540 103. CHARACEJS. 



11. N.prolifera (Kiitz.) ; st. stout, sterile branchlets 6 20 

 simple acute 3 5-jointed, fertile branchlets many densely 

 crowded divided into 3 4 acute 2 4- jointed divisions, glo- 

 bules sessile (?) with one or more nucules of 9 or 10 spires. A 

 very large plant. Branchlets even 7 inches long and very 

 stout. Canals and ditches, rare. E. I. 



12. N. wtricdta (A. Br. !) ; st. stout, sterile branchlets 610 

 once or twice divided acvte, fertile branchlets many densely 

 crowded divided once or twice into 4 5-celled acute 'divisions, 

 globules stalked with one or more nucules of 8 9 spires. 

 Known by its divided sterile branchlets. Ponds and ditches. 

 A. IV. V. E. I. 



2. CHA'RA Linn. 



* Stem composed of a single tube. 



A. Stipulodes rudimentary, in one ring. Dioecious. 



1. C. obtusa (Desv.) ; st; thick equal transparent its lower 

 subterranean branches bearing white starlike knob?, branchlets 

 4 (3 of 2 or 3 long joints bearing 1 or 2 unequal 1 -jointed 

 bracts, stipulodes exceedingly small, nucules with 9 spires sub- 

 globose. J. of E. xix. t. 216. C. stelligera (Bauer) ed. viii- 

 Lychnothanmus stelliger (Braun). Very large, resembling 

 N. franshfcens. Nucules with very thick spires and very small 

 crown. Filby and other Broads, Norf. Devon. Hants. Surrey. 

 VIII. K 



B. Stipulodes long, in one ring. Mono3cious. 



[f Globules above the nucules. Lamprothamnus.] 



2. C. alopecuroides (Del.) ; st. [sometimes] opaque, 3 5 

 jointed branchlets 6 8 in a whorl their terminal joints much 

 the shortest and forming an acute point, stipulodes [opposite the 

 branchl.] needleshaped, bracts 5 or 6 at each node equal exceed- 

 ing the oval nucule of 10 12 spires. J. of B. i. t. 7. Dark 

 green. 4 8 in. high. Not incrusted. In brine-pits at Newtown, 

 Isle of Wight. Dorset. A. VIII. E, 



ft [Nucules above the globules.] 



[C. Braun'ii (Grnel.) ; st. much branched, 4 5-jointed branchlets 

 6 8 in a whorl, stipulodes alternating with the branchlets, bracts 5 7 

 usually shorter than the ovate nucules. J. of B. xxii. (1884) p. 1, t.242. 

 Often annularly incrusted, 6 12 in. high. Canal, Reddish, Lane., 

 doubtless introduced.] E. 



