82 ACOTYLEDONS. ALG^c. Conferva. 



HAB. Stagnant waters, frequent, Hopk. 



I have seen some states of C. ericetorum, which I have hardly known 

 from this. This is more or less green. 



9. C. capillaris, filaments very long simple flexuose loosely en- 

 tangled, articulations nearly twice as long as they are broad, 

 when dry alternately contracted. Ag. p. 81. E.B.t. 2364 

 (excluding the branching plant). 



HAB. Marshy ditches and stagnant waters near the sea-side, Lighff. 

 Rather stout, rigid. 



10. C. vesicata, " variegated with brown and green, filaments 

 unbranched slender, articulations half as long again as broad, 

 alternately pellucid and opaque here and there swelling/' Sm. 

 Ag. p. 82. Conf. alternata, E. B. t. 2304. Dillw. Conf. 

 Syn. t. B. 



HAB. Ditches and stagnant waters, frequent. Pond at Dalbeth, 

 abundant, Hopk. 



11. C. tumtdula, "green, filaments unbranched, articulations 

 thrice as long as broad, when fertile swelling and elliptical." 

 Sm. E. B. t. 1670 (excluding the synonym of Vouch.}. 



HAB. Ditches and bogs with Zygnema iriflata, but not common, Hopk. 



12. C. riv?ilaris 9 filaments simple capillary very long equal, 

 joints pellucid, articulations granuliferous about twice as long 

 as they are broad. Dillw. Conf. t. 39. E. B. t. 1654. 

 Lightf. p. 97 5. C. rivularis, y. Ag.p.37. 



HAB. Brooks and rivers, frequent, Light/., Hopk. 



Agardh considers the C. crispata, Dillw. t. 93, a var. of this. 



**## Branched, green, aquatic. 



13. C. fracta, filaments rigid very much branched capillary, 

 branches divaricated alternate, articulations 4 5 times as 

 long as they are broad. Ag. p. 88. Dillw. Conf. i. 14. 

 E. B. t. 2338. C. lullosa, Lightf. p. 977. 



HAB. Stagnant waters, common, Light/., Hopk. 

 Conf. Jlexuosa of Dillw. and E. B. is made the var. {3. proli/era of 

 Agardh. 



14. C. glomerata, filaments very much branched capillary, 

 branches alternate, the ultimate ones fastigiate subsecund, ar- 

 ticulations cylindrical about four times as long as broad. Ag. 

 p. 89. Lightf. p. 993. Dillw. Conf. t. 13. E. B. *. 2192. 

 C. Icete-virens, Dillw. Conf. t. 48. E. B. t. 1854. Conf. 

 allida, E. B. t. 2327 ? 



HAB. In pools and ditches, and in the sea, most abundant. 



15. C. lanosa, yellowish green, filaments slender very much 

 branched rather short, branches remote alternate, articulations 

 below about twice, the ultimate ones thrice, as long as they are 

 broad. Dillw. SuppL t. E. E. B. t. 2099. C. &rugi- 

 nosa? Lightf. p. 980. 



