330 32. Borrich. 2.THALASSIOPHYT,E. PL cell. aph. 
VII. 32. BORRICHIUS. Borrichius. 
Thallus rose-red, threadshape; branches forked, verti- 
cillate ; joints cylindrical, composed of a single tube ; knots 
pellucid ; thecce ovate, naked, on the side of the twigs.— 
Gelatinous, marine. 
Borrichius g elatinosus. Gelatinous borrichius . 
Thallus cylindrical, much branched, very gelatinous, 
very pale pink ; branches alternate, very numerous, cylin- 
drical, blunt, recurved. 
Iiivularia verticillata, With. Bot. Arr. 4, 127 ; Engl. Bot. 2466. 
Sea-coasts; July and August. 
VIII. 33. BATRACHOSPERMUM. B. de St.Vincent. 
Knot weed. 
Thallus green or brown, threadlike, branched ; twigs 
forked, in whirls ; joints cylindrical, composed of a single 
tube ; knots pellucid ; thecce ovate, naked, on the side of 
the twigs. — Very gelatinous, beadlike, appearing like a 
dotted picture when dry, in marshes. 
1. Batrachospermum moniliforme. Necklace knot-weed. 
Thallus much branched, forming tufts, attenuated ; 
branches alternate, spreading; twigs in whirls, forked, very 
close; joints ovate, necklacelike. 
Conferva fontana nodosa, spermatis ranarum instar hibrica, major et 
fusca, Dillen in Rail 8yn. 62,26. 
Ctiara batrachosper ma, Weiss Crupt. Gott. 33, 1. 
Chara gelatinosa, Roth Cat. 125. 
Conferva gelatinosa, Lin. Syst. Nat. 2, 720; Billie. Conf. 32: Engl. 
Bot. 6S9. 
Batrachosperma ludibunda, B. de S. Vine. Ann. Mus. 12,310. 
Batrachospermum moniliforme, Roth Germ. 3,480. 
In clear rivulets and springs, on pebbles. 
Thallus 1 to 3 inches long; lower joints very long, upper 
shorter. 
£. purpurascens . Branches more pointed ; thallus pur- 
plish blue. 
y. deter sum. Twigs wanting ; thallus appearing like 
naked, knotted threads. 
Conferva fontana nodosa, lubrica; filamentis tenuissimis nigris, Dillen 
Muse. 39. 
Conferva atra, ffuds. Angl. 597 ; Dillw. Conf. 11 ; Engl. Bot , 690. 
Ceramium nodulosum, Agariih Dec. 23. 
Batrachospermum moniliforme detersum, Agardh Syn. 122. 
