char ace,*:. 199 



Monatsber. Akad. Wissensch. 1867, p. 901 ; and Fragm. Monog. Char. p. 137, t. vii. 



f. 221-2. Kiitz. Phyc. Gener. p. 320 ; Phyc. Germ. p. 259 ; Sp. Alg. p. 525 ; and 



Tab. Phyc. Vol. VII. p. 27, t. 69, f. i. Bupr. in Beitr. zur Pflanz. Euss. Eeich. 



1845, dritte liefer, p. 18. Ganterer, Ooterr. Char. p. 14, t. ii. f. viii. Babing. in 



Ann. Nat. Hist. 1850, Vol. V. p. 88 ; and Man. ed. 8, p. 471. Wallm. in Kongl. 



Vet. Akad. Handl. Stockh. 1854, p. 319. Wahid. Bidr. Skand. Char. p. 31; and 



Monog. Sver. Norg. Char. p. 25. Nordst. in Anderss. Bot. Notiser, 1863, p. 41. 



Crepin in Bull. Soc. Bot. Bolg. Vol. II. p. 126. Leonhardi in Brunn Verhandl. 



Vol. II. p. 180. Lange, Fl. Danica, t. 2747. Sydow, Europ. Char. p. 52. Allen, 



Char. Amer. p. 5, pi. ii. ; and Bull. Torrey But. Club, Vol. IX. p. 40, pi. xviii. 

 C. hispida, var. crinita, Wahlenb. Fl. Suec. p. 717. 

 C. Karelini, Lessing in Linntea, Vol. IX. p. 213. Wallm. in Kongl. Vet. Akad. Handl. 



Stockh. 1854, p. 322. Kiitz. Tab. Phyc. Vol. VII. p. 28, t. 71, f. ii. 

 C. condensata, Wallm. in Kongl. Vet. Akad. Handl. Stockh. 1854, p. 320 ; not of Rupr. 

 C. pusilla (Dethard), Kiitz. in Flora, 1834, Vol. II. p. 706 ; Phyc. Gener. p. 320. 



Kiitz. Phyc. Germ. p. 260 ; (Floerhe) Kiitz. Sp. Alg. p. 526 ; and Tab. Phyc. Vol. 



VII. p. 28, t. 69, f. ii. 

 C. canescens, H. & J. Groves, in Journ. Bot. 1880, p. 134, t. 208, f. 9 ; scarcely of LoiseL 



Deslong* 

 C. evoluta, Allen in Bull. Torrey Bot. Club, Vol. IX. p. 41, pi. xix. 

 C. altaica, A. Br. Fragm. Monog. Char. p. 148, t. vii., f. 228-231. 



Dioecious [or rarely monoecious]. Dark green. Stem slender, trans- 

 lucent, or opaque from being encrusted with carbonate of lime, rather 

 faintly spirally striate from being coated with as many cortical cells 

 as there are branchlets in the whorl, and with numerous (usually very 

 numerous) spreading or spreading-retrorse fasciculated long setaceous 

 spines ; stipule-cells in two whorls, all are setaceous and spine-like. 

 Branchlets 8 to 10 in a whorl (mostly 5, Braun), short, slender, often 

 incurved, 4- to 8-jointed (mostly 5-jointed, Braun), clothed with 

 cortical cells, except 1 or 2 joints at the apex. Bracts 7 to 11 in a 

 whorl, at all the nodes of the branches, except sometimes the last 1 or 

 2, spreading-ascending, spine-like, mostly all longer than the nucules, 

 usually twice as long [or the innermost bracts very much shorter than 

 the nucules]. Nucules in the axils of the bracts at 2 or 3 or rarely 4 

 of the lowest nodes of the branch, oblong-oval, 10- to 13-striate, 

 with a conspicuous erect persistent crown. Globules on separate 

 plants from those bearing nucules, very rarely produced. 



In pools of brackish water, very rare. Budock Pool, near 

 Falmouth", Cornwall, Rev. W. L. P. Garnons.f Here it grows in 



[* According to specimen named by Desveaux, in the Kew Herbarium, which is 

 probably authentic, C. canescens Loisel. Deslong. is G. aspera, Willd.] 



[f By Professor Babington this locality is incorrectly spelt Burdock Pool in Ann. 

 Nat. Hist, and in Man. Brit. Bot. cd. 8.] 



