298 CHARACE^ INDICE ORIENTALIS 



afterwards, that there is no essential différence between the East Tndian 

 and American variety. The form with naked leaves from Busna can 

 not be regarded as a peculiar variety, since tliere are sometimes in the 

 same spécimen covered and uncovered leaves. The length of the seed- 

 nut is in the East Indian variety 3 ^% 6 ; in the American 3 -f^° ni. 

 b, Charœ diplostephanœ. 



y, corticatce dlplosticha. 

 9. Ch.fœtida. 



A. Br. in Regensb. bot. Zeit. 1835. p. 63. 

 Ch. vulgaris, Engl. Bot. ; Wallr. ; Agard et c. {non Lin) 

 Of this most common a#d widely dispersed of ail species, I fonnd, in 

 SirW. Hooker's herbarium, a spécimen collected by Dr. Wallich in Népal, 

 d, corticata triplostichœ . 

 * phlœopodes. 

 10. Ch. brachgpus, monoica, tenuiter incrustata, fragilis ; canle seriebus 

 tabnlorum numéro foliorum triplis corticato, aculeis minutis acutis 

 sparsis armato ; foliis verticillorum 10-12, articulis 8-10, prœter 

 nltimuni mncroniforme omnibus corticatis ; infimo sequentibus 

 triplo breviore et subhyalino ; foliolis in geniculis fertilibus uni- 

 lateralibus (posterioribus nempe abortu minimis et inconspicuis) an- 

 gustissimus, semina longitudine non aut vix œquantibus, in geniculis 

 supeiïoiïbus (abortu) omnino deficientibus ; stipulis coronam dupli- 

 cem formantibus, seriei superioris elongatis foliorum articulum in- 

 fimum tegentibus, seriei inferioris abbreviatis et cauli retrorsum 

 adpressis ; seminibus ovalibus ; coronula brevi erecta, fasciis 12-13. 



Ch. setosa, Klein ap. Willd. in Act. Acad. Berol. 1801-2, p. 58. {ex parte) t. I. 

 f. 1. {maie) et Sp.pl. 4. p. 184. 



Var. /3. gracilescens, aculeis inconspicuis ; foliis verticillorum 8-9 ; sti- 

 pulis articulum foliorum infimum subcoloratum non omnino tegen- 

 tibus ; seminibus minoribus. 



Tra?iquebar (Klein, 1799 in herb. Willd.) ; Madras (Graîiam in herb. 

 Agardh, Br. Wight, No. 130 and 132 in herb. Hook.) The variety 

 was collected near Madras by Dr. Wight (No. 134 in herb. Hook.) 



The normal form is peculiar to the East Indies ; but a variety, almost 

 entirely agreeing with the var. /3 gracilescens, is also a native of Egypt 

 and Cordofan. In size and colour this species resembles much Ch. 

 fragilis Desv. (pulchella, Wallr.), differing, however, from it by very 

 important characters ; among which the shortness of the first joint of 

 the leaves, which is unco/^red and hidden beneath the stipulas, is the 



