Cladoatephm.] ALGM MELANOSPERME^E. 179 



belongs ; but that it has no relation to Padina, or even to Dictyota, 

 is obvious to any one who will take the trouble of examining- it 'with 

 the aid of a microscope. Its resemblance to Padina is merely super- 

 ficial. 



19. HALISERIS. Tozzetti. Haliseris. 



Frond flat, linear, membranaceous, with a midrib. Root a 

 mass of woolly filaments. Fruct. : ovate seeds, forming dis- 

 tinct sori or groups (mostly arranged in longitudinal lines). 

 Grev. Name; a\s, Xt?, the sea, and O-C/HS, endive; sea en- 

 dive. 



1. H. polypodioides, Ag. Poly podium-like Haliseris. Frond 

 dichotomous (often proliferous), obtuse, entire at the margin. 

 Hook. Br. Ft. v. ii. p. 283. Fucus membranaceus, Stachh. 

 Ner. t. 6. E. Bot. t. 1758. 



Rocks in the sea, covered with sand, very rare. Quilty Strand, at 

 extreme low-water mark, Miltovrn Malbay ; W. H. Harvey. C 12 

 inches high, delicately raembranaceous, and turning in an oblique di- 

 rection from the margin to the midrib. When fresh it has an extremely 

 powerful disagreeable smell. 



TRIBE VI. ECTOCARPE^E. 



Plants marine, of an olive-green or (rarely J full-green colour, 

 filamentous, often capillary or crinoid, articulated, cartilaginous or 

 flaccid, not very juicy, nor adhering strongly to paper. Frond 

 much branched, mostly of a uniform structure throughout ; articula- 

 tions of the filaments mostly very short, (but very variable in the 

 same filament, and not to be depended on informing specific charac- 

 ters}. Root minute, scutate. Fructification double, mostly monoe- 

 cious (both kinds produced on the same individuals ), 1. Capsules 

 containing dark-coloured seeds ; 2. granules imbedded in the dis- 

 tended, often vesicated apices of the ramuli. 



20. CLADOSTEPHUS. Ag. Cladostephus, 



Filaments cartilaginous, inarticulate, whorled with short articu- 

 lated ramuli, olivaceous. Fruit double: J. ovate capsules, 

 furnished with a terminal pore, containing dark seeds ; 

 2. granules imbedded in the apices of the ramuli. Name ; 

 K\ados, a branch, and <rre0o9, a crown; from the whorled 

 ramuli. 



1. C. verticillatus, Lyngb. Whorled- Milfoil Cladostephus. 

 Ramuli regularly whorled, subdistant, mostly forked; branches 

 slender. Harv. in Hook. Br. Fl. v. ii, p. 322. Conf. vertic. 

 E. Bot. t. L718. and t. 2427. /. 2. 



