482 Myxophyceae, Heterocystidese, Microchsete. 



2,3-3,2 [1. diam.; articulis subglobosis vel ellipsoideis vel sub- 

 oblongis: heterocystis sparsis, subquadratis vel oblongis, 5,7-8,8 [u 

 longis, articulis vix crassioribus, 3,5-7,7 [x. crassis; sporis globosis, 

 ellipsoideis vel oblongo-cylindricis, catenatis, 3,8-7,7 (i. diam., 

 3,8-13,5 \i. longis. 



Hab. in surgentibus calidis 55-61° ad « Hveravellir » Islandire 

 gregaria (G. S. West). 



5. Aulosira Schauinslandli Lemmerm. Algenfl. d. Sandwich Inseln li 

 p. 622, tab. VII, fig. 9-11. — Filis flexuosis vel spiralibus, 10-11 

 [j.. crassis; vagina flrma, hyalina; articulis 9,5 [j,. latis et circiter 

 3 [i. longis, granulosis, ad genicula leviter constrictis; contentu cel- 

 lularum vacuolis impleto; articulo apicali hemisphgerico, circ. 8 {x. 

 longo, granulis crassioribus instructo; heterocystis semper interca- 

 laribus, subglobosis vel subcylindricis, 9,5 [x. latis, 11 jx. longis; 

 sporis ignotis. 



Hab. in Turbinariis insuhc Laysan (Schauinsland). 



JI^ICROCH/ETE Thur. [1875] Ess. p. 7, in Ann. des sc. nat. 6.*^ serie, 

 Bot., I, p. 378 (Etym. micros parvus et chcete seta), Born. et Flah. 

 Rev. III, p. 83, Coleospermum Kirchner [1878] Algenfl. v. Schles. 

 p. 239. — Fila simplicia, basi affixa, erecta. Trichomata intra va- 

 ginam solitaria. Heterocystae basilares et intercalares. Sporce a cel- 

 lulis inferioribus formatfe. 



Obs. Plantre minutse, marinae vel aqucne dulcis, in ca3spites stel- 

 latos vel tomentosos aggregatie. 



1. Mlcrochaete Goeppertlana Kirchn. in Engl. et Pr. Nat. Pflanzenfam. l^^^' 

 Myx. p. 76, ic. pag. 75, Coleospermum Goeppertianum Kirchn. 

 Algenfl. V. Schles. pag. 239, Mikrosk. Pflanzenw. pag. 40, tab. V, 



fig. 129. — Filamentis singulis; articulis cylindricis, 5-6 [x. diam., 

 basi filamentorum diam. 2-3-plo longioribus, apicem versus gradatim 

 abbreviatis, extremo diametro tantum 2-3-plo brevioribus, con- 

 tentu cseruleo-viridi granuloso farctis; vagina achroa, 6-8,5 [i. 

 crassa, initio apice clausa, deinde aperta, crassiori magisque ex- 

 pansa; heterocysta sphserica vel ovali, 6 \x. diam., 6-8 [x. longa ; 

 sporis basilaribus, 1-2 articulis ab heterocysta interjectis, singulis 

 vel binis, cylindricis, contentu brunneolo, diaphano, homogeneo, 6- 

 7,6 [1. diam. , 13-17 [x. longis. 



Hah. in Silesia, sociis aliis algis, in « Drehberg » (Kirchner). 



2. Mlcrochgete tenera Thur. Essai p. 7, B^rnet et Thuret Notes algolo- 1137 



