een? a 
330 32.Borrich. 2. THALASSIOPHYT. Pl. cell. aph. 
VII. 32. BORRICHIUS. Borrichius. 
Thallus rose-red, threadshape; branches forked, verti- 
cillate; joimts cylindrical, composed of a single tube; knods 
pellucid; éhece ovate, naked, on the side of the twigs.— 
Gelatinous, marine. 
Borrichius gelatinosus. Gelatinous borrichius. 
Thallus cylindrical, much branched, very gelatinous, 
very pale pink; dranches alternate, very numerous, cylin- 
drical, blunt, recurved. 
Rivularia verticillata, With. Bot. Arr. 4, 1273 Engl. Bot. 2466. 
Sea-coasts; July and August. 
VIII. 33. BATRACHOSPERMUM. B. de St.Vincent. 
Knotweed. 
Thallus green or brown, threadlike, branched ; twigs 
forked, in whirls; joints cylindrical, composed of a single 
tube; knots pellucid; thece 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; ‘wigs in whirls, forked, very 
© 
close; joints ovate, necklacelike. 
Conferva fontana nodosa, spermatis ranarum instar lubrica, major et 
fusca, Dillen in Raii Syn. 62, 26. 
Chara batrachosperma, Weiss Crypt. Gott. 33, 1. 
Chara gelatinosa, Roth Cat. 125. 
Conferva gelatinosa, Lin. Syst. Nat. 2, 720; Dillw. Conf. 32: Engl. 
Bot. 689. 
Batrachosperma ludibunda, B, de S. Vinc. Ane. 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. 
B. purpurascens. Branches more pointed; thallus pur- 
plish blue. 
y. detersum. Twigs wanting; thallus appearing like 
_ naked, knotted threads. 
Conferva fontana nodosa, lubrica; filamentis tenvissimis nigris, Déllen 
Muse. 39. 
Conferva atra, Huds. Angl. 597 ; Dillo. Conf. 11; Engl. Bol. 699. 
Ceramium nodulosum, Agardh Dec. 23. 
Batrachospermum moniliforme detersum, Agardh Syn. 122. 
