CHARACE^. 211 



42, f. d. Kiitz. Phyc. Gener. p. 320 ; Phyc. Germ. p. 257 ; Sp. Alg. p. 521 ; and 



Tab. Phyc. Vol. VII. p. 21, t. 51, f. ii. and t. 52. Ganterer, Osterr. Char. p. 15. 



Babing. in Ann. Nat. Hist. 1850, Vol. V. p. 90 ; and Man. ed. 8, p. 472. Wallm. 



in Kongl. Vet. Akad. Handl. Stockh. 1854, p. 322. Walilst. Bidr. Skand. Char. p. 



32 ; and Monog. Sver. Norg. Char. p. 35. Leonhardi in Brunn Verhandl. Vol. II. 



p. 204. H. & J. Groves in Journ. Bot. 1880, p. 129, t. 207, f. 4. Miiller in Bull. 



Soc. Bot. Geneve, 1881, p. 87. Allen in Bull. Torrey Bot. Club, Vol. IX. p. 43, 



pi. xxi. Sydow, Europ. Char. p. 85. 

 C. hispida, Linn. Sp. PI. ed. i. p. 1156. Horneman, Fl. Danica, t. 1940. Bujpr. in Beitr. 



zur Pflanz. des Euss. Reich. 1845, dritte liefer, p. 17. Nordst. in Anderss. Bot. 



Notiser, 1863, p. 44. 

 C. intertexta, Desv. in Loisel. Deslongch. Notice sur les PI. a ajouter a, la Fl. de France, 



p. 138. 

 C. canescens, Loisel. Deslongch. Notice, &c. p. 139. 

 C. galioides, and C. fallax, Agardh, Syst. Alg. Introd. pp. xxvii. and xxviii. (not C. 



galioicles, De Candolle). 

 C. tenuispina, A. Braun in Flora, 1835, Vol. I. p. 68 ; Consp. Char. Europ. p. 7; in 



Cohn, Krypt. Fl. Schles. Vol. I. p. 409 ; and Fragni. Monog. Char. p. 181, t. vii. f. 



267-268. Kiitz. Phyc. Germ. p. 259. Wallm. in Kongl. Vet. Akad. Handl. Stockh. 



1854, p. 312. Miiller in Bull. Soc. Bot. Geneve, 1881, p. 89. Sydow, Europ. 



Char. p. 92. C. tenuissima, A. Braun in Ann. Sciences Nat. 2nd ser. Vol. I. 



p. 355 (not of Desv.) is probably a misprint for C. tenuispina. 

 C. eguisetifolia (Nolte), Kiitz. in Flora, 1834, Vol. II. p. 705. 

 C. hirta, Meyen, in Linnsea, Vol. II. p. 78. 

 C. curta (Nolte), Kiitz. Tab. Phyc. Vol. VII. p. 22, t. 53, f. i. A. Braun, Fragm. 



Monog. Char. p. 177. 

 " C. corallina, Wallm. in Liljeblad, Svensk. Fl. ed. 3 " (Wallman). 



Dioecious, [rarely monoecious]. Pale pea-green, or often greenish- 

 grey or greenish-white, from being encrusted with carbonate of lime. 

 Stem slender or very slender, rather brittle, translucent or opaque, 

 when encrusted faintly striate, clothed with three times as many 

 cortical cells as there are branchlets in a whorl, with numerous or few, 

 scattered or fasciculate, spreading or retrorse, setaceous, acute, 

 subpersistent spine-cells, situated on the primary cortical cells, 

 especially in the upper part of the stem, but the spine-cells sometimes 

 reduced to papillae throughout, or at least on the lower part of the 

 stem ; subterranean part of the stem generally producing at the nodes 

 2 or 3, rarely 4, smooth, globose, 1-celled bulbils; stipule-cells in 

 2 whorls resembling the spine-cells, being very conspicuous when 

 these are long, and papilliform when the latter are short or few. 

 Branchlets 6 to 11 in a whorl, mostly 8, short, very slender, ascending 

 or slightly incurved, 5- to 9-jointed ; their joints clothed with cortical 

 cells, except the minute mucro-like apical cell, which is naked and 

 sometimes also the second from the apex. Bracts in the female plant 



2 e 2 



