144 Myxophycese, Oscillatoriaceae. 



Rivulariacecu. — Filaincnta plerumquo basi adfixa, apice iu piluui 

 pluricellularcui achroum decurrentia. 



CamptotrichacecB. — Filamenta plerunique cpiphytice viventia, 

 utrinque in pikun decurrentia. 



I. PsiLONEMATE.i-: Kirch. in Engl. & Prantl. Nat. Pfl. p. BO. — Filamenta nun- 

 quam in apicem piliformem attenuatum abeuntia. 



Familia III. OSCILLATORIACE^ (Gray) Kirchn. 



Oscillatoriacece Harv. [1868] Ner. bor. Amer. p. 96 excl. gen. phir., Kirchn 



[1898] in Engh & Prantl Natiirl. Pflanzenfam. p. 61. 

 Oscillatoridece Gray [1821] Arrang. Br. Pl. I, p. 280, excl. Rivularia et Scy- 



tonemate. 

 Oscillatorinoe Ag. [1824] Syst. p. XXIV excl. gen. plur., Kuetz. [1845] Phyc. 



germ. p. 156, partim. 

 Oscillarice Bory [1827] in Dict. class. d' hist. nat. XII, partim. 

 Oscillariece Menegh. [1838] Cenni organ. Alghe p. 28, escL Anabaina. 

 OscillatoriecB Harv. [1838] Gen. South Afric. Pl. p. 405 pro minima parte. 

 Oscillatoridcv et Oscillatorece Lindh [1847] Veg. Kingd. p. 18 p. p. 

 Oscillariacece Stiz. in Rabenh. Alg. Sachs. pag. 19, Rabenh. Fl. Eur. Alg II 



(1865) p. 2. 

 Eomocystece Born. et Flah. [1886] Rfev. Nost. h^tfer. I, p. 325. 



Trichomata simplicia (nec ramosa) e cellulis vegetativis fequalihus 

 (articulis) constituta, rarius unicelhihiria, pleruniquc vagina circum- 

 data; filamenta simplicia vel rarius ramosa e trichomatibus singuHs 

 vel plurimis confecta. Filamenta et trichomata raro sparse viventia, 

 plerumque ob confiuentiani floccos, membranas, ceespites etc. efficien- 

 tia. Propagatio hormogoniis; heterocystse nuUae, 



Obs. Articuli membranis tenuibus circumdantur chlorurato zinci 

 jodurato plerumque non cserulescentibus et quoad compositioncm 

 cutinffi Phanerogamarum similibus; protoplasma plerumque fcrugineo- 

 viride, rarius violaccum vel brunneohim, rarissime roseum; celkila^ 

 (articufi) plerumque breviter cyfindricfe vel disciformes, rarius dolioli- 

 formes, in Spirulina longe cylindrica^ et spiraliter revohit;e; ccllula 

 apicalis ro.tundata, cuneata vel capitulata, nunquam in pilum abicns; 

 filamenta plerumque recta, ssepe apicibus donata curvulis vel spira- 

 liter revolutis, in quibusdam generibus per totam longitudinem spi- 

 raliter convohita; soepe etiam observantur trichomata plura intra 

 vaginam singulam plus rainusve crassam filamentum unicum consti- 



