ACOTYLEDONS. ALG-JE. SpharOCVCCl/S. 101 



HAH. Upon sea-rocks, frequent, in basins of water left by the recess 



of the tide, Light/. 

 Fronds 4 6 inches long. Colour a deep red rose colour, with very 



dark veins. 



4. D. lacerata, frond membranaeeous very tender plane veiny 

 mostly dichotomous, branches sublinear their apices rounded 

 margins lacinulated and waved, hemispherical tubercles im- 

 mersed in the frond and naked seeds collected into oblong clus- 

 ters. Fucus laceratn.1, Turn. Hist. Fuc. t. 68. E. B. t. 1067. 

 F. endivifoliui) Light f. p. 948. t. 32. 



HAB. Firth of Forth and the coast of lona, Lightf. Orkney, Mr. 



Chas. Clauston. 



Rose colour, sometimes inclining to. tawny ; 4 6 inches long. 

 ** Veinless. 



5. D. cocdnea, frond compressed between membranaeeous and 

 cartilaginous much and irregularly branched, ramuli subulate 

 disposed in alternate parcels of three or four each, sphserical 

 sessile capsules and lanceolate pods. Turn. Fucus cocci?ieus 9 

 Turn. Hist. Fuc. t. 59. E. B. /. 1242. Fucus Plocamium, 

 Lightf. p. 957. 



HAB. Sea-rocks, in basins of water left by the recess of the tide, fre- 

 quent, Lightf. 

 From 3 to 6 inches, or even a foot long, very much branched, crimson. 



6. D.pimctata, frond membranaeeous very tender flat nerveless 

 mostly dichotomous, segments nearly linear bifid and obtuse at 

 their apices, at their margins flat and entire, hemispherical 

 immersed tubercles scattered all over the frond and naked seeds 

 collected into oblong spots. Turn. Fucus punclatus, Turn. 

 Hist. Fuc. t.7\, E.B.t. 1573. 



HAB. Upon the shore at Wick, in Caithness, among rejectamenta, 

 Mr. Borrer and Hook. 



From 2 to 6 inches long, and from 1 to 2 or 3 inches broad, pink co- 

 loured, or sometimes almost red, very thin and membranous, and 

 elegantly spotted with fructification, reticulated. 



7. D. ulvoides, frond membranaeeous very tender flat nerveless 

 lobed, lobes obtuse flat and quite entire at their margins, tu- 

 bercles hemispherical umbonated immersed in the frond and 

 scattered all over it. Turn. Fucus ulvoides, Turn. Hist. Fuc. 

 /.SO. E. B. t. 2134. 



HAB. Shores of Moray, James Brodie, of Brodie, Esq. Orkney Islands, 



Mr. Chas. Clauston. 

 3 or 4 inches long, of a broadly ovate figure, almost orbicular, reddish 



rose colour. 



28. SPFLEROCOCCUS. 

 Fruit uniform, capsule s. Fronds confluent in all their parts, plane 



or filiform, nerveless, cartilaginous. Fruit tubercles or capsules 



sessile upon the di*>k of the frond, or marginal and pedicellate. 



