Draparnaldia 223 



During the first week of April, 1901, a visit to the station was 

 made to get material for distribution, but owing to the lateness of 

 the season no Draparnaldia had appeared. Before a second visit 

 in May, the encroachments of civilization had so disturbed the 

 brook that no vegetation remained, and it is to be feared that the 

 station is permanently lost. 



It was, therefore, particularly pleasing to stumble upon this 

 species during a field meeting of the Vermont Botanical Club in 

 July. The reason for finding this species still vigorous after an 

 extremely hot period, is probably that, in the Vermont bog, it was 

 growing at an altitude of two to three thousand feet. 



Doubtful or little known Species 



Draparnaldia Billingsii Wood, Proc. Am. Phil. Soc. 11 : 

 143. 1869; Hist. F. W. Alg. 208. pi. 14. f. 6. 1873. DeToni, 

 Syll. Alg. 1 : 191. 1889. 



There is nothing in Wood's description which marks this 

 species as especially different from the common forms. Possibly 

 it is to be identified with D. acuta. A fragmentary specimen 

 bearing the name was seen in the Wolle herbarium. Chodat dis- 

 poses of this species and D. critciata Hicks as forms of D. plumosa 

 without giving evidence of more knowledge of their character than 

 may be gained from the unsatisfactory published descriptions. 



Draparnaldia opposita (Lyngb.) Agardh, Syst. Alg. 59. 

 1824. Kiitz. Spec. Alg. 357. 1849 (sub Species inquire ndae). 

 Harvey, Ner. Bor. Am. 3: 71. 1857. DeToni, Syll. Alg. 1: 

 194. 1889. 



D. plumosa opposita Lyngbye, Tent. Hyd. Dan. 190. pi. 63 A. 

 1819. 



It is very doubtful whether the form reported by Harvey was 

 correctly named ; his description reads very much as though he 

 had a form of D. plumosa. Both the description * and figure 

 given by Lyngbye indicate a form very similar to our D. platy- 

 zonata. 



The specimen issued by Miss Tilden as D. opposita (Am. Alg. 

 12) was doubtless identified by the description of Harvey or of 



* " Ramis inferioribus subverticillatis ; penicillis brevibus, patentibus, oppositis ; 

 articulis diametro subaequalibus, lineis linis longitudinalibus notatis." 



