384 65. Lamina. 2. THALASSIOPHYT As. Pi. cell. aph. 
XL. 65: LAMINARIA. Flake-weed. 
Thallus flat, leatherlike, ribless;, sttrps roundish; hold- 
_ fasts fibrous; sporidia placed horizontally in superficial 
mucilaginous warts, formed of jointed filaments. 
1. Laminaria membranacea. Memlranaceous jlake-weed. 
Stirps roundish, compressed ; thallus flat, linear, lanceo- 
late, narrower at both ends; edge cut. 
Fucus Phyllitis, Esper, 149; Turn. Hist. 164; Engl. Bot, 1331. 
Ulva Phyllitis, De Candolle Fl. Fr. 2,15. 
Laminaria Phyllitis, Lamour. Thal, 22. 
Sea-shore; parasitical; annual. 
Thalli mostly aggregate; edge not cut. 
2. Laminaria saccharina. Sugar flake-weed. 
Stirps roundish ; thallus flat, lmear, lanceolate, edge not 
divided. 
Facus lonsissimo, latissimo, crassuque folio, Déllen in Raii Syn. 39, }. 
Fucus saccharinus, Lin. S. P. 1630. 
Ulva saccharina, De Cand. Fl. Fr. 2, 15. 
Phasgonon balteiformis, Walk. 
Laminaria saccharina, Lamour, Thal. 22. 
Sea-shores; perennial: summer. 
8. bullaita. Thallus bullated ; edge waved. 
Fucus latissimus et Jongissimus, oris crispus, Dillen in Rati Syn. 39,1. 
Fucus folio singulari, longissimo, lato,'in medio rugoso, qui balteifermis 
-dici potest, Raii Syn. 39,1. 
Ulva latissima, Lin. Syst. Nat. 719. 
Fucus saccharinus, Fl, Dan. 416; Engl. Bot. 1376. 
Ulva mesenteriformis, Ret# Cat. 1, 210. 
y. longissima. Thallus oblong, membranaceous, pointed. 
Ulva longissima, Fl. Norv. 2,128. 
3. Laminaria latissimau. Broadest flake-weed. 
Stirps short, roundish; thallus expanded, flat, ribless, 
elliptical, orbicular, mucilaginous. 
Uiva maxima, Fl. Norv, 2,7. 
Fucus saccharinus latissimus, Turn. Hist. 163. 
Laminagia saccharina latissima, 4gardh Syn.18. 
Sea-shore. 
Thalli gregarious, yellowish, nearly as broad as Jong. 
3. Laminaria digitata. Fingered flake-weed. 
Stirps roundish; ihallus expanded into an oval, heart- 
shape, cut in-many short, shallow lobes; edge not cut. 
