MjrxophycesB, Stigonemacese, Stigonema. 589 



summis attenuatis, procumbentibus, intertextis, plus minusve ra- 

 mosis; ramis alternis, 5-11 [i. crassis, apice sensim attenuatis; cel- 

 lulis uniseriatis arctissime conjunctis, membrana subcrassa, firma, 

 fuscescente, contentu subtilissime granuloso; cellulis apicalibus 

 angulosis, confervoideis ; vaginis tenuibus, striatis, cellulas arcte 

 includentibus, cellulis interstitialibus imllis. 

 Hab. in terra Kerguelensi (Eaton). 



16. Sirosiphon Kergueiensis Reinsch Freshw. Alg. fr. Kerguelen p. 212. 1345 



— Filamentis ramosissimis ; filaraento primario procumbente, 27- 

 33 [A. diam., ramis irregulariter ramosis, raraulis ultimis apicem 

 versus sequaliter latis, 24 [x. diam.; cellulis trichomatis primarii 

 ac ramulorum ovalibus, 13 [i. crassis, usque irregulariter sphseri- 

 cis, in seriem simplicem dispositis; intervallis hyalinis (heterocy- 

 stis?) longitudinem cellularum lequantibus, disjunctis, articulis tu- 

 buliformibus angustissimis; contentu dilute serugineo, meinbrana 

 subtili decolorata; cellulis extremis lyngbyaceis; vaginis crassis, 

 hyalinis, decoloratis subhomogeneis. 



Hab. in terra Kerguelensi (Eaton). 



17. Stigonema vermicuiaris (Suring.) Sirosiphon vermicularis Su- 1346 

 ring. Alg. Jap. Mus. Lugd.-Bat. (1870) p. 19 nec Reinsch. — Strato 

 repenti, parce et vage ramoso, ramis patentibus aut rectangulari- 



bus, elongatis, cum trichomate flexuosis, 13-25 [a. diam. ; cellulis 

 1-2 in apicibus clavato-tumidis, ramorum bi- vel pluriseriatis, aeru- 

 gineis, tubo gelineo crasso, trichomatis primarii laraelloso fusce- 

 scente, raraorura hyalino, cinctis brevioribus 7,5-15. [a. 



Hdb. in terra humida Japoniae (Suringar). — Sirosiphoni inter- 

 medio Kg. et Braunii Kg., varietatibus iS". oce^/a^^' (Dillw.) Kuetz. 

 sp. proxima. 



18. Sirosiplion Oliveri Reinsch Freshw. Alg. fr. Kerguel. Isl. p. 212. 1347 



— Ciespitulis parvulis; trichomatibus adscendentibus, prolongatis, 

 subramosis; ramulis singulis, raro pluribus leviter contortis e serie 

 simplici cellularum formatis; cellulis ovalibus, diam. dimidio bre- 

 vioribus; membrana firma, crassa, extrorsum fuscescente; contentu 

 homogeneo, obscure terugineo; vaginis membranaceis, siinplicibus, 

 subtenuibus; cellulis interstitialibus ignotis. 



Hab. in casspitulis parvulis, socio Nostoc coriaceo et Scytone- 

 mate quodam in terra Kerguelensi (Eaton;. 



19. Stigonema sp. (Reinsch) Sirosiphon n. sp. Reinsch Freshw. 1348 

 Alg. fr. Kerguel. pag. 212. — Trichomatibus singulis, usque 112 



[JL. crassis inter alias algas sparsis, irregulariter pinnato-raraosis, 



