Ser. CHLOROSPERMEX. , Fam. Siphonee. 
Puatse CCCL. 4. 
VAUCHERIA MARINA, Zynys. 
Gen. Cuar. Fronds aggregated, tubular, continuous, capillary, coloured by 
an internal, green, pulverulent mass. ructification, dark green, ho- 
mogencous sporangia (coniocysta), attached to the frond.—Grev.— 
Vaucuerta (DC.),—in honour of M. Vaucher, a distinguished Swiss 
writer upon fresh-water Conferve, &c. 
Vaucueria marina; filaments loosely tufted, or distinct; branches few, 
very long, obtuse; sporangia solitary, obovate, pedicellate, lateral. 
Carm. 
VaucHEerIA marina, Lyngb. Hyd. Dan. p. 719. +t. 22. Hook. Br. Fl. vol. ii. 
p- 319. Harv. Man. ed. 1. p. 14. ed. 2. p.195. Wyatt, Alg. Dann. no. 168(?). 
Has. On sea-plants, mud, &c., between tide-marks. Annual. Summer. 
At Appin, on Furcellaria fastigiata, Capt. Carmichael. On mud at 
Torbay and Salcombe, Vrs. Griffiths and Mrs. Wyatt. 
Grocer. Distr. Ferroe Islands, Lyngd. 
Descr. Fronds forming more or less dense erect tufts one or two inches in 
height, very slender and flaccid, irregularly branched, somewhat dichoto- 
mous; branches few, erect, their granular contents sometimes interrupted at 
long interspaces. Sporangia few, scattered, broadly obovate or pear-shaped, 
very obtuse, tapering to the base into a short stalk. Co/owr a bright grass- 
green, becoming rather brownish, but retaining a gloss in drying. 
Not being able to prepare a satisfactory figure of this plant 
from dried specimens, and not having access to recent ones, I 
have copied, from the work of Lyngbye, a portion of his figure 
representing the magnified appearance of a branch in fruit. I 
regret that I was not earlier aware that a figure of his /. marina 
existed among the manuscript papers of the late Capt. Carmi- 
chael ; a fact communicated to me since the plate was engraved 
and printed. Had I known it in time I should naturally have 
preferred publishing his drawing made from British specimens, to 
copying the published plate of a foreign author. 
A, Fig.1. Tuft of VaucHERIA martina :—+he natural size. 2. A portion of a 
filament in fruit :—magnified ; copied from Lyngbye. 
