380° 63. Gastrid. 2. THALASSIOPHYT. Pl. cell. aph. 
6. Gastridium dasyphyllum. Thickleaved belly-weed. 
Thallus gelatinous, threadlike; lranches irregularly pin- 
nate, spreading, mostly simple; éwigs cylindrical, scattered, 
narrower at bottom, proliferous. 
-Fucus dasyphyllus, Wuodw. Tr. Lin, Soc. 3, 239; Engl. Bot. 847 ; Turn. 
Flist. 22. 
Gigartina dasyphylla, Lamour. Thal. 
Chondria dasyphylla, Agardh Disp, 18. 
Sea-shore; annual; summer. 
Thallus 3 to 6 inches high, pale red or reddish green. 
8. arlaculatum. Thallus jointed. 
7. Gastridium clavellosum. Twiggy belly-weed. 
Thallus threadlike, cylindrical ; branches many, irregular, 
mostly alternate, 2-rowed. 
Fucus clavellosus, Zurn. in Lins Trans. 4, 10; Hist. 30; Engl. Bot. 1203. 
Gastridium clavellosum, Lyngbye Hydr. Dan. T0. 
Chondria clavellosa, 4gardh Disp. 18. 
Sea-shores, or parasitic; annual; summer. 
é 
8. sedifolium. Twigs 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, Woodw. in Lin. Tr. 3,206; Turn. Hist.29; Engl. 
Bot. 640. 
Fucus verticillatus, Lightf. Scot. 962. 
Gigartina kaliformis, Lamour. Thal. 49. 
Ceramium tubulosum, Roth Cat. 3, 124. 
Chondria kaliformis, 4gardh Disp. 18. 
Gastridium kaliforme, Lyngbye Hydr. Dan. TO. 
Sea-shore; annual; summer. 
Thallus solitary; branches opposite, alternate, or in 
whorls, slender at bottom, blunt at top. 
B. diaphanum. Thailus 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; lranches many, irregular; twigs horizontal ; 
bottom slenderest; tips dilated, roundish. 
Fucus pusillus, Stackh. Ner. Brit. 16; Turn. Hist, 108. 
Spherococcus: pusillus,. .dgardh Disp, 17. 
Sea-shores; annual; summer. 
