380 63. Gastrid. 2.THALASSIOPHYTbE. PL cell. aph. 
6. Gastridium dasyphyllum. Thickleaved belly -weed. 
Thallus gelatinous, threadlike; branches irregularly pin- 
nate, spreading, mostly simple; twigs cylindrical, scattered, 
narrower at bottom, proliferous. 
Fucus dasyphyllus, JVoodvc. Tr.Lin. Soc. 3, 239; Engl. Bot. 847 ; Turn . 
Hist. 22. 
G'gartina dasyphylla, Lamour. Thai. 
Ctiond rla dasyphylla, Agardh Disp. 18. 
Sea-shore; annual; summer. 
Thallus 3 to 6 inches high, pale red or reddish green. 
<3. articulatum. Thallus jointed. 
7. Gastridium clavellosum. Twiggy belly-iveed . 
Thallus threadlike, cylindrical ; branches many, irregular, 
mostly alternate, 2- rowed. 
Fucus clavellosus, Turn, in Lin. Trans. 4, 10 ; Hist. 30 ; Engl. Bot. 1203. 
Gastridium clavellosum, Lyngbye Hydr. Dan. 70. 
Chorulria clavellosa, Agardh Disp. 18. 
Sea-shores, or parasitic ; annual; summer. 
0. sedifolium. Tivigs oblong, oval, crowded, undivided. 
8. Gastridium kaliforme. Kali- like belly-weed . 
Thallus threadlike; branches many, irregular, generally 
in whorls, contracted as if jointed. 
Fucus kaliformis, fVoodio. in Lin. Tr. 3,206; Turn. Hist. 29 ; EngL 
Bot. 640. 
Fucus verticillatus, Lightf. Scot. 962. 
Gigartina kaliformis, Lamour. Thai. 49. 
Ceramium tubulosum, Roth Cat. 3, 124. 
Cliondria kaliformis, Agardh Disp. 18. 
Gastridium kaliforme, Lyngbye Hydr. Dan. 70. 
Sea-shore; annual; summer. 
Thallus solitary; branches opposite, alternate, or in 
whorls, slender at bottom, blunt at top. 
j3. diaphanum . Thallus roundish ; twigs long, generally 
simple ; contractions very slight. 
y. nanum. Threads long, jointed; branches and twigs 
horizontal. 
9. Gastridium pusillum . Dwarf belly-weed . 
Thallus cartilaginous, compressed, threadlike, contracted 
as if jointed; branches many, irregular; twi gs horizontal ; 
bottom slenderest; tips dilated, roundish. 
Fucus pusillus, Staclch. Ner. Brit. 16 ; Turn ^ . Hist. 108. 
Sphserococcus pusillus, Agardh Disp. 17. 
Sea-shores; annual; summer. 
