SYNOPSIS OF BKITISTI SEAWEEDS. 



XVII. ZONARIA. 



35. collaris (The collar Zonaria); frond procuml 



ous, orbicular, or cuneate and variously Lobed, from it- upper 

 Burface emitting cup-shaped, membranaceous fronds; the un- 

 der surface rooting, denselj Btupose, Ag, Sp, Ala. v. l.p. \'ll. 

 (Atlas, PL XIII. Pig. 1,9. 

 Padina collaris, Orev. V. omphalodes, Mont. Zanardinia pro- 



totypus, Nardo. 

 U((h. Jersey. (Washed ashore) 



This most interesting addition to the Channel Nereis, was 

 recently found on the shores of Jersey, by Miss Turner, to 

 whom I am indebted for the specimens here figured, and 

 which I rejoice to be able to include in the present work. 

 They were "quite fresh," Miss Turner informs me, "when 

 picked up ; lying among other Alga? on the sand in Granville 

 Bay ; they had a saucer-like shape, which they have lost in 

 pressing." They consist merely of the secondary fronds, 

 accidentally torn from the firmly-attached primaries, which 

 may possibly be reached by dredging on the coast. Never 

 having seen the primary frond, I give the specific character 

 and description nearly in the words of Agardh. 



3G. parvula {The small Zonaria) ; frond procumbent, attached 

 by fibres issuing from its lower surface, membranaceous, 

 suborbicular, variously lobed ; lobes free, rounded, scarcely 

 marked with concentric lines, Grev. Crypt. Fl. t. 360. (Atlas, 

 PL XIII. Fig. 50.) 

 Padina parvula, Grev. P. reptans, Crouan. Padinella parvula, 



Aresch. Aglaiozonia parvula. Zanard. A. reptans, K'ritz. 

 Hab. Atlantic coasts. On stones and nullipores near low-water 

 mark, and especially on nullipore banks in 4-15 fathoms 

 water. Perennial ? Summer. 

 This is not an uncommon plant on various parts of our 

 coast, though frequently overlooked, owing to its hiding in 

 crevices, or creeping through the much-branched stony 

 nullipores. When occurring on rocks near low-water mark, 

 it is broader, less branched, and of paler colour than when 

 dredged from deeper water. No one in this country has 

 met with fructification. 



XVIII. TAONIA. 



37. atomaria (TJie handed Taonia) ; frond broadly wedge- 

 shaped or somewhat fan-shaped, deeply and irregularly cleft 

 longitudinally ; seeds forming waved transverse lines, with 



