INDEX. 



ADDENDA, . . . . . 171 

 ALG^E Characteristics of, . xi 

 Color of, .... xii 

 Fresh- Water How to find, 



collect and preserve, . . xiii 

 Signification of term,. . xi 



Uses of, xii 



Varieties of, . . . xii 



ARTHRODESMUS, Ehrb., . . 103 

 " convergens (Ehrb.), Ralfs, K'3 



" fragilis, Wolle, . . 103 



" incus (Ehrb.). Hass., . 104 



" incrassatns, Lagh., . . 105 

 Var. cycladatue, Lagh., 105 



" notochondrus, Lagh., . 105 



" orbicular!?, Wolle, . 104 



" octocornis, Ehrb., . .104 



" ovalis, Wolle, . . 103 



" pachycerous, Lagh., . 105 



" quadridens, Wood, . 104 



Rauii, Wolle, . . .103 



" subulatus, Kg., . .104 



" triangulari.s, Lagh., . . 105 



AUTHORS AND BOOKS Names of, viii 



BAMBUPINA, Kg. Characteristics 



of, 24 



" Brebissonii. Kg., . . 24 j 



Var.gracilescens,Nord., 'J5 

 " gracilscens, Nprd , . .25 

 " delicatissima, Wolle, . 25 



CALOCYLINDRUS. D. By. Descrip- 

 tion of, .... 58 

 ' Clevei, Wolle, . . 60 

 " connatus, (Breb.), Kirch., 59 

 ^ar. minor, Nord , . 60 

 " Cordnnum, . . .59 



175 



CALOCYLINDRUS, costatus, Wolle,. 61 



" Cucurbita (Breb.), Kirch., 59 



" cnrtus (Breb.), Kirch., 59 



" De Baryi, . .58 



" diplospora, Lund., . 60 



" minutus (Ralfs), Kirch., 5-9 



" psendoconnatus, Nord., 60 



" Ralfbii (Kg.), Kirch., . 58 



" Thwaitesii, Ralfs, . 60 



CLOSTERIUM, Nitsch. Observa- 

 tions concerning, . . 38 

 " acerosum(Schrank),Ehrb. 42 

 " acuininatnro, Kg., . . 47 

 " acutum, Breb., . . 46 

 " amblyonema, Ehrb., . 46 

 " angustatum, Kg., . 41 

 " areolatum, Wood, . . 46 

 " attenuatnm, Ehrb., . 44 

 " Braunii, . . . .45 

 '' Brebissonii, . . . 72A 

 " costatum, Corda, . . 45 

 '' Cucumis, Ehrb, . . 42 

 " decorum. Breb., . . 45 

 " decussatum, Kg., . . 41 

 " Delpontei, . . .45 

 " Dianse, Ehrb., . . 47 

 " didymotocnm, Corda, . 40 

 " Ehrenbergii, Menegh., 48 

 Var. immune, Wolle, . 48 

 '' ensis, .... 40 

 " gracile, Breb., . . .40 

 " Jenneri, Kalfs, . . 47 

 " juncidum, Ralfs, . . 39 

 formagracillima laevis- 

 sima, Breb., . . .39 

 ' Kuetzingii, Breb., . 50 

 " lanceolatum, Kg., . . 40 



