N1TELLA. 539 



their terminal segments 2- or 3-celled strongly mucronate, 

 nucules and globules each solitary but together at the forking 

 of the brauchlets. E. E. 2140. Ail. FL Par. 41. Very small 

 and slender. Nucules subglobose with 6 or 7 spires. St. 

 Leonard's Forest, Suss. Salop. Glen Cullen, Co. Dublin. 

 Vucklow. A. IX. K 1. 



7. N. tennis sima (Kiitz.) ; st. equal flexible transparent, 

 branchlets in very dense compact subglubose whorls twice or thrice 

 equally forked in 3 6 segments of 2 or 3 cells their terminal 

 cell very slender and acute, nucules and globules each solitary but 

 together at the forkings of the branchlets. Atl. Fl. Par. 41. 

 Very small and slender with long internodes, 1 4 [ 12] in. 

 high, usually dark green. IRwnchlets for mint/ little globose com- 

 pact masses, often much incrusted. Nucules globose with 

 9 spires, minute bnt much exceeding the diameter of the 

 brauchlets ; globules much larger. Peaty ditches in Fens of 

 a mb rid gesliire Norfolk, and Anglesea. Westmeath. Galway. 

 A. VIZI." E.I. 



8. N. confervacea (Braun) ; st. very slender equal flexible transparent, 

 branchlets 8 in loose subglobose whorls, twice or rarely 3 times forked 

 in 3 5 segments, ultimate segm. very acute, globules and nucules each 

 solitary but together at the first forking of the branchlets with 7 spires, 

 nucules ovate with prominent spires, surface minutely and irregularly 

 warty J. ofB. xxviii. (1890) p. 65, t. 296. N. batrachosperma (Braun, 

 not Ag.). N. Nordstedtiana (H. & J.G.). Very small. Branchlets less 

 compound and not so slender as in sp. 7, and the internodes shorter. 

 Obbe, I. of Hams. Killarney and Caragh Lakes. VII. VIII. S. I. 



9. N. hyalina (Ag.) ; st. flexible transparent, whorls loose subglobose 

 of 8 primary and about double as many smaller secondary branchlets, 

 primary 2 3 times forked with 7 10 rays at the first forking, second- 

 ary 1 2ce divided or a few simple, nucules ovoid showing 9 10 spires. 

 >. ofB. xxxvi. (1898) p. 409, t. 392. About 618 in. high, dark green. 

 At once distinguished from all the other sp. by the presence of secondary 

 branchlets. The Loe, West Cornwall. Rev. G. R. Bullock Webster. 

 VIII. E. 



** Glolules lateral on the forkings of the branchlets, amongst the 

 nucitks. Segments unequal. Monoecious. TOLYPKLLA Leonh. 



10. N. glomerdta (Chevall.) ; st. stoutish, sterile branchlets 

 6]2 simple blunt 3 5-jointed, fertile branchlets many densely 

 crowded once unequally 3 4-forked with blunt 2 5- jointed 

 divisions, globules usually stalked with one or more nuculos of 

 8 or 9 faint spires. Atl. Fl. Par. 41. Much incrusted and 

 brittle. Brackish ponds and ditches chiefly. A. IV. E. 1. 



