300 HARVEY’S ILLUSTRATIONS. 
longè articulata enascuntur. Fructus capsule ovate glom- 
erulum olivaceum includentes. | 
6. Myriotrichia claveformis. Harv. MSS.—(Tas. 
CXXXVIII.) 
Radix callus exiguus, parasiticus. rondes ex una basi 
plurimae, fasciculatee, semi-unciales, tenuse, flaccida, sub- 
gelatinosee, simplices, lineari-clavatze, olivaceze, filis hyali- 
nis tenuissimis circumdate. Filum primarium totam fron- 
dem percurrens, simplex, basi attenuatum, articulatum, infra 
nudum, apicem versus ramulis vestitum. Ramuli sparsi 
quadrifarii . vel verticillati,, obtusi,. inferiores breves nudi, 
superiores (sicut filum primarium) ramusculis ornati, apice 
filamenta tenuissima hyalina dichotoma longè articulata 
ferentes, quæ sæpe in frondibus provectioribus maxime im- 
plexa sunt. Articuli : fili primarii brevissimi, geniculis con- 
tractis, transversim punctato-fasciati, punctis proliferis, que 
demum in ramulos producuntur ; ramulorum oblongiusculi, 
geniculis hyalinis. Capsule sessiles, ellipticæ vel ovate, 
limbo pellucido cinctæ, glomerulum seminum olivacearum 
includentes. Chartze arcté adhæret. 
Discovered by Mrs. Griffiths in August 1833, at the 
“ Bathing Cove, Torquay,” growing parasitically on Chorda 
lomentaria. 
This is a very curious little plant, in habit a good deal 
resembling Dasycladus claveformis, but of a totally different 
structure, if that plant be, (as Agardh assures us it is,) nearly 
allied to the Characee (especially to Nitella),—a tribe to 
which our parasite is not in the least related. Myriotrichia 
will stand next to Ectocarpus, from which it differs far more 
in habit than in structure. The long hyaline fibres which I 
have admitted into the generic character appear to be in 
every respect similar to those found in Trichocladia, Chor- 
daria and many other Algæ of totally different families. 
These fibres, however, do not occur in any other genus of 
Ectocarpee. ; 
Tas. CXXXVIII. Fig. 1, Plants: nat. size, parasitical 
