384 65. Lamina. ^.THALASSIOPHYTiE. I Pl.cell. aph. 
XL. 65. LAMINARIA. Flake-weed. 
Thallus flat, leatherlike, ribless; stirps roundish; hold- 
fasts fibrous; sporidia placed horizontally in superficial 
mucilaginous warts, formed of jointed filaments. 
1. Laminaria membranacea. Membranaceous flake-weed. 
Stirps roundish, compressed ; thallus flat,, linear, lanceo- 
late, narrower at both ends ; edge cut. 
Fucus Phyllitis, Esper , 149; Turn. Hist. 164; Engl. Hot. 1331. 
Uiva Phyllitis, De Candolle FI. Fr. 2, 15. 
Laminaria Phyllitis, Lamour. Thai. 22. 
Sea-shore; parasitical; annual. 
Thalli mostly aggregate; edge not cut. 
2. Laminaria saccharin a. Sugar fake-weed. 
Stirps roundish; thallus fiat, linear, lanceolate, edge not 
divided. 
Fucus lo-ngis*imo, latissimo, crassoque folio, Dillen in Rail Syn , 39, 1. 
Focus saccharin us, Lin. S. P. 1630. 
Ulva saccharina, De Cand. FI. Fr. 2, 15. 
Phasgonon balteiformis, Walk. 
Laminaria saccharina, Lamour. Thai. 22. 
Sea-shores ; perennial ; summer. 
/3. bullala. Thallus bullated ; edge waved. 
Fucus latissimus et longissimus, oris crisp us, Dillen in Raii Syn. 39, 1. 
Fucus folio singulari, longissimo, lato, in medio rugoso,qui balteiformis 
dici potest, Raii Syn. 39, 1. 
Ulva latissima, Lin. Syst. Nat. 719. 
Fucus saccharin us, FI. Dan. 416 ; Engl. Bot. 1376. 
Ulva mesenteriformis, Roth Cat. 1,210. 
y. longissima. Thallus oblong, membranaceous, pointed. 
Ulva longissima,. FI. Norv. 2, 128. 
3. Laminaria latissima. Broadest flake-weed. 
Stirps short, roundish ; thallus expanded, flat, ribless, 
elliptical, orbicular, mucilaginous. 
Ulva maxima, FI. Norv. 2, 7. 
Fucus saccharinus latissimus, Turn. Hist. 163- 
Laminaria saccharina latissima, Jgardh Syn. 18. 
Sea-shore. 
Thalli gregarious, yellowish, nearly as broad as long. 
3. Laminaria digitaia. Fingered flake-weed. 
Stirps roundish ; thallus expanded into an oval, heart- 
shape, cut in many short, shallow lobes; edge not cut. 
