$08 25.Conferva. 1. HYDROPHYTA. Pl. cell. aph. 
18. Conferva Hutchinsia. Hutchins’ crowsilk. 
Threads: very much branched, bent, rather cartilaginous, 
brittle, glaucous green ; branches and twigs scattered, smallest 
4-rowed, adpressed ; joints torulose, twice as long as broad. 
Conferva Hutchinsia, Dilhoyn, 65. 
Conferva centralis, Lyngbye Hydr. Dan. 161? 
Sea-shores; spring. 
19. Conferva nana. Dwarf crowsilk. 
Threads pale reddish green, branched, very minute, in 
tufts; lranches and twigs alternate, pointed, remote; joints 
2 or 3 times as long as broad; knots obscure. 
Conferva nana, Dillwyn, 30. 
On fontinalis antipyretica, in alpine rivers. 
Tufts about half an inch long, pale reddish. 
20. Conferva vint. Wine crowsilk. 
_ Tufts brownish yellow; threads hyaline, much branched, 
entangled; lranches attenuated, acute, twice as long as 
broad. 
Conferva vini, dgardh Syn. 72, 
In Madeira wine. 
Tufts cloudlike, floating, an inch broad, brownish yellow ; 
threads very slender indeed. 
21. Conferva stellaris. Starry crowsilk. 
Threads hyaline, arising parallelly from an orbicular 
basis, very minute, equal. : 
Conferva stellaris, Fl. Dan. 660. 
On the inside of glass bottles. 
Shoots green, about a line in diameter, edges stellate; 
threads about an inch long, branched; branches remote, al- 
ternate; joints 4 or 5 times as long as broad. 
22. Conferva egagropilaris. Hairball crowsilk. 
Threads arising from a common centre, forming a globe, 
much branched; branches rather crowded, blunt; joznts 
4 times as long as broad; rather swollen above. 
Conferva Hgagropila, Lin, Sp. Pl. 1637; Engl. Bot. 1317. 
Moor balls. 
Bottom of alpine lakes. 
Balls dark green, from the size of a pea to 3 inches 
diameter, exactly spherical, hollow; branches rather spread- 
ing; knots pellucid, when dry contracted. 
