cf. Kiitz. Tab. Phyc. 3:6. 1853). 



Draparnaldia spinosa Kiitz. Phyc. Germ. 230. 1845 5 Spec. 

 Alg. 356. 1849; Tab. Phyc. 3: pi. ij.f. 1. 1853. Wolle, Bull. 

 Torrey Club, 8 : 40. 1881 ; F. W. Alg. 109. pi. 93. f. 1-8. 

 1887. 



Wolle's figures appear to represent a plant different from any 

 known to us. Whether his specimens were correctly determined 

 can probably be decided only by a visit to his station, Glen 

 Onoko, Pa. No specimens bearing this name were seen in the 

 Wolle herbarium. 



Draparnaldia Ravenelii Wolle, F. W. Alg. no. pi. 93. 

 1887. DeToni, Syll. Alg. 1 : 193. 1889. 



Batrachospermum vagum Ravenelii Wolle, Bull. Torrey Club, 

 9 : 29. 1882. 



This species seems to possess strongly marked characters in 

 the large diameter (150—170//) of the filaments and the crowded 

 sessile fascicles of branchlets. We have found no report to show 

 that it has been collected since the type specimens were obtained 

 by H. W. Ravenel in South Carolina. It is strange, but rather in 

 keeping with Mr. Wolle's methods, that in describing this species 

 as Draparnaldia, no reference was made to the earlier disposition 

 of it as Batrachospermum. 



V. EPICLADIA Reinke, Alg. West. Ostsee, 86. 1889; Atlas 

 Deutsch. Meeresalg. 31. 1889* 



Thallus microscopic, creeping on the surface of its bryozoan 

 host, irregularly branched on all sides, often appearing to be com- 

 posed of a small central plate of cells extended into a fringe of 



*This genus was announced without diagnosis in Ber. Deutsch. bot. Gesell. 6 : 

 241. 1888, and De Toni, Syll. Alg. 1 : 151. 1889. 



