CHARA VULGAEIS. 25 



C. striata KiJTZiNG in Ploi-a, XVII, i, p. 707 (1834) ; Tab. Phyc. VII, 



t. 59, f. 1 (1857). 

 C.foetida II. subhispida,!. macroptila Beattn in Monatsb. Akad. Berl. 



for 1867, p. 912 (1868). 

 C. fostida subsp. subhispida Braun & Noedstbdt, Pragm. Mon. 



Charac. p. 167 (1882). 



ExsiccATA :— Groves 15 ; Migula, Sydow & WaMst. 17 ; Nordstedt 

 & Walilst. 95. 



Stem stout. Cortex irregular. Secondary cortical- 

 cells much thicker than the primary. Spine-cells con- 

 spicuously long and more or less spreading, deciduous. 

 Branchlets long or of medium length. Bract-cells rather 

 long. 



A large somewhat lax and untidy-looking plant, usually much 

 incrusted. 



Var. d. refracta. 

 (Plate XXIX, pig. 1.) 



C. refracta Kdtzing in Flora, XVII, i, p. 707 (1834) ; Tab. Phyc. VII, 



t. 58, f. 2 (1857). 

 C.foetida var. refracta Wahlstbdt Bidr. Stand. Charac. p. 13 (1862). 

 C.foetida II. subhispida, 1. microptila Beaitn in Monatsb. Akad. Berl. 



for 1867, p. 912 (1868). 



Exsicc ATA .—Billot 3274; Groves 16; Nordstedt & Wahlst. 93, 96 ; 

 Rabenhorst 440 ; Gr. & B.-W. 8. 



Stem moderately stout. Spine-cells well-developed, 

 but shorter than in the preceding. Branchlets short, 

 often somewhat reflexed at the joints, the ultimate 

 segments much abbreviated. Bract-cells short. 



A conspicuously neat plant, usually but little incrusted, 

 fruiting very freely, sometimes at 5 nodes of the branchlets. 



Var. e. crassicaulis. 



Kdtzing Sp. Alg. p. 523 (1849). 



(Plate XXIX, f:g. 4.) 



C. fostida var. crassicaidis Braun in Ann. sc. Nat. ser. 2, I, p. 355 



(1834) ; in Flora, XVIII, i, p. 64 (1835). 

 C. longibracteata var. crassicaulis Wallman Forsok Syst. Oharac. p. 8 



(1853) ; Transl. p. 65 (1856). 



