CHAR A. 11 



and antheridium in the monoecious species arising from 

 the same peripheral cell of the branchlet-node, the 

 oogonium normally above the antheridium. 



The parent genus of the group first discriminated in 1719 by 

 Vaillant, to whom we are indebted for the name. As now 

 restricted the genus is apparently quite a natural one ; it com- 

 prises about 80 species, and is distributed throughout the world. 

 The distinguishing character is found in the relative position 

 of the gametangia, the oogonium being normally always situated 

 above the antheridium. In by far the larger number of species 

 the stem and branchlets possess a cortex. The varying degrees 

 of complexity of this supply a secondary character for purposes 

 of classification. The stipulodes being in a single or double row 

 affords the basis for the main divisions of the genus. In some 

 species these organs are quite rudimentary. 



Section I. HAPLOSTEFHANM Braun 'Consp. Char. 

 Europ.' p. 4, 1867 {Stenartrese Ganterer ; Sect. Cha- 

 ropsis, Leonhardi). 



Circle of stipulodes in a single row. 



1. Chara Braunii Gmelin. 

 (Plate XXVI.) 



Chara translucens minor flexilis Cokti Osserv. Microsc. p. 133, t. 3 



(1774). 

 C. Braunii Gmelin PL Bad. Alsat. IV (suppL), p. 646 (1826). 

 BiscHOFP Kiypt. Gewiichse, p. 26, t.l, f. 5 (1828). 

 Wallmann rsrsok Syst. Charac. p. 58 (1853) ; TransL p. 49 (1856). 

 NoBDSTBDT in Bot. Notiser for 1863, p. 41. 

 Wahlstbdt Mon. Sver. & Norg. Charac. p. 24 (1875). 

 Geovbs in Journ. Bot. XXII, p. 3, t. 242 (1884) ; in Babington Man. 



Brit. Bot. ed. 9, p. 540 (1904). 

 BoswELL EngL Bot. ed. 3, XII, p. 197, t. 1911 (1885). 

 C.flexilis Amici in Mem. Soc. ItaL (Modena) ii, p. 247, t. 10, f. 12-15 



(1823), non Linn. 

 C. Cortiana Bbetoloni in Amici in Mem. Acad. Modena, I, p. 204 



(1827) ; FL ItaL X, p. 16 (1854). 

 C. coronata BisCHOPr Krypt. Gewiichse, t. 1, f. 7 (1828) ; Handb. bot. 

 term. & syst. II, t. 57, f. 2817 (1842). 

 Bkatjn in Ann. sc. Nat. ser. 2, I, p. 353 (1834) ; in Flora, XVIII, i, 

 p. 59 (1835) ; Consp. Oharac. Europ. p. 4 (1867) ; in Monatsb. 

 Akad. BerL for 1867, p. 897 (1868); in Cohn, Kryp. PL Schles. 

 p. 403 (1877). 



