254 MyxopliycesB, Lyngbyese, Pliormidiuin. 



dissepimentis frequenter granulatis; cellula apicali calyptram ro- 

 tundatam prasbente. 



Hab. in terra humida per totam Europam diffusum (Lyng- 

 BYE, Agardh, Hofman-Bang, Bory, Desmazieres, Suringar, New- 



TON, KUETZING, HOLMES, BaTTERS, HePP, ScHENK, KiLLIAS, SghIE- 



DERMAYR, Hansgirg, Richter, Kirchner, Schroeter, Dalla Torre, 

 IsTVANFFi, Schmidle, Gutwinski, Beck, Grunow, Mougeot, Ria- 

 BiNiNE, Hansgirg, Hauck, Cesati, Meneghini, Zanardini, De Toni, 

 PoLLiNi, Comelli, Grillt, Balsamo, Massalongo, Tassi, Zanfro- 

 GNiNi, Macchiati, Gomont etc. etc), Islandiam (Lindsay), « Tschal- 

 digoU» Caucasi (Schmidle), insulas Faeroenses (Wille, Boergesen), 

 ins. «Menorca» Baleariura (Rodriguez), Africam borealem (Debray, 

 Montagne, Maupas, Sauvageau) et centralem (Welwitsch), Asiam 

 meridionalem ad Saigon (Henry) et centralem ad flumen «Kebin» 

 (Hirn), Groenlandiara (Boergesen), Araericam f(]ederatam (Wolle, 

 Bessey, Collins, Setchell, Saunders, Gardner, Farlow) et in- 

 sulas S. Vincent et Dorainica (West), insuhis Falkland (J. D. 

 Hooker) et Borneum (Beccari) Fuegiara ad « Cockburn » et Grahara 

 (Hooker). 

 67. Phormidium Setchellianum Goraont Monogr. p. 190, t. V, f. 25-26. 

 Setch. in Coll., H. et Setch. Phyc. Bor. Anier. n. 53! — Strato 

 tenui, arachnoideo, fusco-purpureo, siccitatc atro-chalybeo ; vaginis 

 delicatulis, pleruraque in raucura amorphura oranino diffluentibus, 

 chlorozinc. jodur. non cterulescentibus ; trichoraatibus dilute pur- 

 pureis, parallelis, rectis vel modice flexuosis non torulosis, 4,4-8 {i. 

 crassis, apice capitatis et vix attenuato-arcuatis vel uncinatis ; 

 articulis subquadratis vel diani. longioribus, 3-6 ij.. longis; disse- 

 piraentis s?epe lineis gerainis punctatis granulatis; cellula apicali 

 calyptram depresso-conicam praebente. 



Hab. lapides submersas ad fundum rivuli propc « Norwich » 

 ditionis Connecticut AmericLB foederata^ (Setchell). 



Species iiicertse vel non satis descriptse. 



68. Phormidium adspersum Runier Alg. Deutschlands p 51, t. IX, 



f. 217, 1S15. 

 69 Phormidium lyngbyaceum var. rheticum Briigg. in VHI. Jahrcsl). 



(U;r Naturf. Ges. Graubiindens, Lcvicr in Erb. Critt. It. Ser. II, 



n. 666! 



