CHARACE.E. 193 



GENUS II— C H A R A. Agardh. 



Internodes of the stem subopaque (rarely pellucid), usually with a 

 covering of slender parallel cortical cells [rarely naked], and gene- 

 rally furnished with one or two whorls of stipule-cells below each 

 whorl of branchlets. Nucule with a crown of five erect or spreading 

 cells in one row, persistent. 



Section L— LYCHNOTHAMNUS. Euprecht. 



Internodes of the stem naked, without a covering of parallel cells, 

 but with a whorl of long stipule-cells at the base of each whorl of 

 branchlets. Globule by the side of the nucule, within the bracts. 

 Nucule with a crown of 5 minute cells. 



SPECIES I.— CHAR A ALOPECUROIDEA. " Delile," A. Braun* 



Plate 1909. 



Braun, Babenh. & Stiz. Char. Europ. Exsicc. Nos. 62, 63, 81. 



Nordst. & Waldst. Char. Scand. Exsicc. Nos. 20, 21, 21b, 22a, 22b. 



Chara alopeciiroidea (Delile, Herb.) and vars. A. Braun, Scbweiz. Char. p. 13. Kiitz. 



Sp. Alg. p. 518 ; and Tab. Phyc. Vol. VII. p. 18, t. 45, f. ii. 

 C. alopecuroides, Wallm. in Kongl. Vet. Akad. Handl. Stockh. 1854, p. 281 ; A. Braun, 



Consp. Char. Europ. p. 3 ; and in Monatsbericht Akad. Wissensch. Berlin, 1867, 



pp. 798 and 896. Babing. in Journ. Bot. 1863, p. 193, t. 7 ; and Man. ed. 8, 



p. 470. Lange, Fl. Danica, t. 2745. 

 C. intricate, Agardh, Syst. Alg. p. 125, (partly, — as to the plant from the Baltic Sea, 



according to an authentic specimen from Agardh, in the Kew Herbarium !) 

 C. papulosa, Wallr. Flor. Crypt. Germ. ii. p. 107. 

 C. Pouzolsii, (Gay, Herb.) A. Braun in Flora 1835, Vol. I. p. 58. 

 C. Wallrothii, Bupr. in Beitr. zur Pflanz. des Euss. Eeich. 1845, dritte liefer, p. 12. 



Nordst. in Anderss. Bot. Notiser, 1863, p. 41. 

 Lychnothamnus Wallrothii, Waldst. Monog. Sver. Norg. Char. p. 23. 

 Lychnothamnus alopecuroides, H. & J. Groves in Journ. Bot. 1880, p. 161, t. 209, f. 10. 

 Lamprothamnus alopecuroides, A. Braun, Fragm. Monog. Char. p. 100, t. vi. f. 185-188. 



Sydow, Europ. Char. p. 41. 



[* The name C. alopecuroidea is so generally used for this plant, that there is perhaps 

 littlo use in changing it now ; but its oldest published name, and that which according 

 to the laws of botanical nomenclature should be adopted for it under Chara, is G. 

 papulosa, Wallr. published in 1833 ; the next oldest is C. Pouzolsii (Gay Herb.), pub- 

 lished by Braun in 1835, and why he should have changed it in 1847 to C. alopecu- 

 roidea, does not appear, for according to the type specimens, Gay's MSS. name was 

 given in 1822, and Delile's in 1827, so that even on the ground of manuscript priority 

 (which cannot be admitted) there was no reason for the change. — N. E. B.] 



VOL. XII. . 2 c 



