Plifoozoosporinre, MyriotiMcliificeae, Myriotvichia. 527 



Ainbitii cylindracea, basi lcnitor attonuata, axi raniis sccundariis 

 subdichotomis plus minus torulosis obsito, pilis hyalinis paucis pra3- 

 sentibus aut nullis; sporangiis unilocularibus sphoeroideis aut ovoi- 

 deis, circiter 50 y. diam., pediccllatis; sporangiis plurilocularibus 

 cylindraceis lanceolatisve, longitrorsum 1-2-seriatim locellatis, 25- 

 GO ^ 6-10. 



Hab. ad folia vetusta Zostera^ marince, qua^ investit, in 

 oceano Atlantico ad « Weymouth, Cumbroe, Arran » (E. A. Batters) 

 et ad « Swanage » (T. H. Buffham). — Frondes 1-3,5 cm. altsB, 

 200-250 p. crassoe. Color saturate olivaceo-brunneus, quasi nigri- 

 cans. Sa3pe fructificatio hujus speciei est monoica. 



3. Myriotrichia filiformis (Griff.) Harv. Manual p. 44, Phyc. Brit. 876 

 tab. CLVI, J. Ag. Sp. I, p. 14, Kuetz. Sp. p. 470, Buffh. in Journ. 



of Bot. 1891, p. 3, Mijriotrichia clava^formis f. Jiliformis Kjellm. 

 Handb. I, p. 47, f. 10. — Frondibus filiformibus, ad 2.5 cm. altis, 

 ssepius flexuosis et pluribus in funiculum contortis, filamento pri- 

 mario seu axi indiviso intervallis irregularibus quasi in nodos in- 

 crassato ; nodis his e ramis minutis papillseformibus densissimis 

 constitutis, pilis hyalinis dichotomis apices ramorum ornantibus : 

 articulis fili primarii diametro brevioribus; sporangiis (plurilocu- 

 laribus?) massas densas plus minus extensas axin ad intervalla 

 cingentes efficientibus, late conicis lanceolatisque, 25 ^ 16. 



Hah. ad Scytosiphonem lomentarium, Asperococcum 

 echinatum etc. in oceano Atlantico ad oras Britanniae (Griffiths, 

 BuFFHAM, Harvey, Dickie), ad «Roscoff, Finistere » (D. Karsakoff) 

 aliisque locis Gallise (Herb. Zanardini); in sinu Codano (J. Agardh). 

 — Zoogonidia (zoogametae) in sporangiis plurilocularibus pauciora 

 (8-12). Anne huc Dichosporangium repens Hauck, prgeeunte d."^ 

 Karsakoff, pertinet ?. 



4. Myriotricliia adriatica Hauck Meeresalgen p. 337, Notarisia 1886, sn 

 p. 17, De Toni & Levi FI. Alg. Ven. H, p. 65. — Filamentis 3-10 

 mm. altis, 20-30 u. crassis, erectis, inferne attenuatis, articulis 

 iiiferne monosiphoniis, superne polysiphoniis, articulis fructiferis 



1 y^-^-pIo diametro longioribus ; sporangiis plurilocularibus cylin- 

 drico-oblongis, 30-40 ^ 8-12, zoogonidia uniseriata continentibus; 

 sporangiis unilocularibus ignotis. 



Hab. ad S t i 1 p h r ani r h i zo d e m in mari Adriatico orientali 

 (F. Hauck). — Myriotrichio3 canariensi Kuetz. affinis, differt fila- 

 mentis articulisque longioribus. 



5. Myriotrichia canariensis Kuetz. Tab. Phyc. VI, t. 2. — Fronde 878 



