31 
No. 175. C. spongiosum . Harv. Stems robust, cartilaginous, more or less 
opaque and veiny, branched in every direction, branches thickly set with dense qua- 
drifarous, repeatedly dichotomous, round topped branchlets much spread; articula¬ 
tions of the branches swollen at the joints, thrice as long as broad, apices short, 
bifid. 
Summer and autumn, on Fucus and other Algae, at Hurl gate, between tide marks—rather abundant— 
holds water like a sponge; antheridia mostly single, tulip shape; a few in clusters, 4 to 6 on a stem : these, 
on two occasions, exhibited violent paroxysms, when seven hours out of water: fruit round and pear shape, 
sparingly distributed—1 to 3 inches long. 
B 
No. 176. C. Baileyi. Harv. Main stem robust, cartilaginous, branches much 
attenuated and crowded near the tips, very irregular, many times dichotomous and 
quadrifarious, the crowded ramuli giving it the appearance of being capitate, fruit ap¬ 
ple shape, 2 to 6 inches long. Spring and summer. 
Found floating at Red Hook and Staten Island, and elsewhere; lodges abundantly in the high water 
drift at Port Richmond, S. I. This plant is extremely variable, and has many of the characteristics of C. 
spongiosum ; in both, the borders, like the dissepiments, are hyaline, and the ramuli repeatedly dichotomous; 
the axils, when dichotomous always commence at the dissepiments, and when distichous, the axil is just be¬ 
low the dissepiment. The name is in compliment to Professor Bailey, of West Point, who discovered it at 
Fort Hamilton, and who has devoted much attention to Algae. I have not seen that gentleman’s description 
of this beautiful plant, but have examined varieties enough to show its variable character. The graceful 
swelling at the joints is common to several in this genus, and a singular ovate horizontally striate organ, pro¬ 
bably a young pericarp, is also common to several genera ; in some of the fruit the outline of the pericarp is 
lobed, and those exhibit the rounded outline of the internal spores, or globular swarms of spores. 
No. 177. C. pinnata . Stem robust, branches alternate, pinnated, apices capil¬ 
lary, obtuse, joints at base generally obscure, joints near base 1 time, and increasing 
towards apices to 2 times the diameter, joints of branches I] to 4 times longer than 
broad, dissepiments and sides of branches and ramuli hyaline, and somewhat con¬ 
stricted at the dissepiments; fruit apple shape, and organs resembling a tripartite 
fan, (the tetraspore of some authors,) opaque, much branched. 
Autumn, at Hurlgate, parasitic, on Fucus nodosus at low water mark, half inch to one and a half inches 
long, not abundant, dull red; by keeping a day in fresh water the tips turn green, and it is then very beau- 
tiful. 
Family XIV. SIPHOHBiB. Grev. 
Green, composed of continuous, tubular, simple or branched filaments. 
Genus, BRYOPSIS. Lamour. 
Membranaceous, tubular, cylindrical,filiform, branched, shining green, filled with 
a green minutely granuliferous fluid. 
No. 185. B. plumosa . Huds. The branches scattered, naked below, spread, 
twice or thrice pinnated, the pinnae pectinated. 
Summer, on rocks and timber, between tide-marks, common at Huilgate, the Battery, Yellow Hook, 
Bergen Point, and other parts of the Bay; this plant appears first on floating timber that is warmed by the 
sun ; it appears on the floating fenders of the Floating Chapel in the East River, two weeks earlier than on 
any rock in the harbor. 
