32 
No. 186. B. hypnoides. Lamour. Much branched, the branches long, slen¬ 
der, ramuli capillary irregular, somewhat erect. 
Summer and autumn, at Castle Garden, Staten Island, and other places, on rocks at low water mark; 
plenty, but not so abundant as the preceding. 
Family XV. COHFERVEJB. J. Ag. 
Green, with few exceptions, composed of articulated threads or filaments, cells 
polygonal, cylindrical; fructification as far as known, zoospores from the articulations 
cells, or filiform branched or flat, expanded, or cleft. 
Genus, CLADOPHORA. Koitz. 
Filaments composed of a single series of cells or articulations, much branched 
and tufted; fruit, zoospores contained in the articulations. 
No. 196. C. pellucida . Iluds. Cartilaginous, rigid, erect, bright green, di- 
trichotomous, axils much spread, branches erect, articulations many times longer 
than broad. 
On mud-covered rocks at Jersey City, Hurlgate, the Battery, and other parts of the harbor, 2 to 5 inches 
high, wiry, not abundant, summer.: 
No. 197. G. rupestris, L. Slender, rigid, dark green, straight, bushy, branches 
erect and crowded; articulations 3 or 4 times longer than broad. 
Summer, on floats, Captain Babineau’s bath, Floating Chapel, at Hurlgate, Yellow Hook, Staten Isl¬ 
and, and other places, on rocks and Algse at half tide mark. 
No. 198. C. Rudolphiana. Ag. Filaments very long, slender, flexuous, much 
branched, inextricable, yellow green; branches di-trichotomous or irregular, ultimate 
ramuli pectinate, articulations of main stem many times longer than broad. 
Summer, on rocks, floats, and parasitical, near low water mark; soft, silky, and bright green, when re¬ 
cent; rather abundant at Fort Hamilton, Yellow Hook, and Hurlgate. 
No. 199. C. refracta. Ag. Filaments capillary, tufted, bright green, much 
branched, branches spreading on all sides, repeatedly divided and spread or reflexed. 
SummeT, on the mudflats at Gowanus, Communipaw, and other places; rather plenty for a month; 
spread in patches from 2 inches to a foot; inextricably entangled. 
No. 200. C. falcata. Duby. Filaments intricate at the base, dark green, ul¬ 
tra capillary, rigid, much and irregularly branched and curved, inner faces of branches 
furnished with short blunt falcate ramuli, articulations 3 or 4 times longer than 
broad. 
Summer and autumn, on F. nodosus and other Algse at Hurlgate ; rather plenty, occasionally on rocks 
at Hurlgate and Yellow Hook, not abundant. 
No. 201. C. arcta. Dillw. Full green, much branched, erect, dense tufts, ar¬ 
ticulations either uniformly twice as long as broad, or with the lower joints short, the 
upper very long. 
