Pl. cell. aph. 2. THALASSIOPHYT 2. 76. Mackaia. $93 
Fucus granulatus, Lin. S. P. 1629; Engl. Bot, 2169. 
Fucus mucronatus, Turn. Syn. 73; Hist. 251. 
Fucus radicaulis, Vither. Bot, Arr. 4, 111. 
Sea-shore; perennial; Feb. and August. 
6. Mackaia ericoides. Fleathlike mackay. 
Thallus cylindrical and naked at bottom; branched at 
the tip; branches variously divided, long; twigs mostly 
simple, awlshape, imbricate, spreading; vesicles roundish. 
Fucus foliis eric seu tamarisci, Raii Syn. 49, 44. 
Fucus ericoides, Lin. S. P. 1631; Engl. Bot. 1968; Turn. Hist, 191. 
Fucus tamariscifolius, Huds. Fl. Angl. 576. 
Fucus Erica marina, Gmel, 128. 
Fucus selaginoides, Lin. Mant. 134. 
Sea-shore; perennial; summer. 
Thallus reflects bright tints when in a growing state. 
LIl. 77. BACCALARIA. Gulf-weed. 
Thallus distinct as to its parts; holdfasts shieldlike; stirps 
threadiike, much branched; branches mid-ribbed, mem- 
branaceous, often pierced with holes, dilated at the tip, 
edges serrate; vesicles spherical, peduncled, awnless or end- 
ing in a round or dilated awn; sporidia in roundish thecee 
intermixed with jointed fibres immersed in axillary, soli- 
tary or racemous apothecia. 
1. Baccalaria natans. Floating gulf-weed. 
Thallus compressed, bipinnated ; branches alternate, 
simple; twigs linear, lanceolate, serrated ; vesicles spheri- 
cal; peduncles flat; apothecia cylindrical, racemose. 
Fucus natans, Lin. S. P. 1628; Engl. Bot. 2114; Turn. Hist. 46. 
Sea-shores; perennial; summer. 
Thallus alternately bipinnate, twigs blunt, smooth. 
2. Baccalaria teres. Cylindrical gulf-weed. 
Thallus cylindrical, threadlike, bipinnate; branches al- 
ternate, mostly simple; twigs linear, serrated ; vesicles sphe- 
rical; peduncles cylindrical. ; 
Fucus natans, Huds. Fl. Angl. 572. 
Fucus bacciferus, Turn. Syn. 55; Hist. 27; Engl. Bot. 1967. 
Sea, floating in large masses; perennial; winter. 
8. oblongifolius. Twigs oblong, blunt, large toothed. . 
