188 Myxophycese, Oscillaloriese, Oscillatoria. 



Hah. ad thallum Hydruri insidens tlicrmis Albuleis prope Tlbur 

 ad Romani (Fiorini-Mazzanti). 



c) Planta aerophila. 



78. Oscillatoria Schultzii Lemm. Brandeb. Alg. III, in Forschungsber. 

 d. Biolog. Stat. zu Pl(3n XII, 1905, p. 145, t. IV, f. 14-15. — 

 Strato obscure viridi vel nigrescente; filamentis rectis vel leviter 

 curvatis, 2,6 [x. crassis, ad genicula evidenter constrictis, apicibus 

 interdum curvatis rectis vel sub angulo recto inflexis; articulis 

 evidenter torulosis, subquadratis vel diam. paulo longioribus, raris- 

 sime brevioribus, 1,5-4 [i. longis, ad dissepimenta granulosis, con- 

 tentu pallide serugineo viridi confertis; ceHula apicali cuneato-ro- 

 tundata. 



Hab. in terra uda in « Cottbuserstrasse » ad «Finstervald» prov. 

 Brandeburgiensis (Lemmermann). 



Sectio VI. Terebripormes Gom. Mon. pag. 234. — Tricliomata in parte apicali 

 regulariter terebriformia aut in totum spiralia, apice plus minusve atte- 

 nuata; articuli saltem tertiae parti diametri trichomatis sequilongi. Plantee 

 h^^drophilse aut thermales, non ultra 8 |i,. crassae. 



79. Osclllatoria Boryana Bory Dict. XII, p. 465 (1827), Gom. Monogr. 445 

 p. 234, t. VIT, f. 22-23, Oscillatoria nigra var. Boryana Ag. Syst. 



p. 64, non Lynghya Boryana Hansg. Prodr. II, p. 97. — Strato 

 atro-chalybeo; trichomatibus per totam longitudinem vel tantum- 

 modo extremitatem versus laxe spiralibus, nonnullis rectis, apice 

 uncinatis intermixtis, flexilibus, ad genicula constrictis, 6-8 [i. cras- 

 sis, apice plus minusve acutis haud capitatis; articulis quadratis 

 aut diametro 2-plo brevioribus, 4-6 [x. longis, granulis refringen- 

 tioribus paucis conspersis; dissepimentis passim tenui-granulatis ; 

 cellula apicali superne rotundata vel plus minusve acute conica; 

 calyptra nulla. 



Hah. in Belgio prope Bruxelles (Bory), in thcrmis ad Bor- 

 cette prope Aix-la-Chapelle (Bory), in Bohemia (Hansgirg) et in 

 « Sihlthal » HelveticG (Dueggeli). 



80. Oscillatorla serpentina P. Richt. in Kuntze Rev. Gen. pl. III 446 

 (1898j, p. 387 c. ic. — Strato obscure viridi; tricho+iiatibus (siccis) 

 pallide cyaneis, flcxilibus, apicem versus sensim attenuatis plus 

 minusve regulariter spiralibus, non fragilibus, 5-6 [i. crassis, apice 



