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580^ ea.Gastrid. 2.THALASSI0PHYTiE. PlcellapH.
6. Gastridium dasyphyllum. Tlnckleaved helly-weed.
T/^aZ/z« gelatinous, threadlike; branches irregulai'ly pin-
nate, spreading, mostly simple; tjvigs cylindrical, scattered,
narrower at bottom, proliferous.
-Fucus dasyphjllus, WuGdw. Tr. Lin. Soc. 3, 239 ; Engl. Bot. 847 ; Turn.,
Hist. 22.
Gigarirna dasyphylla, Lmnour, Thai.
Clundria dasyphyUa, Agardh Disp, IS.
Sea-shore; annual; svunmer.
Thallus 3 to 6 inches high, pale red or reddish green.
i3. ariiculatum. Thallus jointed.
7. Gastridium clavellosum. Twiggy belly-iveed.
Thallus threadlike, cylindi'ical ; branches many, irregular,
mostly alternate, 2- rowed.
Fucus clavellosu?, IWn. in Lin:Trans. 4, 10 ; Hht. 30 ; Engl. Bot. 1203.
Gabtridium clavellosum, Lyngbye Hydr. Dan. 70.
Choiulria clavellosa, Agardh Disp. IS.
Sea-shores, or parasitic ; annual; summer.
/3. 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, fVoodw. in Lin. Tr. .3,206; Twn.Hist.29; Engl.
Bot. 640.
Fucus verticillalus, Lightf. Scot. 962.
Gigartiiia kalifi)rtnis, Lamvur. Thai. 49.
Ceramii!m tubulosum, Roth Cat. 3, 124.
Chondria 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.
|3. diaphanum. Thallus roundish ; tiuigs long, generally
simple ; contractions very slight.
7. nanum. Threads long, jointed; branches and twigs
horizontal.
9. Gastridium piisillum. Dwarf belly-weed,
Thallus cartilaginous, compressed, threadlike, contracted
as if jointed ; branches many, irregular ; twigs horizontal j
bottom slenderest; tips dilated, roundish.
Fucus pusillus, Stackh. Ner. Brit. Ifl ;
Sphserococcus pusillus, Agardh Disp. 17.
Sea-shores; annual; summer.
'Turn. Hist. 108.