characej:. 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. 



Baling, in Ann. Nat Hist. 1850, Vol. V. p. 90 ; and Man. ed. 8, p. 472. TT T «///,;. 



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



32; and Monog. Sver. Norg. Char. p. 35. LeonJiardi in Brunn Verkandl. Vol. II. 



p. 204. B. & J. Groves in Journ. Bot. 1880, p. 129, t. 207, f. 4. Mutter 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. Rorneman, Fl. Danica, t. 1940. Bupr. in Beitr. 



zur Pflanz. des Russ. Keich. 1845, dritte liefer, p. 17. Nordst. in Anderss. Bot. 



Notiser, 1863, p. 44. 

 C. intertexta, Desv. in Loisel. Deslongeh. Notice sur les PI. a aj outer a la Fl. de France, 



p. 138. 

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

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



galioides, De Condolle). 

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



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



267-268. Kutz. Phyc. Germ. p. 259. Walhn. in Kongl. Vet. Akad. Handl. Stockh. 



1854, p. 312. Midler in Bull. Soc. Bot. Geneve, 1881, p. 89. Sydow, Em-op. 



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



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

 C. equisetifolia (Nolte), Kutz. in Flora, 1834, Vol. II. p. 705. 

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

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



Monog. Char. p. 177. 

 " C. corallina, Walhn. 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 1 1 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 aj3ex. Bracts in the female plant 



2 e 2 



