13 
second divisions or lateral rays; 2a, the one-celled terminals of 
these rays, usually, in the fertile verticils, two in number, and 
always one-celled. EE, a single lateral ray, with one antheridium 
and three sporophydia. 
Sporophydia (Fig. F) clustered on the nodes of ‘the (ives 
and lateral rays, and more rarely in the fundus of the verticil, not 
stipitate. Coronula persistent, and nucleus smooth, with 5-6 
Stria, 210-215-. long, 200-210 broad; antheridia 130 m. in 
diameter. 
Collected in “ August, 1882, in a pool on the shore of Niagara 
River, above the Falls,” by Prof. Macoun. The description of 
this species has been delayed in the hope of obtaining more 
Specimens (two only were gathered), but visits to the locality 
have been unsuccessful; but the species will doubtless be re- 
discovered. 
This is one of the most remarkable 7o/yfel/e that has yet been 
described, from the fact that the terminal cells of the fruiting rays 
are one-celled. No other species has such simple terminals ; no 
Species has so little fruit and such imperfectly formed nests. It 
is nitella-like in its habit of growth, slightly incrusted, and alto- 
gether unique. : 
CHARA SuccinctTa, A. BR. (or a closely allied species.)— 
a (PLATE LXXIV.) 
A fragment of Chara collected in the island Mauritius and 
Communicated by Miss F. E. Hitchcock, presents points of great 
interest in the following respects : 
It is wholly devoid of cortex, and is perfectly free of incrus- 
tation. The stems are long and slender, perfectly diaphanous, 
0.400 mm. in diameter. 
Verticils distant, with very short incurved leaves. 
Stipules opposite the leaves very short or obsolete. 
Leaves with three nodes: the first segment 0.830 long, the 
second 0.700, the third 1.070 (average of several measurements) ; 
the terminal segment single, large, not mucroform. Bracts ver- 
ticillate, generally very short posteriorly ; anterior bracts as 
long as diam. of antheridium. Sporophydia (Sporangia) numer- 
Ous in the fundus of the verticil (generally one opposite each 
