394- 78. Siliquar. 2.THALASSIOPHYT^. Pl.celLaph . 
LIII. 78. SILIQUARIA. Podweed. 
Phallus compressed, ribless, branched ; vesicles pedicel! ed, 
lanceolate, jointed; sporidia intermixed with jointed fibres 
in roundish thecae in terminal lanceolate podshaped apo- 
thecia. 
Siliquaria angustifolia. PI arrow-leaved podweed. 
T/iallus branched; branches alternate, 2-rowed ; vesicles 
beaked. 
Fucus angustifolius vesjculis longis siliquarutn semulis, Raii Syn. 49,39. 
Fucus siliquosus, Lin. S. F. 1629 ; Engl. Bot. 474 ; Turn. Hist. 159. 
Halymenia siliquosa, Lyngbye Hydr . Dan. 37. 
Sea-shore; perennial; winter. 
/3. minor. Thallus not more than 6 or 9 inches long. 
Fucus siliquosus, Stackh. Ner. Brit. 
y. denndata. Thallus long, much branched; vesicles 0. 
LIV. 79. FURCELLARIA. Lamouroux. Fork-weed . 
Thallus threadlike, forked, level-topped ; sporidia im- 
mersed in regular lines in the swollen tips of the twigs. 
Flagellaria luhricalis. Slippery fork-weed. 
Thallus threadlike, forked, angles acute, tips blunt. 
Fucus parvus scgtnenlis prcelongis teretibus acutis, Raii Syn. 45,24. 
Fucus iubricalis, Gmelin, 108 ; Engl. Bot. 824 ; Turn. Hist. 6. 
Fucus fastigiatus, Stackh. Ner. Brit. 15. 
Fucus furcellatus, Huds. FI. Angl. 589. 
Furcellaria Iubricalis, Lamour. Thai. 
Sea-shore; perennial; Nov. Feb. 
(3. fastigiata. Twigs compressed, transparent, ovate, 
lanceolate, short, pointed. 
Fucus sive alga exigua dichotoma, foliorum segmenlis longiusculis, 
crassis et subrot undis, Raii Syn. 45, 25. 
Fucus fastigiatus, Huds. FI. Angl. 588. 
Furcellaria fastigiata, Lamour. Thai. 
Fam. III. 3. HOMOTHALAMEiE. Lichenes homotha - 
lami. Acharius, 
Thallus leatherlike, cartilaginous or shrubby; sporidia 
scattered, innate throughout the whole thallus, or in apo- 
thecia of the same colour and substance as the thallus with- 
out any proligerous skin or central nucleus . — Terrestrial 
or parasitic, perennial, greenish or becoming so when 
grazed, absorbing water at the surface and transmitting it 
to every part. 
