Conjugatcu, Dcsmidiucciu, Staurastruni. 1165 



sinu ^ubrectangulo amplo; semicellulis e basi angusta sursum di- 

 latatis, (lorso rotunilato-convexis, aculeis rectis acutis ornatis, an- 

 gulis superioribus in processuni validuin, ieviter incurvuni, aculea- 

 tum elongalis ; lateribus rotundato-concavis, denticulatis ; a verlice 

 visis triangularibus, lateribus subrectis, aculeis 3-4 ornatis, elon- 

 gatis; area centrali glabra; mombrana crassa, acliroa. 



Tlah. ad ((Kepnica)) in «Byczyna» Poloni;e (Raciborski). — 

 Latit. istlim. V^fere diametri transversalis corporis; long. sine acul. 

 57 [j..\ lat. cum process. 67 a. ; lat. isthm. 6 a. 



Sectio 4. SernicelluLo spinis numerosis acutis obsitie, e fronte visie angulis 

 spinis proiiriis (aculeis) carentibus, e vertice viscc triangularos, angulis 

 rotundatis, lateribus rectis loniterve convexis. [Zygota orbieularia, spinis 

 brevibus, ramosis instructa]. 



83. Staurastrum hirsutum (Ehrenb.) Breb. in Ralfs Brit. Desmid. p. 127, 28ii 

 t. XXII, f. 3, Liste p. 141, Rabenh. Krypt. Flor. v. Sachs. p. 190, 

 Alg. n. 1209, 1232, 1543, 1899 (sub 67. franconwo Reinsch), Fl. 

 Eur. Algar. III, p. 211, Archer in Pritch. Inf. p. 739, Ar-esch. Alg. 

 Scand. exs. n.. 238, Wartm. Cr. n. 137, De-Not. Elemont. p. 50, 

 t. IV, f. 41, Deip. Specim. Desm. subalp. p. 150, t. XI, f. 31-32, 

 Kirxhn. Alg. Schles. p. 166, WoUe Desm. U. S. p. 141, t. 45, f. 

 19-21, Hansg. Prodr. p. 214, Wittr. et Noi^dst. Alg. aq, dulc. ex- 

 sicc. n, 816, Xanthidium hirsutum Ehreub. Abh. 1833, p. 318, 

 Inf. p. 147, T. X, f. XXII, Microgeol. t. 37, VII, f. 8, Siaiira- 

 >iirum muricaium Ralfs TrMnsact. 1. c, Binatella hispida Brcib. 

 Alg, Falaise p, 58, t, VIII, GoniocyUis {Trigonocystis) muricala 

 Hass. Brit. Freshw. Alg. p. 351. Euastrum {Xanthidium) hii^su- 

 ium Kuetz. Phyc. germ. p, 137. — Magnum, tertiam partem cir- 

 citer longius quam latius, plus ininus dense piloso-spinulosum, sinu 

 plus minus lineari, acutangulo, extrorsum parum vel Jiaud ampliato ; 

 semicellulis late elliptico-fusoideis vel subsemiorbicularibus, spinis 

 tenuibus strictis hirsutis, a vertice triangularibus, angulis obtuse 

 rotundatis, lateribus rectis vel leniter convexis ; zygotis orbicula- 

 ribus, spinis brevibus ramosis obsitis. 



Hab. in stagnis in Italia (De-Notaris, Delponte), Gallia (Bre- 

 bisson) , Vogesis (Lemaire) , Belgio (De-Wildeman) , iJritannia 

 (Ralfs, Cooke), Germania (Rabenhorst , Kirchner) , llungaria 

 (IsTVANFFi), Bohemia (Couda, Hansgirg), Suecia (Cleve, Lundell), 

 Norvegia (Nordstedt, Wille), Sibiria (Boldt), Dania (Jagobsen), 



