Ser. CHLOROSPERME®. Fam. Siphonee. 
Puate III. 
BRYOPSIS PLUMOSA, %. 
Gen. Cuar. Frond membranaceous, filiform, tubular, cylindrical, glistening, 
branched ; the branches imbricated or distichous and pinnated, filled 
with a fine green, minutely granuliferous fluid. Grev. 
Bryoprsts plumosa ; frond having a triangular outline, naked below, branched 
above, branches spreading, their upper half pectinato-pmnated, pin- 
nules subdistichous. 
Bryopsts plumosa, 4g. Sp. Alg. vol.i. p. 448. Syst. p.178. Grev. Fl. Edin. 
p- 307. <Alg. Brit. p.187.t.19. Hook. Br. Fl. vol. ii. p. 318. Harv. Man. 
p. 146. Wyatt. Alg. Danm. no. 128. J. Ag. Alg. Medit. p.21. Endl. 3rd 
Suppl. p. 20. Mart. Fl. Braz. vol.i. p.11. Kiitz. Ph. Gen. p. 306. 
Bryopsis Lyngbyei, Fl. Dan. t. 1063. Lyngb. Hyd. Dan. p.75.t.19. Spreng. 
Syst. Veg. vol. iv. p. 365. 
Uva plumosa, Huds. Fl. dng. p. 571. Eng. Bot. t. 2375. 
Has. In the sea, on rocks and small stones. Annual. Summer and Au- 
tumn. Frequent on the shores of the British Islands. 
Geoer. Distr. Along the Atlantic shores of Europe from the Feroe Islands to 
Spain. Mediterranean Sea, J. Agardh. South Brazil, Martius. Falkland 
Islands, Dr. Hooker. Cape of Good Hope, W. H. H. 
Desc. Root composed of irregular entangled filaments. Fronds several from the 
same base, at first perfectly simple, straight and thread-like till they become 
half an inch to an inch in length, at which period they commence to form 
lateral branchlets in the upper half. In this state the whole plant resembles 
a little feather. Afterwards the naked part of the stem lengthens, and its 
ramuli grow out into branches 1-3 inches long and about half a line in 
diameter, producing, by a repetition of the primary mode of growth, several 
series of lesser branches, until a much branched frond results. Then, owing 
to the lower branches beg long, and the upper gradually diminishing to 
the summit, the general outline is triangular or pyramidal. In every stage, 
however, the branches, naked below and feathered above, afford a sufficiently 
distinguishing character. The substance is exceedingly glossy, flaccid, and 
easily injured, and the colour arich deep green. ach branch consists of a 
single cellule, and on wounding the outer membrane discharges its contents 
in the form of a granular thick fluid. In drying it adheres most closely to 
paper, and has a varnished appearance. 
A very widely distributed plant found plentifully throughout 
both the temperate zones, and even in some of the warmer seas. 
It is perhaps also a native of the tropics, the West Indian B. pen- 
