4 A Zn 
AR 
BSR! 
a WM 
variety of E. granulosus, Ag.; however this may be, it 
cöincides with neither; besides affecting fresh water, it is 
much more rigid and robust, and the articulations of the 
stem are shorter, usually less than half the diameter, 
Oedogonium acrosporum, D.B,, var. longatum, 
n» var. — Diameter of filament 7—8 a; much more slender 
than in the forms described, and the cells more elongated, 
averaging twice 'the usual length, 5—11 times longer than 
broad. 
Oed. echinospermum, A. Br., var. spermogonio- 
multicellulare,n. var.—Gynandrosporous, oospores globose, 
echinulate, spines very slender, dense and long. Andro- 
sporangia 2—5-celled; dwarf males with spermogonia 8— 
10 -celled. ‚Fils. 26— 30 u; oogon. 50 u; stipes of males 
18 u; spermog. cells 15 a. 
collected finely developed specimens of this. new 
Winter Park, Florida, March, 1885. 
‚ .Ded. cataractum, n. sp. — Idioandrosporous; oogonia 
often terminal, single or twin, obovate or subglobose, or broadly 
oyal, pore in upper part; oospore globose or egg-shaped 
globose, nearly filling the oogonium; androsporangia 2— 6- 
celled; dwarf males somewhat curved, seated on or some- 
times below the supporting cell; spermogonia one - celled. 
Veg. cells 23—38 4 long, 1.5—3 u diameter, Oogon. 55—60 u 
long, by 60—75 u. Oosp. 50—55 u long, by 50—60 u. Cell 
andro, 26—30 x long, by 10—15 u. Stip. dw. males 10 u 
long, by 65 u. 
Rapid stream below High Falls, Dingman’s Ferry, 
July, 1885. 
Cladophora aegagropila, Linn., var. thermalis, 
n. var. — Ülusters attached, 1,5—2 cm. in diameter, dark 
green; filaments rigid, much branched, more or less radiating 
rom. & common centre; branching lateral, erect patent, 
often enlarged towards the ends; articulations long, 10-20 
diameters. 
„In manner of growth it has the appearance of C, 
lomerata, var, pumila, Bail., but the branching is 
ateral immediatel Ealor the apex, and not terminal as in 
that species, It has much in common also with sterile 
Pithophora. Comparing with European specimens of 
Aegagropila, this is a fair representation, but it may be 
well to continue observations on fresh specimens in different 
seasons of the year for complete identification. The plant 
was found attached to the planked sides of the outlet of the 
Jarge sulphur springs at Green Cove Spring, Florida, also 
t 
\ 
variety in lakes at 
