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Plcell.aph. 2.THALASSIOPHYTiE. 63. Gastric! . 381
10. Gdstridmm repevs. Creeping^ belly-iveed.
Thallus nearly cylindrical, threadlike, solid, contracted
as if jointed, branched, with a network of internal fibres;
hranches horizontal, pointed ; joints lanceolate, obsolete.
Tremella marina caespitosa, segnienlis tenuibus, Dillen Hist, Muse. 30,
Fucus repeiis, Liglitf. Scot. 961.
Ulva articulata ^, Huds. FL yingl. 369.
Fucus Opuntia, Gooden. Tr. Lin. Soc. 3,219 ; Turn. Hist. 107.
Tlivularia Opuntia, Engl. Bot. 1868.
Sea-shores; annual; summer.
/3. ccBSpitosum. Thallus entangled, half an inch high
tip clublike.
Fucns caespitosus, Stackh. Ner. Brit. 39.
Gigartina pilosa, Lameur. Thai.
c. Lomentaria. Thallus regularly contracted, appearing
as if jointed ; hranches verticillate ; tubercles lateral,
11. Gnstridium articulatum. Jointed belly-weed.
Thallus cylindrical, threadlike, tubular, contracted
throughout as if jointed ; branches level-topped, 2-forked
or whirled; joints nearly cylindrical, piichershape.
Corallina leiita [inrpurea coitipressa, Raii Sj^n. 34,9'.
Ulva articulata, Huds. FL.Angl. 560.
Fucus artieulatus, Liglitf. Scot. 939,
Fucus sericeu?, var. Esper, 82.
Gigartiua articulata, Lamour. Thul. 49.
Casramiuin toruiusum. Roth Cat. 6, 125.
Sea-shores; annual; June and July.
|3. reptans. Thallus slender, creeping, shining.
C»nferva.reptaiis, Roth Cat. 1, 186.
d. Plocamium. Thallus compressed, membranaceous,
mostly pinnate j tubercles lateral.
12. Gastridium glandidosum. Glandular belly-weed.
Thallus membranaceous, linear, compressed (tubular
Engl. Bot.) branched; branches alternate, decumbent;
iivigs 2-cut, bent inwards.
Fucus glandulosus, Turn. Hist. 38; Engl. Bet. 2135.
Delesseria glandulosa, Agardh JOisp. 14.
Thallus 1 or 2 inches long, creeping, variously and repeatedly
branched; sporidia immersed in the oblong, swol-
len twigs.
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