200 5YNOP8I8 OF BRITISH SI 



:»7!'. Hutchinsiae (Mis* Hutching* SpiruUnd)^ Ktz. 



Hob. ? 



CTnknown to me. 



Order 18. NO STOCK ACE2E. 

 CVII. MONORM1 A. 



380. intricata (The intricate Monormia) ; frond gelatinous, 



branched ; the brandies containing a spiral, moniliform 

 filament, composed of spherical, coloured cells, interrupted 

 here and there by a cell of a different kind and of larger 



size ; spores formed from the ordinary cells, Berk. Gl. Brit. 



Alg. p. 46. t. 18. (Atlas, PI. LXXIX. Fig. 378.) 

 Ilab. At Gravcsend, in the ditches of the marsh to the south of 



the Frindsbury canal, in great abundance. 

 This curious plant, which has but a slender claim for 

 admission into this work, being commonly a fresh-water 

 production, is extremely interesting by its structure and 

 beauty, and closely allied to the Spliarozygce, which im- 

 mediately follow. Monormia seems to diner from Splice- 

 rozyga chiefly in possessing a gelatinous branching matrix, 

 so loose in structure that it can hardly be called a frond, 

 surrounding the spirally-twisted filament. This filament 

 is of indefinite length, having many connecting cells : the 

 filaments of the Sphcerozygce, on the contrary, are gene- 

 rally short, with seldom more than one or two connecting 

 cells. The fructification in both appears formed on the 

 same type. 



CYIII. SPILEROZYGA. 



381. Carmichaelii (CarmichaeVs Sphcerozyga) ; "spores large, 

 oblong, twice or thrice as long as broad, commencing to be 

 formed from the cell- nearest the connecting one," Harv. 

 Phyc. Brit, pi 113,4. (Atlas, PI. LXXX. Fig. 379.) 



Belonia torulosa, Carm. Anabaina marina, Breb. 

 Hob. On decaying heaps of marine Alga?, also in ditches of 

 brackish water. 

 I have compared specimens of Anabaina marina, Breb., 

 received from Messrs. Ealfs and Thwaites, with Carmi- 

 chael's original Belonia torulosa, and find them to agree 

 in every essential particular. This plant is unquestionably 

 a Sphcerozyga, to all the individuals of which genus the 

 specific name " torulosa" which has the priority, is equally 

 applicable. 



