246 CHARACE^E. [Chara. 



as well as the axillary compound ones, bracteas none. — E. 

 Bot. t 2140. E. Fl. v. I. p. 9.—Nitella gracilis, Ag. Syst. Alg. 

 p. 125. 



Fish-ponds in Jersey, Sherard. Boggy pools in St. Leonard's forest, 

 Sussex, Mr. Borrer. Llyn Idwel, N. Wales, Mr. W. Wilson.— My 

 specimens of this from Mr. Borrer, corresponding with those figured in 

 E. Bot., do appear, at first sight, distinct from C. flexilis. They are 

 small, delicate, pale coloured and very glossy. But I have other indivi- 

 duals from the same acute Botanist marked " C. gracilis as to ramifica- 

 tion, not as to size," which I cannot distinguish from C. flexilis. Mr. 

 Wilson's specimens are intermediate, but more allied to the E. Bot. 

 figure. Sir J. E. Smith observes that the nucules and globules are 

 usually together : Mr. Wilson finds them always in Llyn ldwel on dif- 

 ferent plants. 



** Opaque and very brittle, striated, often spirally. (Chara. Ay.) 



5. C. vulgaris, Linn, (common Chara) ; smooth opaque 

 brittle (but not incrusted) very obscurely striated, branches of 

 the whorls slender subulate, fertile ones with many short ramuli 

 or bractese 3 or 4 of which are much longer than the globule 

 and nucule that they accompany. — E. Bot. t. 836. E. Fl. 

 v. I. p. 6. Ag. Syst. Alg. p. 128. 



Ditches and slow streams, frequent. 



6. C. Hedivigii, Ag. (Hedwigian Chara) ; elongated smooth 

 opaque brittle (sometimes partially incrusted) obscurely stri- 

 ated, branches of the whorls subulate, the fertile ones with 

 many short ramuli or bractese 3 or 4 of which are shorter than 

 the nucule and globule that they accompany. — Ag. Syst. Alg. 

 p. 129.— C. pulchella, Wallr. Ann. Bot. p. 184. 1. 12. Ag. Syst. 



Alg. p. 129. 



Still pools ; Buxtead, Sussex, Mr. Borrer. Near Croft, Yorkshire, 

 Rev. J. Dalton. — Larger than the preceding, with more numerous fertile 

 branches and shorter bracteas. The branches are jointed in both at the 

 setting on of the ramuli or bracteas, which, being numerous, the joints 

 are consequently numerous. 



7. C. dspera, Willd. (rough Chara) ; slender opaque brittle 

 obscurely striated every where beset with patent scattered 

 spinules, branches of the whorls subulate, the fertile ones with 

 many short ramuli or bractese of which 3 or 4 accompany the 

 nucule or globule (on different plants) uncertain in length. 

 — Wallr. Ann. Bot. p. 185. t. 6./. 3. Ag. Syst. Alg. p. 130. 

 Grev. Scot. Cr. Fl. t. 339. — C. galioides, De Cand. (according 

 to specimens from the author). 



Pools of fresh water, Orkney, Mr. C. Clauston. Prestwick Carr, 

 Northumberland, Mr. W. Robertson. Irthing, Durham, Mr. Bowman. 

 Peat-pits in Cleiviog Farm, 4 miles from Holyhead, Mr. W. Wilson.— 

 In one of my specimens, from Montpellier, I find the globules on the 

 same plant with the nucules, but apart from them. 



8. C. hispida, Linn, (hispid Chara); opaque brittle striated 

 covered more or less thickly by a calcareous crust, branches 



