PL cell. aph. S.THALASSIOPHYTiE. 69.Sporoch. 387 
XLIV. 69. SPOROCHNUS. Agardh. Sporochnus * 
Thallus threadlike, cartilaginous ; branches pinnate ; spo- 
ndia scattered in the ovate or globular ends of the twigs? 
which end in jointed radiating filaments. 
1 . Sporochnus pedunculatus. Foot stalked sporochnus . 
Thallus cartilaginous, threadlike; branches irregularly 
pinnated, mostly alternate, elliptical. 
Fucus pedunculatus, Huds. FI. Angl. 5S7 ; Turn . Hist. 188 ; Engl. Bat . 
545. 
Fucus Gsertneri, Gmelin, 164. 
Gigartina pedunculata, Lamour. Thai. 
Sporochnus pedunculatus, Agardh Disp. 12. 
Sea-shores. 
2. Sporochnus villosus. Villous sporochnus . 
Thallus cartilaginous, threadlike ; branches opposite, dis- 
tant, pinnate, spreading; twigs elliptical. 
Conferva villosa, Huds. FI. Angl. 60S ; Engl. Bot. 546 ; Dillw . 37 ? 
Chordaria? villosa, Agardh Syn. 14. 
Sea-shores; annual. 
XLV. 70. DESMARESTIA. Lamouroux. DesmaresL 
Thallus compressed, pinnately branched ; twigs slenderest 
at bottom ; edges serrate ; holdfasts shieldlike ; sporidia 
along with jointed threads from the serrated edges of the 
twigs. 
1 . Desmarestia acuieala. Prickly desmarest . 
Thallus woody at the bottom, cylindrical, very much 
branched ; branches flat, cartilaginous, linear, ribless, re- 
peatedly branched; twigs pinnate; edges spinose; spines 
upright. 
Fucus angustifolius, foliis dentatis, R'aii Syn. 48, 3S. 
Fucus aculeatus, Lin. S. P. 1632; Turn. Hist. 187 ; Engl. Bot. 2445. 
Fucus muscoules, Gmelin, i 30. 
Fucus virgatus, FI. Norv. 45. 
Fucus contortus, Esper , 43. 
Fucus usneoides, Oeder Enunt. 113. 
Desmarestia aculeata, Lamour. Thai. 25. 
Sporochnus aculeatus, Agardh Syn. 10. 
Desmia ligulata, Lyngbye Hydr. Han. 34. 
Sea-shores; perennial; winter. 
Thallus obsoletely contracted, olive-green becoming 
black. 
2 c 2 
