218 Chaetophoraceae 



i. Draparnaldia plumosa (Vauch.) Agardh, Disp. Alg. Suec. 



42. 1812; Alg. Dec. 38. 1814; Syst. Alg. 58. 1824. Lyngb. 



Tent. Hyd. Dan. 189. 18 19. Hassall, Brit. F. W. Alg. 121. 



pi. 12. f. 1. 1845. (?) Kiitz. Spec. Alg. 357. 1849; Tab. Phyc. 



3: //. 14. f /. 1853. Rabenh. Flor. Eur. Alg.' 3: 382. 

 1868. Harvey, Ner. Bor. Am. 3: 72. 1857. Wood, 



Hist. F. W. Alg. 208. 1873. Kirchn. Krypt. Flor. 



Schles. 2 1 : 67. 1878; Mik. Pflanz. 11. pi. 1. f 18. 1891. 



Cooke, Brit. F. W. Alg. 193. pi 75./. /, 2. 1883. Wolle, 



F. W. Alg. 109. //. 94.. 1887. DeToni, Syll. Alg. 1: 191. 



1889. Saunders, Flora of Neb. I : 65. pi ip. f 1. 1894. 



Conferva mntabilis Roth., Cat. Bot. I : 197. 1797. (?) Dillw. 

 Brit. Conferv. pi. 12. 1802. (?) 



Batraclwspermum plumosnm Vauch. Hist. Conferv. 113. pi. 

 11. f. 2. 1803. DeCand. Flor. Franc,. 2: 59. 18 15. 



Draparnaldia hypnosa Bory, Ann. Mus. Hist. Nat. 12 : 405. 

 pi. 35 . f. 2. 1808. 



Conferva lubrica Eng. Bot. pi. 2087. 1809. Not Dillwyn. 



Tufts 1-1 5 cm. long ; branches spreading or ascending, sol- 

 itary or opposite, the fascicles of branchlets single, opposite or 

 whorled, generally crowded, erect or ascending, lanceolate to 

 ovate-acuminate in outline, their branchlets erect or ascending, 

 the rachis usually much extended at the apex, or at least easily 

 distinguishable from other branchlets ; ultimate branchlets subu- 

 late, or setiferous ; cells of larger branches generally nearly cylin- 

 drical, somewhat constricted at the joints, 45-70 fi in diameter, 

 1-3 times as long, terminal branchlets 6—10 fi in diameter; chlo- 

 rophyll band %-% as wide as the length of the cell, proportion- 

 ally broader in the small branches (//. 40, f. 1. 2). 



Exsic. : Tild. Am. Alg. 12, Minneapolis, Minn., August 

 1894, Chester, S. C, February, 1896 (H. A. Green). Phyc. Bor. 

 Am. 21, Bridgeport, Conn., February, 1892 (I. Holden). 



Attached to sticks and stones in running water. 



Vermont: St. Johnsbury, August(644); North Hero, June (680). 



Massachusetts: Haverhill, April (,555). 



Connecticut: Derby, April (539). 



New York : Central Park, April (317, 319), May (383, 595) ; 

 Syracuse, June, 1884 (L. M. Underwood). 



New Jersey : Hudson Heights, April (304) ; Demarest, No- 

 vember (218); Englewood, May (360). 



