124 BRITISH SEA-WEEDS. 



arranged in whorls round the constrictions of the stem, 

 spreading, the lower ones longest ; branchlets whorled, 

 jointed, beadlike. Spores in globular conceptacles which 

 have a wide pellucid border ; tetraspores in the joints of the 

 branchlets. 



This species is widely distributed. It grows at various 

 depths, either on rocks, sand, or parasitically on other 

 algse, and is annual. It varies much in size and form, 

 according to the circumstances of its growth; but its 

 general characters are constant, and may be readily re- 

 cognised in any but very abnormal specimens. The 

 natural colour is pink ; but it is difficult to obtain spe- 

 cimens in that state, except in spring and early summer. 

 Those which are thrown up later in the year are usually 

 much faded, especially the stems and larger branches, 

 and are frequently of a pale yellow or yellow-green 

 colour throughout. 



Lomentaria reflexa. The reflexed Lomentaria. 



Frond membranaceous, from two to three inches high ; 

 lower branches slender, spreading, irregularly arched, at- 

 tached at intervals by means of small discs ; upper branches 

 undivided, curved, beadlike, tapered towards either end ; 

 branchlets few, scattered, spreading or recurved. Spores an- 

 gular, arranged in a dense mass in spherical conceptacles 

 which have a pellucid border ; tetraspores immersed in the 

 upper part of the secondary branches and branchlets. 



This is the most rare of all the species of Lomentaria, 

 the only recorded British habitats with which I am ac- 

 quainted being the coast of North Devon near Ilfracombe, 

 and Roundstone Bay, Connemara. It has been found 

 on the coast of Normandy, and, therefore, may probably 



