214 Chaetophoraceae 



so troubled ; possibly the peculiar consistence of the gelatinous in- 

 vestment makes the two former species better fitted for sheltering 

 animal inhabitants. Furthermore in both stations C. attcnuata 

 harbored the same species of rotifer, while a different species is 

 found in C. pisiformis. 



4. Chaetophora incrassata (Hudson). 



Ulva incrassata Hudson, Flor. Ang. 572. 1778 [Ed. 2] ; 

 Eng. Bot. pi. cjdy. 1802. 



Chaetophora lobata Schrank. Der Naturf. 19: 126. 1783; 

 Baier. Flor. 2: 491. 1789. 



Rivularia Cornu-Damae Roth, Cat. Bot. I : 212. pi. 6. f. 2. 

 1797; Ann. of Bot. 1: 256. 1805. 



Rivularia endiviaefolia Roth, Romer's Archiv f. Bot. I 3 : 51. 

 1798; Cat. Bot. 2: 249. 1800; Ann. of Bot. 1: 257. 1805. 



Tremella palmata Hedwig, Com. Trem. Nost. 70. /. 4.-J . 1 798. 



Conferva incrassata Bosc, Bull. Sci. Soc. Phil. 2 : 145-6. //. 

 11. f. 2. A-C. 1800. 



Batrachospermum fasciculatum Vauch. Hist. Conferv. 116. pi 

 ij.f. 1, 2. 1803. 



Myriodactylon incrassatum Desvaux, Journ. de Bot. 2 : 307. 

 1809. 



Chaetophora endiviviaefolia Agardh, Disp. Alg. Suec. 42. 

 181 2. Lyngb. Tent. Hyd. Dan. 191. pi. 65. 18 19. Hassall, 

 Brit. F. W. Alg. 125. pi. 9. f. 1, 2. 1845. Kiitz. Spec. Alg. 

 532. 1849; Tab. Thyc. 3: pi. 21. 1853. Harvey, Ner. Bor. 

 Am. 3 : 69. 1853. Rabenh. Krypt. Flor. Sachs. 1: 272. 1863. 

 Wood, Hist. F. W. Alg. 210. 1873. Cooke, Brit. F. W. Alg. 

 194. pi. 78. f. 2. 1883. Wolle, F. W. Alg. 11y.pl. 104. 

 1887. 



Rivularia incrassata Purton, Midi. Flor. 3: 179. 18 17. \_fide 

 Cooke.] 



Chaetophora Cormi- Damae Agardh, Syst. Alg. 29. 1824. De- 

 Toni, Syll. Alg. I : 187. 1889. Saunders, Flora of Neb. I : 64. 

 pi. 1 J. f. 1. 1894. 



Chaetophora clavata Hornem. Flor. Dan.//. 1728./. 2. 183 1. 



Batrachospermum Americamun Schweinitz, MS. 



Chaetophora Sclnvcinitzii Bailey, MS. 



