Myxophycese, RiVTilarJacefe, Calotlirix. 6B5^ 



laiiiellosis, achrois vel luteo-fuscescentibus, ad 20 jj,. diam., tricho- 

 uiata longe superantibus, siiperficie passim in libras subtilissinias 

 solutis; heterocystis (?) achrois, hyalinis, trichomatis diametro 2-3- 

 plove majoribus. 



Hab. iu rupibus aqua superfusis, a i litora lacus Laceusis (Laacher 

 See) ad Tilsit (List), ad litora lacus « Wettern » Sueci;e, « Thun » 

 Helvetite, Wiirmsee, Bavarice « Lago Fncino» Italiie (Rabenhorst), 

 in Austria (Beckj et in Italia in horto botanico Patavino (De Toni). 



64. Schizosiphon obscurus Dickie Notes on sonie Alg« found in the 1446 

 North-Atlantic Ocean iu Journ. Linn. Soc. Bot. XI, 1871, p. 459, 



fig. 5 [Schizosiphon obscurum). — Filamentis rectis, vagina bre- 

 vioribus, e cellula basali lat:i, subsphgerica sursum gradatim atte- 

 nuatis, plerumque torulosis, vagina distincta, obscure lamellosa. 



Hab. in oceano Atlantico prope ins. Capitis viridis, currentibus 

 transvectus (Mitchell). — In ligno, in quo crescit, stratnm tenue 

 formans. Filamenta longitudine variabilia. 



65. Schizosiphon kerguelensis Reinsch Freshw. Alg. fr. Kerguel. Isl. 1447 

 p. 211. — Strato caespitoso, ca^spitulis confertis, radialiter dispo- 

 sitis, ad 6 mm. altis; trichomatibus radiantibus, dichotomice ra- 

 mosis, 16-33 ]x. diam. ; pseudoramulis extremis 13-16 [x, diam.^ 

 corymbose fastigiatis; apicibus paulatim subangustis; vaginis pseu- 

 doramnlorum fuscis, integris, cellularum diametrum vix tequantibus; 

 cellulis omnibus ;equalibus^ apicem versus non decrescentibus, 

 15-18 \y. diam , contentu p;illide olivaceo viridi, granulis majoribus, 

 refringentibus dense repleto; heterocystis singulis aut compluribus, 

 basilaribus, subsph^ericis, diam. cellularum sequalibus. 



Hab. in muscis aquaticis in terra Kerguelensi (Eaton). 



66. Schizoslphon rupestris Rab. Fl. Europ. Alg. II, p. 238, Sch. api- i448 

 culatus p. rupestris Kuetz. Spec. p. 327. — Filamentis sparsis vel 

 aggregatis, simplicibus vel parce pseudoramosis, 9-11 [x. diam. ; tri- 

 chomatibus subulato-flagelliformibns, acuminatis, pallide ierugineis, 

 brevi-;irticulatis, subtiliter granulosis, basi torulosis, 6,5-7,2 \i. 

 diam.; vaginis crassis, distincte lamellosis, saturate aureo-fuscis, 



aut cuspidatis, clausis, trichomata longe superantibus aut abbre- 

 viatis, truncatis, apice dilatatis, fissis; heterocystis globosis, tri- 

 chomatis diainetro subgequalibus vel paulo rainoribus. 



Hab. in rupibus madidis inter Gloeocapsas, Scytonema- 

 ceas aliasque algas similes, plerumque sparsus, rarius in cajspi- 

 tulos consociatus (Kuetzing, Rabenhorstj. 



67. Schlzosiphon apiculatus Kuetz. Sp. Alg. p. 327. — Trichomatibus i449 



