90 -i-Wil czek: Beitrüge zu einer Algenflora der Umgegend v. Greifswald. 
Tab. 4. 
Diatomaceae. 
Oberer Ryckl 
1 Mittl. Ryck 
Stadtgraben | 
Ryckteich 
Ryckwiesen | 
Teiche 
Tümpel 
Gräben 
Im ganz. Gebiet | 
Januar 
Februar 
März 
April 
• rH 
cd 
»e-l 
Juni 
August 
September 
Oktober 
November 
Dezember 
Caloneis amphisbaena(Bory) 
CI. 
+ 
+ 
+ 
+ 
+ 
n 
silicula (Ehrb.) CI. 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
~b 
„ v. gibberula 
(Kg.) CI. 
+ 
+ 
+ 
+ 
Neidium affinis v. amphi- 
rhynchus Ehrb. . . 
© 
© 
© 
Pleurosigma elongatum 
W. Sm. 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
Gyrosigma accuminatum 
(Kg.) Rabenh. . . . 
©© 
© 
© 
© 
© 
Ö 
o 
accuminat. v. curta 
Grün. 
+ 
+ 
+ 
+ 
+ 
Spenceri (W.Sra.)Cl. 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
n 
„ v. nodifera 
(Grün.) v. H. . . . 
+ 
H~ 
+ 
+ 
+ 
+ 
Navicula Brebissonii Kg. . 
© 
o 
Ö 
© 
© 
© 
© 
© 
o 
r> 
mesolepta v. stau- 
roneformis Grün. . 
© 
© 
© 
© 
©© 
© 
© 
© 
o 
w 
borealis Kg. . . . 
+ 
+ 
+ 
r> 
maior Kg. 
© 
© 
© 
Ö 
© 
© 
o 
viridis (Nitzsch.) Kg. 
W 
© 
w 
• 
w 
© 
© 
• 
© 
© 
n 
„ v. commutata 
Grün. 
+ 
+ 
~b 
« 
r> 
viridis v. distingu- 
enda CI. 
+ 
+ 
+ 
n 
gentilis Donkin. . . 
© 
© 
© 
© 
r> 
cryptocephala Kg. 
+ 
Hb 
+ 
+ 
+ 
r> 
humilis Donk. . . 
~b 
+ 
+ 
+ 
+ 
+ 
+ 
r > 
rhynchocephala Kg. 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
n 
viridula Kg. . . . 
© 
w 
öö 
Ö 
• 
© 
© 
ö 
• 
© 
Ö 
rt 
„ f. minor Kg. 
0 
b© 
Ö 
• 
© 
© 
© 
• 
© 
n 
cincta (Ehrb.) v. H. 
© 
ö 
© 
© 
r> 
radiosa Kg. 
© 
© 
Ö 
©© 
© 
V 
gracilis Ehrb. . . . 
© 
© 
© 
© 
© 
ö 
© 
© 
© 
© 
o 
Y) 
„ v. schizonemoides 
v. H. 
+ 
+ 
+ 
V 
peregrina v. Menis- 
culus Schum. . . . 
+ 
• 
+ 
+ 
r> 
oblonga Kg. . . . 
+ 
+ 
