401 



Thallus filameutosus. Filu articulata, e cellularum serie unica 

 formata, ramosa, stricta, nuda, raxo passim corticata (Ch. hergamensis) ; 

 rami supente fasciculatim ramellosi ; articuli cylindrici. Cytioderma 

 tenue, homogeneum, maxime hyalinum. Cytio- 

 plasma homogeneum , plerumpue rhodophyllo 

 coloratum. 



Propagatio fit polysporis immobilibus, ova- 

 libus, in ramellorum apice vel lateraliter for- 

 matis, corymboso-aggregatis. Antheridia sub- 

 globosa terminalia. Tetrasporae raro observatae, 

 in Ch. bergamensi optime evolutae, etiam 

 fortasse in Chantr. ehalybea obviae conf. 

 A. Braun Verj. p. 153. Pringsheim Beitrage 

 zur Morphologie der Meeres-Algen p. 28. in 

 adnot. Fig. a. magn. nat. b. 300 /i aucta. 



CXVII. Cliaiitransia Fries (Syst. 



orb. 1825.). 



Genus unicum. Character idem ac familiae. 

 Omnes species minus acute limitatae. 



Ch. chalybea (Lyngb.) Fries (Plant. homom 

 p. 338. Ktz. Spec Alg. p. 429. Tabul. phycol. 

 V. T. 41. Rabenh. Krypt. Flor. v. Sschs. I. 

 p. 256. Alg. 225. Aresch. Alg. Scand. N. 232. 

 Trentepohlia' pulchella /9. chalybea Ag. Syst. 

 p. 37. N. 3.). Ch. caespitosa chalybea, sub- 

 polhcaris; filis ramisque subappressis strictis, 

 radiatim dispositis ; articulis diametro (1/219 — 

 7i96'" = 0,00041—0,00045") triplo-sextuplo 

 longioribus; polysporis in ramellis lateralibus 

 racemosim cumulatis. v. v. 



b. radians Ktz. (1. c. Eabenh. 1. c), pul- 

 vinulis subglobosis, diam. 7 2 " vix aequantibus. 



c. muscicola Ktz. (1. c. Eabenh. 1. c), 

 obscurior colorata. 



d. Leibleinii (Ch. Leibleinii Ktz. 1. c), filis 

 paulo crassioribus. 



Hab. in lapidibus, lignis fabrefactis, muscis 

 majoribus submersis totius Europae. 



Babenhorst, Flora Europaea. III. 



26 



