186 NEMATOPHYCE^E. 



Trentepohlia anrea, Ag. Syst. p. 36. 



Ectocarpus aureus, Lyngb. Hydro. Dan. t. 4-4. Grev. Fl. 

 Ed. 315. 



On walls, rocks, chips, bark, &c. 



Plate LXXII. Jig. 1. Portions of filaments X 400 a, zoospor- 

 angium ; b, zoospore; c, same at rest ; d, germinating zoospore. 



Chiroolepus odoratus. (Lyngb.} Ag. Syst. 35. 



Stratum thin, rather toinentose, rufous -tawny (when dry 

 cinereous, becoming greenish). Threads and branches abbre- 

 viated, erect, parallel, flexuously curved, torulose ; cells equal 

 or twice as long as their diameter. 



SIZE. Cells '02-'025 mm. diam. 



Eng. Fl. v., 381. Harv. Man. 190. Rabh. Alg. Eur. iii., 

 372. 



Conferva odorata, Lyngb. Hydr. Dan. t. 57. Johnst. Fl. 

 Berw. ii., 245. 



On the bark of various trees, especially of Birch and 

 Poplar. 



Plate LXX1I. fig. 2. Portion of thread of Chroolepus odoratus x 400. 



Chroolepus lolithus. (Linn.) Ag. Syst. p. 34. 



Stratum thin, or a line thick, reddish-orange, glaucous or 

 dirty greenish when dry, threads and branches elongated, rather 

 dichotomous, variously curved, ascending ; cells one and a half 

 or three times as long as their diameter, in the upper portion 

 of the branches reaching to double that proportion. 



SIZE. Cells '025-'04 mm. diam. Zoosporangium *05 mm. 

 diam. 



Eng. Fl. v., 380. Eng. Bot. ii., p. 189. Harv. Man. 189. 

 Mack. Hib. 246. Rabh. Alg. Eur. iii., 373. 



Byssus lolithus, Linn. Spec. 1638. Hull. Br. Fl. 308. 



Olivia riolacea, Gray. AIT. i., 350. 



Trentepohlia lolithus, Wallr. Comp. iv. 151. 



On rocks, in moist places. 



Plate LXXII. fig. 4. Portion of thread of Chroolepus lolithus X 400 ; 

 a, zoosporangium x 400. 



Chroolepus ilicicolus. Eng. Bot. ir., t. 2529. 



Filaments erect, alternately branched, forming tufts of a 

 permanent tawny-yellow. Cells nearly as long as broad. 

 SIZE. Cells about -03 mm. diam. 

 Conferva ilicicola, Eng. Bot. i., t. 1639. 



