Myxopliycese, Chamaesiplionaceae, Hyella. 125 



a cl. F. Hy, florulic cryptogamicjB andegavensis solertissimo inda- 

 gatore), Notarisia 1888, p. (iOS. — Stratum radiatim expansum, 

 orbiculare, e filis duplicis indolis compositum, pannosum, primariis 

 horizontalibus intricatis, tortuosis, demum densissime implicatis, 

 secundariis verticalibus per testam longe excurrentibus; vagina 

 septata, ad basim filorum crassiuscula, superne tenuior, Articuli 

 disjuncti, id est in trichomate continuo Nostochacearum modo non 

 catenatl, inferiores breves, haud raro longitudinaliter divisi, supe- 

 riores longiores. Ramificatio vera. Propagatio fit per cellulas ve- 

 getativas vagina liberatas et per gonidia in gonidangiis evoluta, 

 contentus divisione succedanea formata. 



1. Hyella caespitosa Bornet et Flahault Note sur deux nouveaux genres 316 

 d"Algues perforantes, Hansg. Beitr. zur Kennt. der Quarn. und. 

 Dalm. Meeresalg. p. 4, Notarisia 1888 p. 605, Lag. in W. et N. 

 exs. n. 1199! et in W. N. et L. exs. 1610! Coll. in CoII. H. et 

 Setch, Phyc. Bor. Amer. n. 302. — Strato initio punctiformi vel 

 macula^formi, demum membranaceo vel pulvinato, 1-2 mm. lato, 

 luteo-olivaceo usque luteo-brunneo, parumper mucoso, carnoso; 

 filamentis erectis, plerumque parallelis, 10 [j.. circ. diam. non raro 

 brevibus (100-200 [x. longis) ; cellulis vegetativis plerumque 5-6 

 (rarius usque ad 10 [i. crassis) spbglobosis vel angulosis in fila- 

 menta raro irregulariter i^amosa consociatis; contentu luteo-oli- 

 vaceo, raro olivaceo ca^ruleo-viridi; membrana simplici gelatinosa 

 achroa. 



Hab. in conchis relictis et in crusta Carcinorum per oras ma- 

 ritimas Galliie septentrionalis (Bornet, Flahault, Debray, Chalon) 

 et meridionalis prope « Trayas » (Lagerheimj, Angliie (Cutler, 

 Hennedy, Holmes et Batters), Germaniae in sinu Chiliensi (Reinke, 

 Reinbold), in mari Adriatico ad litora Dalmatiae et Istrise (Hans- 

 girg), in ins. Faeroensibus (Boergesen), socio Mastigocoleo testa- 

 rum in « Mount Desent > et passim Amer. bor. (Collins), in 

 ostreis California3 (Setchell), nec non in madreporis ad « Colon » 

 Columbia' (Lagerheim); in Fuegia (Willems, Rousson, Hariot). — 

 Var. spirorbicola Hansg. Beitr. zur Kenntn. der Meeresalg. und 

 Bact. Fl. [1892] p. 226: strato microscopico; cellulis subglobosis 

 vel e mutua pressione angulosis, contentu viridi-griseo, 5-9 |j.. 

 crassis, 1-2 y^-plo longioribus; cellulis in filamentis secus lineam 

 unam, raro duas dispositis; filamentis plus minusve incurvatis, sa^pe 

 etiani acervatim in familias circa 100 jj.. et ultra latas consociatis ; 



