Ser. CHLOROSPERMEA. Fam. Ulvacee. 
Pirate CCCXLIV. 
ENTEROMORPHA LINKIANA, Grev. 
Gen. Cuar. yond tubular, membranaceous, of a green colour and re- 
ticulated structure. Fructification, granules, contained in the cells 
of the membrane. ENnrpromoreua (Liz/),—from evtepor, an entrail, 
and popdn, form or appearance. 
Enteromorena Linkiana; “fronds cylindrical, tubular, filiform, reticu- 
lated, pellucid, of a very pale green colour, membranaceous (rigid 
when dry), much branched ; branches attenuate.”— Grev. 
EnteromorruHa Linkiana, Grev. Alg. Brit. p. 182. Hook. Br. Fl. vol. ii. 
p-314. Harv. Man. ed.1. p.174. ed. 2. p. 213. Kiitz. Sp. Alg. p. 481. 
Has. Between tide-marks. Annual. Summer. At Appin, Captain 
Carmichael. 
Groer. Distr. ? 
Descr. “ Root a minute disc. Frond six to twelve inches in length, filiform, 
cylindrical, tubular, inflated, rising with a main stem about one line in 
diameter, on all sides of which, and along the whole length, the branches 
are inserted; branches two to six inches long, smaller in diameter than the 
stem, between erect and spreading, set with a second series one or two 
inches long, which, in their turn, bear a third, which are quite capillary, all 
of them much attenuated toward the extremity. The s¢ructure distinctly 
reticulated, the reticulations roundish, but angular. Fructification, three or 
four subglobose granules within many of the reticulations. Sudstance mem- 
branaceous, but firm and somewhat cartilaginous when dry, adhering very 
imperfectly to paper. Colowr a very pale, yellowish green.”—Grev. J. c. 
(I do not find more than oze granule in each fertile cell, but three or four 
fertile cells generally cluster together.) 
PRA PLL LPL LD LLL LPL 
I prefer copying the above description from Dr. Greyille’s 
work, because my knowledge of this species (or form) is limited 
to a single specimen collected by Capt. Carmichael, and now 
preserved in the Dublin University Herbarium. From- this 
specimen the figure has been taken. It will be seen that while 
the external habit is peculiar, the microscopic characters are very 
similar to those of #. clathrata, EF. erecta, and LF. ramulosa. 
Dr. Greville lays stress on the rigidity of substance, which is 
very observable in the dry state at least. ‘The branches are of 
