Sporochnus. \ ALGJS MELANOSPERMEJE. 173 



second year, but, in place of them, the young plants are clothed with 

 beautiful tufts of bright green fibres. 



9. DICHLORIA. Grev. Dichloria. 



Frond cylindrical, filiform, cartilaginous, pinnated with oppo- 

 site branches, becoming flaccid and of a verdigris-green 

 colour on exposure to the air. Fruct. unknown. Grev. 

 Name ; 8is, twice, and x^ w P lS > green, " in allusion to its sin- 

 gular change of colour." 



1. D. viridis, Grev. Green Dichloria. Hook. Br. FL v. ii. 

 p. 274. E. Bot. t. 1669. Turn. Hist. t. 97. 



Sea-coast. Near 'Belfast ; Dr. Drummond. Bantry bay ; Miss 

 Hutchins. 1 2 feet long. Frond excessively branched, capillary, all 

 the divisions exactly opposite. 



10. SPOROCHNUS. Ag. Sporochnus. 



Frond filiform, cylindrical or compressed, cartilagineo-membra- 

 naceous. Fruct. : club-shaped, moniliform filaments, radiating 

 in scattered warts, or concentrated in distinct (mostly cla- 

 vate, stalked) receptacles, often terminated by a deciduous 

 tuft of filaments. Grev. Name ; atropos a seed or sporule, and 

 X v s> wool, in allusion to the tufts of fibres terminating the 

 fructifications. 



1. S. pedunculatus, Ag. Pedunculate Sporochnus. Frond 

 slender, alternately branched in a pinnate manner; branches 

 set with alternate, distichous, clavate receptacles, which are 

 terminated with tufts of articulated fibres. Hook. Br. Ft. v. ii. 

 p. 274. E. Bot. t. 345. 



Marine rocks, rare. Bantry bay ; Miss Hutchins. Killiney, very 

 rare ; W. H. Harvey. Mouth of the river Bann, among rejectamenta ; 

 Mr. D. Moore. 



2. S. villosus, Ag. Hairy Sporochnus. Frond slender, 

 once or twice pinnate ; branches and pinnae opposite, set with 

 numerous whorls of dense branched filaments. Hook. Br. FL 

 v. ii. p. 274. E. Bot. t. 546. 



Very rare. Wicklow ; W. H. Harvey. 



3. S. rhizodes, Ag. Root-like Sporochnus. Frond rather 

 robust, irregularly branched; branches subdichotomous, flexu- 

 ose, covered with the wart-like fructification. Hook. Br. Fl. 

 v. ii. p. 275. E. Bot. t. 1688. 



In the sea : parasitic on various algae. Bantry bay ; Miss Hutchins. 

 West of Ireland and at Wicklow ; W. H. Harvey. 



4. S. Cabrera, Ag. Cabreras Sporochnus. Frond irregu- 

 larly dichotomous, linear, narrow, flat ; branches here and there 



