18G ENGLISH BOTANY. 



whorls sterile, of 3 to 5 cells, obtuse, unbranched ; fertile whorls ter- 

 minating the stems, and primary and secondary branches, forming 

 rather large, oblong-ovoid or oval-ovoid heads consisting of the nume- 

 rous branchlets and incurved bracts ; branchlets 3- to 5-celled, obtuse, 

 bearing at the first node 3 or 4 lateral bracts, each bract of 3 or 4 

 cells, obtuse, similar to the terminal portion of the branchlet, but 

 shorter and incurved over the nucules and globule. Nucules 2 to 5 

 together, at the nodes of the fertile branchlets, between the bracts, 

 oval-ovoid, 8- to 9-striate, with a minute deciduous crown. Grlobules 

 solitary, lateral on the inner side of the fertile branches between the 

 bracts, surrounded by the nucules. 



Var. a. genuina. 

 Plate 1905. 



Braun, Ralenh. & Stiz. Char. Enrop. Exsicc. No. 17 partly. Nordst. & Wahht. Char. 



Scand. Exsicc. Nos. 43, 44, 45. 

 Nitella glomerata, Chevallier, Fl. Gen. ed. 2, Vol. II. p. 124. Coss. & Germ. Fl. Envir. 



Par. ed. i. p. 681 ; and Atlas pi. 41, f. h, excluding description under explanation 



of plate ; ed. 2, p. 893. Kiitz. Sp. Alg. p. 517. Wallm. in Kongl. Vet. Akad. 



Handl. Stockh. 1854, p. 270. A. Braun, Consp. Char. Europ. p. 3. Crepin in 



Bull. Soc. Bot. Belg. Vol. II. p. 130. Fl. Danica, t. 2800. Baling. Man. ed. 8, 



p. 470. 

 N. glomerulifera, Wallm. in Kongl. Vet. Akad. Handl. Stockh. 1854, p. 270. Kiitz. 



Tab. Phyc. Vol. VII. p. 32, t. 81, f. ii. Not of A. Braun. 

 N. flexilis, var. glomerulifera, Kiitz. Sp. Alg. p. 514. 

 Tolypella glomerata. Leonh. in " Lotos, 1863, p. 129 ; " and in Brunn, Verhandl. Vol. II. 



p. 176. Waldst. Monog. Sver. Norg. Char. p. 22. H. & J. Groves in Journ. of 



Bot. 1880, p. 162, t. 209, f. 11. A. Braun, Fragm. Monog. Char. p. 95. Sydoio, 



Europ. Char. p. 35. 

 Chara glomerata, Desv. in Loisel. Deslong. Notice, p. 135. A. Braun in Flora, 1835, 



Vol. I. p. 55. BaJcer in Beport of London Bot. Exchange Club for 1867, p. 16 ; 



and in Journ. Bot. 1868, p. 73. 

 C. glomerulifera, Rupr. in Beitr. zur Pfianz. des Buss. Eeich. 1845, dritte liefer, p. 9. 

 C. prolifera, Baling, in Ann. Nat. Hist. ser. ii. Vol. V. 1850, p. 87. Not of A. Braun. 



Monoecious. 



Var. /3. Smithii. 



Plate 1906. 



Nitella Smithii, Wallm. in Kongl. Vet. Akad. Handl. Stockh. 1854, p. 271. 



Chara Smithii, Baling, in Ann. Nat. Hist. ser. ii. Vol. V. 1850, p. 86. 



C. nidifica, Sm. Engl. Bot. ed. i. No. 1703, principal figure. Not of Roth. 



Dioecious ? Only the male plant known. 



In pools and ditches, particularly in brackish water, rare. 



