82 I 0LLIN8 WD BERY1 1 - 



branches, elongate, virgate, bearing leaves, fructification, and abort 

 branches; stems slender, terete, densely muriculate with short simple 

 or forked papiUae, which art- occasionally more scattered <>n the older 

 part-: leaves thickly set at the tips of the main branches and along 

 short lateral branches, linear and attenuate to both end-. 1 _' Ti i in. 

 wide, up to.") cm. l'»nu r . simple or forked, margin irregularly dentate with 

 small distant teeth, in young leai es larger and more frequent ; midrib 

 not specially conspicuous; cryptostomata rather large, a single series 

 each side <>t' the midrib, rather irregularly spaced; vesicles : '> 6 nun. 

 diani., smooth, or sometimes with cryptostomata, subspherical on a 

 filiform pedicel <>f uniform diameter, or pyriform on a pedicel enlai 

 above; pedicel smooth, length one and one half to three times the 

 diameter of the vesicle, usually unarmed, occasionally with a small 

 mucro, rarely with a short filiform prolongation. Rachis of fructifica- 

 tion usually short, sterile and filiform, or fertile and torulose, bearing 

 ral alternate, torulose, fertile branches, with subacute tip, one 

 half to one em. long; fructification ino>tly on the lower part of short 



branches of the second order with leaves about them on the branches. 



The above description refers to the attached plant of quiet waters, 

 hut individuals more slender than the typical form can be found, in 

 which the stem is almost entirely smooth and the rachis of fructifica- 

 tion quite elongate. As with other species of Sargassum, individuals 

 are to be found among the masses of S. nutans- floating after storm-, 

 and these show a certain resemblance to the latter, hut their condition 

 shows indications of their not persisting. 



4. S. lendigerum (L.) Agardh, 1820, p. 9; V. B.-A., No. 2178; 

 Fucua lendigenu Linnaeus, L763, p. L628; Turner, 1808, p. L07, PI. 

 XLVII I. South shore, various points, .Ian., Feb., Apr., Dec., Hervev; 

 Little Agar's [sland, Nov., Collins. Common on exposed rocks in 

 shallow water all around the islands. A stout torulose trunk, 1-3 em. 

 high, divides into several main axes, often unbranched, occasionally 

 rather freely branching; axes and branches terete, usually thickly set 

 with short, simple or forked proliferations, rarely over 1 nun. I' 

 leaves ovate or broadly lanceolate, margin irregularly undulate or 

 slightly dentate; occasionally forked, usually much crisped, midrib 

 distinct, cryptostomata small, scattered; vesicles spherical, smooth, 

 usually about 3 mm. diam., occasionally 5 mm., on filiform pedicels 

 usually .shorter than the diameter of the vesicle, rarely with short tips. 

 Fructification of filiform branching receptacles, the main rachis usually 

 distinct, stouter than the radial branches, which may reach a length 

 of 2 em. in the looser forms, hut usually do not reach a length of 1 cm. ; 



