DRAPARNALDIA 221 
Batrachospermum glomeratum Vauch. Hist. Conferv. 114. ۰ 
72 f. t. 1803.  Dekand, Plor. Franc. 2: $9. 1815; 
Conferva Chara Roth, Cat. Bot. 3: 285. 1806. 
Conferva mutabilis Eng. Bot. pl. 7740. 1807. 
Draparnaldia mutabilis Bory, Ann. Mus. Hist. Nat. 12: 402. 
pl. as f. t 5. d, 1808, 
Generally densely tufted, 1-8 cm. long ; filaments repeatedly 
branched, branches spreading or horizontal, solitary or opposite, 
moniliform, bearing very numerous scattered, opposite, or whorled 
fascicles of branchlets, fascicles mostly set at right angles to the 
branch and often sessile, broadly orbicular to elliptical in outline, 
their branchlets spreading, the rachis of the fascicle disappearing 
in the ramification or at least not more prominent at the summit 
than other branchlets, ultimate branchlets densely crowded, subu- 
late, often setiferous; cells of larger branches strongly inflated, 
50-90 or sometimes 125 م‎ in diameter, their length about equal 
to (14-2 times) the diameter; chlorophyll band rather narrow or 
half as broad as the diameter, proportionately broader or even 
filling the cell in the smaller branches; diameter of terminal 
branchlets 6-9 ۸ (Pl. go, f. 3, 4). 
Exsic.: Phyc. Bor. Am. 20, Bridgeport, Conn. (I. Holden). 
Tild. Am. Ale 77, St. Paul, Minn., September 1894. 
Attached to grass, sticks, stones and earth, in active or quite 
waters. 
VERMONT: St. Johnsbury, April (671), July (684), October 
(649). | 
MassACHUSETTS : Melrose, April (552); Rowley, May (556) ; 
Worcester, 1887 (G. E. Stone). 
Connecticut: Thomaston, May (544, 545). 
New York: Bronx Park, April (14, 80, 270, 338, 339); Van 
Cortlandt Park, April (79, 342). 
New Jersey: Grantwood, Bergen county, March (4,62), April 
(91), May (364); Hudson Heights, March (70), April (303). 
This species is very well distinguished from D. plumosa and 
D. acuta by its broadly rounded fascicles of branchlets, in which 
the rachis is quickly lost in the branching. 
The forms known as D. glomerata distans (Kitz.) Hansg., 
and D. glomerata remota Rabenh. appear to be no more than 
growth stages of the species. The description of D. glomerata 
maxima Wood, Hist. F. W. Alg., contains no feature that dis- 
