40 BRITISH CHAROPHYTA. 



Var. b. hispidula. 



Braun in N. Denks. Sohweiz. Ges. Naturw. X, p. 16 (1849). 



(Fig. 9.) 



BxsiccATA: — Braun, Rabenh. & Stiz. 89, 90; Migula, Sydow & 

 Wahlat. 15, 61, 90 ; Nordstedt & WaUst. 76, 77. 



Stem and branchlets ratlier stout. Spine-cells well 

 developed, once to twice as long as the diameter of the 

 stem, spreading. Stipulodes and bract-cells long. 



We have seen specimens of this variety from — 



England : Berks, Cheshire, Lanes, S. 



Scotland : Fife, E., Orkney. 



Ireland: Queen's Co., Galway, W., Westmeath, 

 Mayo, E., Donegal. 



This variety exhibits a marked contrast to the slender 

 neat form, at the other end of the series, with very incon- 

 spicuous spine-cells, but intermediate states occur. 



8. Chara denudata Braun. 

 (Plate XXXIV.) 



Chara denudata BKA.TJN in N. Denks. Sohweiz. Ges. Nat. X, p. 5 

 (1849). 

 G-EOVES in Journ. Bot. XXXIII, p. 290, t. 350 (1895). 

 C. dissoluta Lbonhaedi in Verb. Naturf. Yer. Brunn, II, pp. 161, 182 

 (1864). 

 Beatjn in Monatsb. Berl. Akad. for 1867, p. 903 (1868). 

 Sydow Enrop. Cbarac. p. 55 (1882). 

 MiGlTLA Die Cbaraceen, p. 378, f. 91 (1891) ; Syn. Oharao. Eiu-op. 



p. 86, f. 76 (1898). 

 Sluitbb in Bot. Zeit. LXVIII, p. 125, t. 4 (part) -7, and text-figs. 

 10-14, (1910). 

 C. contraria subsp. -dissoluta Beatjn & Noedstbdt Fragm. Mon. 



Charac. p. 145, t. 7, f. 224 (1882). 

 C. contraria var. denudata Geovbs in Babington Man. Brit. Bot. 

 ed. 9, p. 541 (1904). 



Monoecious. Stem rather slender, weak. Cortex rudi- 

 mentary, consisting of single cells only, but little longer 

 than the stipulodes, or partially developed and very 

 imperfectly diplostichous ; spine-cells, when present, 

 solitary, short, spreading, or papilliform. Whorls of 



