Ph, cell.aph. 2. THALASSiOPHY TS. 37. Hutchin. 337 
11. Hutchinsia nigra. Black hutchins. 
Threads byanchicds reddish* black; branches long; twigs 
short, awlshape, Head generally many-cut, nearly pencil- 
shape; joints of the oa longer than bread, of the twigs 
as long. 
nave nigra, Huds. Fl. Angl. 595; Engl. Bot, 2240; Dillw, Syn. 86. 
Conferva. atrorubescens, Diillw. Conf. 70. 
Hutchinsia atrorubescens, 4garan Syn. 58. 
Sea-coasts; July. 
Plant black when dry ; joints composed of 8 or 10 veins ; 
ihece ovate, sometimes pedicelled. 
12. Hutchinsia denudata. Naked hutchinste. 
Threads very much branched, spreading, brownish ; 
branches scattered, divaricating, long, distant; joints rather 
longer than pepe: 
Conferva denudata, Dillo. Syn. 85. 
Hutchinsia divaricata, dgardh Syn. 59? 
Sea-shore. 
Thallus 2 to 4 inches long; threads repeatediy branched ; 
tranches issue almost at right angles; ‘wigs pointed, very 
long, slender. 
13. Hutchinsia Griffithsiana. Griffiths hutchins. 
Threads repeatedly branched, pale red’; branches spread-. 
ing; twigs solitary or cluster ed, very shor t, simple, awl- 
shape ; joints as long as broad; thecée on the twigs, some- 
times aggregate. 
tole te) 
Conferva Griffithsiana, Engl, Bot. 2312. 
Sea-shores; March. 
Thallus 3 or 4 inches high, when dry dark brownish 
green, when in decay light green. 
14. Hutchinsia byssoides. Byssus hutchins. 
Threads more than twice pinnated, weak, red; segments 
and lobes alternate; /oles gradually smaller, many-cut, 
peneilshape; Jower joints long, upper short; Hicae sessile. 
Fucus byssoides, Zr. Lin. Soc. 3, 229. 
Conferva ee Engl. Bot. 347; Dillw. 58. 
Ceramium molle, Reith Cat. 3,138. 
Ceramium byssoides, Agardh Disp, 20. 
Hutchinsia byssoides, ¢gardh Syn. 60. 
Sea-shore; August. 
As = ¢ ore a 
Main thread coe jointed,, composed: of many pa- 
rallel veins; ¢wigs in bundles, short, rose-red. 
VOL. I. Zz 
