ligo CoDJugata3, Desmidiaceae, Staurastrum. 



f. 43, Cooke Brit. Desra. p. 189, t. 6Q, f. 4, Slaurastrum punctu- 

 lalum var. turgescens Rabenh. Fl. Eur. Algar. III, p. 208. — 

 Mediocre; cellulis 40*30, isthmo brevi, amplo, diaphano conjun- 

 ctis; semicellulis e latere reniformi-rotundatis, e vertice triangu- 

 laribus, angulis obtusissimis, lateribus late concavis ; membrana pa- 

 pillis numerosis prominulis obsita. 



Hab. in aquis stagnantibus ad «Renco» et «Ungiasca» Italia3 

 (De-Notaris) ; in Hibernia (Archer). — Inter Staurastrum mu- 

 ricatum et St. punctulatum quasi medium locum tenet. — Var. 

 arcticum Wille Ferskvandsalger fra Novaja Semlja p. 51, t. XIII, 

 f. 57: semicellulis a vertice visis lateribus convexis; raembrana 

 subtiliter punctulata. Ad «Matotchkin v. Del» Novse Semlise. — Di- 

 mens. 45 =# 30, lat. isthm. 14 [j.. 



145. Staurastrum punctulatum Breb. in Ralfs Brit. Desm. p. 133, 2873 

 t. XXII, f. 1, Liste p. 144, Rabenh. Krypt. Flor. v. Sachs. p. 188, 

 Alg. n. 1208, 1351, 1768, 1807, Fi. Eur. Algar. III, p. 208, De- 

 Not. Eleraent. p. 51, t. IV, f. 44, Delp. Specira. Desra. subalp. 

 p. 142, t. XI, f. 33-38, WoUe Desra. U. S. p. 127, t. 41, f. 43-45, 

 Cooke Brit. Desm. p. 160, t. 54, f. 0, Hansg. Prodr. p. 212, Wittr. 

 et Nordst. Alg. aq. dulc. exsicc. n. 72, 556, St. reiusum Breb. loc. 

 cit. — Parvura, punctato-granulatum ; semicellulis ellipticis, basi 

 rectis, dorso late rotundatis, lateribus angulatis, a vertice trian- 

 gularibus, angulis non productis, late rotundatis, lateribus modice 

 retusis; zygotis globosis, circ. 29 u.. diara., spinis basi turaidis, apice 

 attenuatis et dichotomo-furcatis, circ. 4 [x. longis arraatis. 



Hab. in stagnis in Italia (De-Notaris, Delpontb), Rossia (Ria- 

 binine), Gallia (Brebisson, Petit), Vogesis (Lemaire), Belgio (De- 

 Wildeman), Britannia (Ralfs, Cooke), Germania (Rabeniiorst, 

 Kirchner), Austria (Grunow), Hungaria (Istvanffi), Bohemia 

 (Schroeter, Hora, Studnicka, Hansgirg), Suecia (Cleve, Wit- 

 TROCK, Lundell), Norvegia (Nordstedt, Wille), Dania (Jacobsen), 

 Nova Semlia (Wille), Spetsbergia (Nordstedt), Groenlandia (Nord- 

 stedt), Fennia (Elfving), Lulea et RyskaLapp. (LAGERHEiM),Beeren 

 Eil. (Nordstedt), Amer. bor. (Wolle), Brasilia (Wille) Sibiria 

 (BoLDT), Birmania (Joshua), Nova Zelandia (Maskell). — Var. Kjell- 

 manii Wille Dijmphna Alg. i^. SQ, Staurasirum KJellmanu WiUe 

 Nov. Seml. 1879, p. 50, t. 13, f. 50-53, Cooke Brit. Desra. p. 163, t. 54, 

 f. 9: mediocre, circiter tertia v. quarta parte longius quara latius, 

 in raedio constrictura, sinu acutangulo ampliato; seraicellulis a raedio 

 ad apiceui sursum dilatatis, angulis plus rainus rotundatis, dorso 



