CHARA DESMACANTHA. 57 



recurved at the top. Moniliform states, with elongated inter- 

 nodes and short incurved branchlets with rather fewer segments, 

 have been found in several locahties, the most extreme form 

 being that from Cunswick Tarn, collected by Mr. C. H. Waddell, 

 the branchlets of which have about five segments. A small con- 

 densed form, approaching in appearance C. aspera var. lacustris. 

 was found by Mr. Lloyd Praeger in L. Melvin, Co. Leitrim, 

 A form was collected by Mr. R. A. Phillips at Dromineer, Co. 

 Tipperary, in which the secondary cortical series is only partially 

 developed. In weak forms solitary spine-cells are more numerous. 



[C. galioides D.C., a triplostichous (isosticlious) 

 monoecious species with a firmer and stouter stem tlian 

 C. aspera, stouter usually strongly incurved branchlets, 

 well-developed stout patent spine-cells and very large 

 antheridia (h> IJLOO (x diam.), is typically a plant of 

 S. Europe and N. Africa, but is also reported from 

 Schleswig-Holstein. ] 



13. Chara connivens Braun. 

 (Plate XLI.) 



Chara connivens Braun in Flora, XVIII, i, p. 73 (1835) ; in Monatsb. 



Akad. Berl. for 1867, p. 927 (1868). 

 Wallman Forsok syst. Charao. p. 99 (1853) ; Transl. p. 82 (1856). 

 KuTziNG Sp. Alg. p. 521 (1849) ; Tab. Phyc. VII, t. 63, f. 1 (1857). 

 Beebisson PL Normand. ed. 3, p. 381 (1859). 



Ohaboisseatj in Bull. Soc. Bot. Prance, XVIII, p. 149, t. 1 (1871). 

 Groves in Joum. Bot. XVI, p. 120 (1878) ; XVIII, p. 103, t. 207, f . 3 



(]880). 

 Lloyd & Poucatjd PI. de I'Ouest Fr. Ed. 4, p. 438 (1886). 

 Bbatjn & NoRDSTEDT Fragm. Mon. Charac. p. 180 (1882). 

 Sydow Europ. Charac. p. 89 (1882). 

 OossoN & Germain Atl. PI. Par. ed. 2, t. 43 (1882). 

 MiGULA Die Oharaceen, p. 703, f. 142-3 (1897) ; Krypt. PL Deutsch. 



II, ii, p. 353, t. 77, f . 3 (1907) ; Syn. Charac. Europ. p. 152, f . 127-8 



(1898). 

 Prosper Carofit. de Espaii. p. 158, f. 26b (1910). 

 Hy in Bull. Soc. Bot. Prance, LX, Mem. 26, p. 41 (1913). 

 C. fragilis var. ? connivens Boswbli. Engl. Bot. ed. 3. p. 215, t. 1921 



(1885). 



ExsiccATA : — Groves 7 ; Kralik (PL Tunetanse) 344 and 344 his ; 

 Migula, Syd. & Wahlst. 23 ; Gr. & B.-W. 19. 



Dioecious. Stem slender, rather rigid. Not known 

 to produce bulbils. Cortex evenly triplostichous, the 



