174 0. Chr. Schmidt: Algen 1920—1924 [156 
Oscillatoria minima Gicklhorn, Österr. Bot. Zeitschr. 70, 1921, p. 4. — 
Österreich. 
O. nitida Schkorb., Not. Syst. Inst. Crypt. Hort. Petrop. 2, 1923, p. 87. — 
Rußland. 
O. princeps Vauch. var. pseudo-limosa Ghose, Journ. Linn. Soc. Bot. 46, 1924, 
p. 337, pl. 31, 2. — Labore. | 
O.tenuis Ag. var. nigra Schkorb., 1. c. 2, 1923, p. 87. — Rußland. 
Oscillospira Dubardi Langeron, Ann. Parasit. comp. et hum. 1, 1923, p. 86, 
Fig. 4. — Parasit, Goldküste. 
O. ingens Langeron, 1. e., p. 89, Fig. 6. — Parasit, Marokko. 
O. Lavieri Langeron, ]. c., p. 87, Fig. 5. — Parasit, Argentinien. 
O. media Langeron, Ann. Parasitol. hum. et comparat. 1, 1923, p. 86, Fig. 3. 
— Parasit., Senegal. 
Paracapsa Naumann (Chroococcaceae), Ark. f. Bot. 18, 1924, Nr. 21, p. 6. 
P. siderophila Naumann, 1. c., Fig. 1-3. — Schweden. 
Phormidium Corium (Ag.) Gom. f. crassior Wille, Nyt. Mag. f. Naturvidenskab. 
61, 1924, p. 77. 
Ph. gelatinosum Woronichin, Not. Syst. Inst. Crypt. Hort. Petrop. 2, 1923, 
p. 97. — Rußland. 
Ph. molle Kütz. var. fenuis Woronichin, 1. c. 2, 1923, p. 97. — Rußland. 
Ph. pulvinatum Collins, in Britton et Millspaugsh, Bahama Flora, 1920, p. 621. 
— Bahamas. 
Ph. pulvinatum Woronichin, 1. ec. 2, 1923, p. 98. — Rußland. 
Ph. ramosum Boye Peters, in Rosenvinge-Warming, Bot. of Iceland II, 1923, 
p. 281, Fig. 3—4. — Island. 
Ph. subcapitatum Boye Peters, 1. c., p. 282, Fig. 5. — Island. 
Ph. truncicola Ghose, Journ. Linn. Soc. Bot. 46, 1924, p.338, pl. 31, 3. — Lahore. 
Ph. valderianum (Delp.) Gom. var. tenuis Woronichin, 1. e. 2, 1923, p. 98. — 
Rußland. 
Plectonema diplosiphon Woronichin, Not. Syst. Inst. Crypt. Hort. Petrop. 
2, 1923, p. 114. — Rußland. 
Pleurocapsa Mayorii Setchell, Dept. Marine Biol. Carnegie Inst. Washington 
20, 1924, p. 258, Fig. 57. — Samoa. 
Porphyridium aerugineum Geitler, Österr. Bot. Zeitschr. 72, 1923, p. 84. — 
Österreich. 
Pseudanabaena tenuis Koppe, Arch. f. Hydrobiol. 14, 1924, p. 642, Taf. Vlla, 8. 
—. Deutsches Reich. 
Rhabdoderma sigmoidea Moore et Carter, Ann. Missouri Bot. Gard. 10, 1924, 
p. 398, pl. 21, Fig. 1. — Nordamerika. 
Rivulariopsis floccosa Woronichin, Not. Syst. Inst. Crypt. Hort. Petrop. 2, 
1923, p. 115. — Rußland. 
Rosaria Carter (aff. Hapalosiphon), Journ. Linn. Soc. Bot. 46, 1922, p. 54. 
R. ramosa Carter, 1. e., p. 54, pl. 4, Fig.2—6. — Neu-Caledonien. 
Schizothryx epiphytica Fritsch, Trans. R. Soc. South Africa 11, 1924, p. 361, 
Fig. 22. — Südafrika. 
Sch. lateritia Kütz. var. Hansgirgii Woronichin, Not. Syst. Inst. Crypt. Hort. 
Petrop. 2, 1923, p. 98. — Rußland. 
Sch. (Symplocastrum) tenuis Woronichin, 1. c., p. 98. — Rußland. 
Scytonema Bewsii Fritsch et Rich., Trans. R. Soc. South Africa 11, 1924, p- 364, 
Fig. 23. — Südafrika. 
