182 ALGM MELANOSPERME/E. [Myriotrichia. 



ing frond ; siliquac oblong, obtuse. Harv. in Hook. Br. Fl. 

 r/ii. p. 326. 



Sea-shores, not rare on the east coast. Bantry bay ; Miss HutcTiins. 

 Ardmore ; Miss Ball. Habit something like that of Codium tomen- 

 tosum. 



4. E. granulosus, Ag. Granular Ectocarpus. Filaments 

 excessively branched, slender, upper branches short, patent, 

 opposite ; apices elongated and hyaline ; capsules solitary, ellip- 

 tical. Harv. in Hook. Br. Fl v. ii. p. 326. E. Bot. t. 2351. 



On other Algas. Bantry bay ; Miss Hutchins. Mangari's bay ; 

 Miss Ball. 3 10 inches long, delicate : capsules large, dark, seated 

 in the ultimate branches. 



5. E. sphcerophorus, Carm. Hound-fruited Ectocarpus. Fi- 

 laments slender, tufted ; upper branches patent, opposite or in 

 fours ; capsules globose, opposite to each other or to a branch. 

 Harv. in Hook. JBr. Fl. v. ii. p. 326. E. brachiatus, Ag. (not 

 Conf. brachiata of E. Bot.} 



On other Algae. Bantry bay ; Miss Hutchins. The Bantry bay 

 station for E. mertensii, given in Eng. Bot. and Hooker's Br. Flora, 

 must be cancelled. I have examined Miss- Hutchins* specimens so 

 named, and find them to belong to this, and the preceding species. The 

 true E. mertensii, which is an extremely rare and little known plant, is 

 regularly distichous and beautifully bipinnate ; the pinna* scarcely one- 

 fourth the thickness of the branch in diameter. 



23. MYRIOTRICHIA. Harv. Myriotrichia. 



Primary filament olivaceous, flaccid (simple), beset with seti- 

 form, obtuse, quadrifarious ramuli; their apices bearing 

 crinoid, hyaline, dichotomous, long articulated filaments. 

 Fruct. : ovate capsules, including a mass of olivaceous seeds. 

 Name from juvpios, a thousand, and Opit-y a hair ; from the 

 innumerable hyaline, hair-like filaments which spring from 

 the apices of the ramuli. 



1. M. clavcBformis, Harv. Club-shaped Myriotrichia. Harv. 

 in Hook. Journ. of Bot. vol. 1. p. 300. t. 138. Wyatt. Ala. 

 Danm. No. 131. 



Parasitical on Chorda lomentaria. At Cable Island, near Youghal ; 

 Miss Sail. Fronds half an inch high, tufted, slender, flaccid, sub- 

 gelatinous, olivaceous, lineari-clavate, (in outline,) surrounded with 

 hyaline filaments. Frond articulated throughout, the articulations of 

 the stem and ramuli very short ; of the hyaline filaments many times 

 longer than their breadth. This curious little plant was originally dis- 

 covered at Torquay, in Devonshire, by Mrs. Griffiths, and has re- 

 cently been added to our Flora by Miss Ball, an acute and zealous 

 algologist, and the discoverer in this country of Sporochnus Cabreras, 

 and several other rare plants. 



