Richard Volk. Studien über die Einwirkung der Trockenperiode 
1905 1904 1905 
® o| Untere = = 
_ Be 
[31 e5) une Das Phytoplankton. September 3 | September S 
AEIBE SIE BE =) 5 
Sale alalzıels 
[313391225 9. |13.|20.|27.|30.I11.\|5. I12.]19.26.| 3. 
Chodotella ciliata (Lagh.) Lemm. ............... + + 
u e loneisetan DenmrRer SER Pre + 
+ Centritraetus belonophora (Schmidle) Lemm...... Bu 
+++] +! ||Oveystis erassa Wittr. .........2-2co22eennec. +++] |+ + 
en . Er „ f. asymmetrica West..... + 
SE = E „  f. nodulosa West ......... S# 
+| + er ritypieaschodeme per + + 
zo + " iaenstris Chod.’.. ++ BE 
+++1+/4++++ ss Naegelii A. Br. .. ee teten Tee Eee: + /#+/1+1 +++ 141+1+/+ 
+44 4 14/44 55 NoyaesSemljaenWallener rer: ++'4+4++1+ +-+[++ 
+44) [++] |+ solitaria AWAY. a. A ee +!+[+ + /+++1 I+ 
En Gloeoeystis vesiculosauNaeo ren ee + 
+ +++ Botryococcus2Brauniiektzyper ee ee + ++ I+4] I+ 
+ +| |-+/+JlDimorphocoecus lunatus A. Br.................. + + |+ 
+ Dactylothece Braunii Lagh..................... ++ 
Pleurococeus Naegelii Chod. ................... + 
+ + = » (status Trochiseia) . + |+1 [+ 
+ is vulgaris Menech. .= ee + 
—L 5 & f. Stichococeus ... |+ 
de ss (status IHormotila)ea nen erer + 
r |+|| Hexasterias problematica Cleve................. + SF 
Protococeus infusionum (Schrank) Kirchn. ....... u 
Mougeotlauspech ee ee En 
+ Spirogyra tenuissima (Hassall) Ktz.............. SF 
Hyalotheca dissiliens (Smith) Breb............... + 
" mucosa (Mert.) Ehr. var. emucosa 
Schmidlere. ne Eu + 
Sphaerozosma excavatum Ralfs................. + = 
+ | ar papillatum W. & G. 8. West...... rin 
+ + vertebratumeRalisn ce. + 
Eu Gonatozygon KinahameRabar rer ee SF 
+ Ölosterium acerosum (Schrank) Ehr. ............ + |+1+ 
+ 2. z 5 ” „ var. elongatum Sr 
Rab... a ee + 
+ 2 acıeulare Tutfen Western. + /+ 
En n acutum (Uyneb) Brebsrnr en ar 
+ 5 anzustatumaRtz ee =F 
++ r COTDU Eh ++ 
-- ei JuneidumpRallsı m ee er ee SFr 
25 Kuetzingii Breb. var. vittatum Nordst. Ir 
en re Tieihleiniieketzie ee ae Ar 
+ 5 linea ABerty ne rose ar 
+ +/+ > macıentumuBreDreeer ++/+ + 
+ = moniliferum (Bory) Ehr. ............. SF 
+++ = peracerosum Gay var. elegans G.S. West Sn ar 
+ + + E, praelongum Breb. f. brevius Nordst... +++ Zell Ar ir 
E- + + Strigosumy Brep. a ee SE ++ + 
+ Arthrodesmus bifidus Breb. var. truncatus West.. Ir 
+ Staurastumgeracıle Raltss SE Ar 
+ = paradoxumeMeyenker er ererre SF 
+ | > PolymorphumsBrebgrr er er + |+ SF 
Ar ++ | a8 tetracerum Ralis re sen +++ +++ + 
+ HIHI + * vestitum Rats ee Bell Ar +++ 
