526 Phpeozoospoi'iiiae, Myriotricliiacore, Myriotrichia. 



MYRIOTRICHIA Harv. [1834] in Hook. Journ. of Botany vol. I, p. 300, 

 Manual p. 43 (Etym. myrios innumerus et thrix pilus), J. Ag. 

 Sp. I, p. 13, Kuetz. Sp. p. 470, Ardiss. Phyc. medit. H, p. 81, 

 De Toni Syst. Uebers. Fucoid. 1891, p. 179, Kjellm. Handb. I, 

 p. 46, Engl. & Prantl Natiirl. Pflanzenfam. 86. Lief. pag. 215, 

 Karsakoff in Journ. de Botanique VI (1892), p. 433-444 cum 

 tabula (ubi de copulatione zoogonidiorum ample disseritur), Batters 

 in Annals of Botany 1895, p. 312. — Characteres familia^. 



Obs. Teste d."^ N. Karsakoff, zoogonidia e sporangiis plurilocula- 

 ribus orta inter se copulantur. 



1. Myriotrichia clavseformis Harv. Algol. Illustr. n. 6, t. 138, Phyc. 874 

 Brit. tab. 101, J. Ag. Sp. I, p. 13, Crouan FI. Finist. p. 166, t. 27, 



f. 170, Kuetz. Sp. p. 470, Tab. Phyc. VI, t. 3, Zanard. Icon. Phyc. 

 adriat. III, p. 101, t. CV, Naeg. Neuer. Algensyst. p. 147, t. 3 f. 

 13-20, Hauck Meeresalgen p. 336, De Toni & Levi FI. Alg. Ven. 

 II, p. 64, Ardiss. Phyc. Med. II, p. 81, Kjellm. Handbok I, p. 47, 

 Farl. Alg. N. Engl. p. 67, non Buffham in Journ. of Bot. 1891, t. 314, 

 f. 4-12. — Frondibus ad 2-5 cm. altis, caespitosis, flaccidis, subgelati- 

 nosis, simplicibus, lineari-clavatis, olivaceis, nube filorum hyalino- 

 rum circumdatis; filamento primario basi attenuato nudo, superne 

 ramis vestito; ramis quadrifariis verticillatis aut sparsis et tunc 

 undique egredientibus, inferioribus brevibus nudis, superioribus 

 versus apicem sensim longioribus, basi nudis apice ramulis obsitis; 

 filis elongatis hyalinis simplicibus aut dichotomis ex apice ramuli 

 cujusvis exorientibus ; articulis fili primarii diametro semibrevio- 

 ribus, ramorum sequalibus aut paulo longioribus, in filis hyalinis 

 valde elongatis ; sporangiis unilocularibus in axi sessilibus, ssepe ad 

 axillas ramulorum dispositis, ovatis, circ. 40 a. diam. 



Hah. ad a 1 g a s varias e. gr. S c y t o s i p h o n e m I o m e n t a r i u m, 

 Fucum serratum,Asperococcum echinatum, Dictyosi- 

 p h n e s, C o r al I i n a s sp. etc, ad folia Z o s t e r ae in oceano Atlanti- 

 co ad oras Britannise (Griffiths, Haryey), Scandinavias (Kjellman), 

 Gallioe (Lebel, Crouan), Americae borealis (Farlow); in mari Adria- 

 tico ad Tergeste (Hauck, Zanardini) et «Muggia» (Zanardini). — 

 Zoogonidia (zoogameta) in sporangiis plurilocularibus 8-32. 



2. Myriotrichia densa Batt. On some New Brit. mar. Algae in Ann. 875 

 of Bot. vol. IX, n. XXXIV (1895), p. 311, t. XI, f. 11-13, Myrio- 

 trichia clava^formis Buffh. in Journal of Botany Novemb. 1891, 

 tab. 314, f. 4-12 (quoad sporangia plurilocularia) non Harvcy. — 



