Conjugatac, t)esmidiacea?, Cosmocladium. 805 



Ilab. iii aquis stagnantibus prope aWurzen)) (Bulnheim), ad 



«P^usa» (P. RiCHTER), prope « Maxen » Saxoniae (Rabenhorst) 



nec non pr. «Bett\vs-y-Coed » iti «North Wales )) (Cookk) et « Aboy- 



ne» Britannife (Cooke); ad «Chicheboville» Gallia) (Dangeard). 



3. Cosmocladium pusilium Ililse in Rabenh. Alg. n. 1963 c. icone, Fl. i9i(' 

 Eur. Algar. III, p. 54, Kirchii. Alg. Schles. p. 105. — Perexiguum, 

 horizontaliter expatisum, non affixum, libere natans; cellulis g!o 

 boso-compressis, circiter 2 a, crassis, lucidis; stipitibus filiformibus, 

 achrois, hyalinis. 



Ilab. prope (c Tjichokke )) ad uLiegnitz)) in Silesia (Hilse). 



4. Cosmocladium COnstrictum (Arch.) Josh. in Journal of Botany 18S3 1920 

 p. 292, Cooke Brit. Desm. p. 79, Bictyosphoirium consiriciain 

 Arch. in Micr, Journ. 1866, VI, p. 128. — C. saxonici rainus; celluli.s 

 subinde irregulariter numeri 8 ad instar effiguratis, apicibus ob- 

 tuso-rotundatis. 



Hab. in stagnis in Hibernia, ad a Aboyne et Penzance )) Britan- 

 nia; (Archer, Joshua, Cooke). 



5. Cosmocladium Quimbyii (Wood) Nordst. in litt. 1889, Cosmarium 1921 

 Quimbyii Wood Freshw. Alg. U. S. p. 134, t. I, f, 9, Wolie Freshw. 

 Alg. U. S. p. 61. — Cellulis parvis, subellipticis, rnedio profunde 

 constrictis, per tilamenta subdichotoma, hyalinula connexis; semi- 

 cellulis a fronte ellipticis et diametro subduplo longioribus, a vertice 

 ellipticis, a latere rotundatis, sinu lato; chlorophoris in utraque 

 semicellula singulis; membrana tenui, glabra. 



Hab. in aquis lentis prope a Camdem )) New Jersey (Quinby). 

 — Massam pellucidam, gelatinosam, viridulam in aqua3 superticie 

 efformat. Longit. cell. 25 y..; latit. a fronte 17-18 a., a latere 

 10-10,5 [j.. 



Subfamilia tertia Didymioideae (Reinsch) Hansg, 



Didymloidew Reinsch [1807] Algcnll, v. Franken p. 102 ex parte, Hansg. [1888] 

 ProJr. p. 172 {Didymid acece), De-Toni [1888] Consp. geii. Ghloropli. ia No- 

 tarisia III, n. 10, p. 452. 



Dcsmidiacete soliiarite Delponte [1873] Specim. subalp. p. 70. 



Celluhx! singulffi (pnst divisionem) omnirao inter se discretse (nec 

 in filamenta conjunct?e nec per filamenta hyalinula ramosa inter se 

 adhscrentes). 



