Conjugatae, ^ygnemacefo, Spirogyra. W 



phoris 3, anfractibus laxissitnis l-lVo-l, se secantibus; zygotis 

 globosis. 



Hah. m Anglia. — A cl. Cooke rite omissa. 



80. Spirogyra alpina Kuetz. 1. c, Rabenh. FI. Eur. .\lgar. III, p. 247. i855 

 — Dilute viridis; cellulis vegotativis 3G-40 a. latis, diametro 2-3- 



plo longioribus. 



Ilab. \n aquis glacialibus Helvetiae, in comit. Tyrolensi australi 

 (IIausmann). 



81. Spirogyra caiida Crouan in Maz6 et Schramm Algues de la Gua- 1856 

 deloupe ed. II, p. 40. — Saturate viridis, fluctuans. 



llab. in aquario fontis thermo-mineralis ad «Lamentin» in 

 insula Guadelupa (Coll. n. 762). 



82. Spirogyra thermalis Crouan in Schramm et Maze Algues de la 1857 

 Guadeloupe ed. I, p. 33, n. 47, Maz6 et Schramm Algues de la Gua- 

 deloupe ed. II, p. 40. — Viva saturate viridi-smaragdina. 



llab. m fonte thermali (S^^-SS") ad «Dole» in insula Guade- 

 lupa (CoII. n. 185, II ser.). — Viscosa, dein fragilis. 



83. Spirogyra pallida Dickie Notes on Algae from Lake Nyassa in isss 

 Journ. Linn. Soc. Botan. vol. XVII, 1879, pag. 281. — Pallide 

 flavo-virescens, minus lubrica; cellulis vegetativis cylindricis, 30 



u. latis, 4-pIo longioribus; chlorophoris 3, angustis, nodulosis; 

 membrana utroque fine nec protensa nec replicata. 

 Ilab. in lacu a Nyassa » in Africa (Laws). 



84. Spirogyra Hartigii Kuetz. Tabul phycol. V, pag. 10, t. 33, f. IV 1859 

 (sub RhijncJionemale). — Cellulis vegetativis diametro 12-15-pIo 

 longioribus, fructiferis medio leviter tumidis; zygntis ellipticis, dia- 

 metro ^'/o-plo longioribus; chloroph oris 2, laxissime spiralibus, 

 passim torulosis, anfractibus 2, 



Ilab. ad Drunsvigara (Hartig). 



Pamilia XXV. DESMIDIACE/E (Kuetz.) De-Bary. 



Desinidiacece Kuetz. [1833] in Linnrea VIII, p. 59 1, em. De-Bary [1858] Con- 

 jiig. 1858, Hanss. Prodr. [1888] pag. 160, De-Toni [1888] Consp. gen. Chlo- 

 roph. in Notarisia 111, n. 10, p. 452. 



Desmidiece Endl. [1836] Cen, p. 3 ex parte, Menegli. [1840] in Linnoea XIV, 

 p. 202 ex parte. 



Thallus hydrophilus, raro muscicola vel rupicola; cellulae solita- 

 rine vel in familias filiformes (raro dendroideas) consociata^, forma 



