310 25. Conferva. 1 . HYDROPHYTjE. PLcell, aph* 
b. Threads greenish , simple. 
27. Conferva P ecliinulala. Hedgehog-like crow silk. 
Threads simple, very short, blunt, spreading every way 
from a centre, and forming a globe, glaucous green; joints 
as long as broad. ' 
Rivularia echinulata, Engl. Bot. 1378. 
Floating on lakes. 
Threads rather clubshape ; joints about 5 or 6. 
28. Conferva sordida. Dirty crow silk. 
Threads simple, very slender, cobweblike, tenacious, yel- 
low green ; joints 4 times longer than broad; knots pellucid. 
Conferva sordida, Roth Cat. 1,171; Engl. Bot. 2303. 
Conferva caljcina, Agardh Syn. 78 ? 
Stagnant water adhering to grass; April to July. 
Mass cloudlike, yellowish green; threads shining, curved; 
hyaline, equal. 
Q.fuscata. Threads very slender, very closely entangled 
into a light brownish cloud. 
y. utriculata. Threads very slender; granules collapsed 
into several, distinct, oblong globules in each joint; knots 
here and there contracted. 
29. Conferva Jloccosa. Flocklike crow silk. 
Threads simple, very slender; joints about twice as long 
as broad, hyaline with a pellucid, globular spot in the 
centre. 
Prolifera floccosa, Voucher , 131. 
Conferva floccosa, Agardh Dispos, 29. 
Ditches and running water. 
Tufts straight, 2 or 3 inches long. 
30. Conferva fngacissima. Fugacious crowsilk . 
Threads simple, very slender, slimy, rather straight ; 
joints rather longer than broad, with a granular band in 
the middle. 
Conferva fngacissima, Roth Cat. 3, 176. 
Ditches adhering to grasses. 
31. Conferva oscillatorioides. Oscillatoria crowsilk. 
Threads simple, cobweblike, very slender, very long; 
joints longer than broad, with a granular band in the 
middle. 
