t m\ PEBVAl I i . L69 



there can be little difficulty in distinguishing one from the 



other. 



302. Rudolphiana (Rudolph?* Cladophora) \ filaments very 

 long, exceedingly Blender, fiexuous, Bubgelatinoso-membra- 

 naceous, much branched, brilliant yellow-green, inextrica- 

 ble : branches di-trichotomoufl or irregular ; ultimate ramuli 

 pectinate, Becund, verj Long and much attenuated; articu- 

 lations of the main filaments main times Longer than broad, 

 here and there Bwollen, their granular endochrome Borneo ha1 

 spiral ; those of the ramuli ti-lt) times as l"Mu r as broad, Ktz. 

 Phijc. Gm 3 3 PL L.W 



Conferva Rudolphiana, Ag. ('. Caneana, M'Calla. 

 hub. Parasitica] on Zostera, the various Laminaria, and other 

 Bea-plants, in - 6 fathoms water. Annual. Summer. 

 One of the commonest sea-plants in Boundstone Bay. 

 Cunnemara, where it infests every object on which it can 

 lay hold, at a depth of from two to six fathoms, or perhaps 

 more. AVhilst young, ami freely waving in the water, it 

 ■1 * \ beautiful object; but in age its tufts become 

 drawn out to a great Length, ami its filaments twisted into 

 green, mucous ropes, which stick to any object which 

 comes near them. The botanist who dredges where ties 

 plant grows, however much he may admire it on the firsl 

 few hauls, will soon wish that it was not quite so affec- 

 tionate. Among British species, the nearest affinity of C. 

 Rudolphiana is with C, gracilis, with which it agrees in 

 the ramification, and in the great length ^i' the alternate 

 ramuli. But its filaments are very much more slender, its 

 substance Bofter and more flaccid, and its joints very much 

 longer. The great Length of the joints will also distinguish 

 it from C. aloida, which it likewise resembles. 



303. refracta (77//- reflexed Cladophord) ; filaments capillary, 

 somewhat rigid, tufted, bright-green, verj much branched; 

 Becondan branches spreading on all sides, repeatedly di- 

 vided, thickly clothed uiili very much spreading or refl 

 Bhort branchlets, which are pectinated with ramuli iu\ their 

 upper Burface : articulations twice or thrice as Long a- broad, 

 Ktz. Pht/c. Gen. p. 267. (Atlas, PL LX1 . Fig. 305.) 



Conferva refracta, Roth. 



Hub. En rocky pools, lefl by the tide, near low-water mark. An- 

 nual. Summer. 

 c. refracta most Dearly agrees in character with C. at- 

 bida, hut the filaments are coarser, and far more 

 standing out from each other when the tuft is rem 



