Flau U T
11
I
P l a t e XXV.
STRIARIA ATTENUATA, Grev.
Gen. Char. Root a small, naked disc. Frond tubular, membranaceous,
continuous, branched. Fructification-, groups of naked, roundish
spores, disposed in transverse lines. Striaria—from the spores
. in transverse stria or lines.
Striaria attenuata ; branches and ramuli mostly opposite, tapering to each
extremity.
Striaria attenuata, Grev. Crypt. M . (Syn.) p .44. J ig . Brit. p. 55. t. 9. Hook.
Br. M. vol. Ü. p. 279. Harv. in Mack. M. Hii. part 3. p. 176. Wyatt,
Alg. Banm. no. 160. Meneg. Alg. Ital. et Balm. p. 157. J. Ag. A lg. Medit.
p. 41. Endl. 3rd S uppl.-¡¡.23. Kiitz. Phyc. Gen. ^ .3 3 3 . t. 21. Î. 2. Harv.
in Hook. Journ. Bot. vol. i. p. 298. Me Calla, Alg. Hib. no. 18.
Scytosiphon olivascens, Carm. MSS.
Carmichablia attenuata, Grev. Sc. Crypt, t. 288.
Zonaria Naccariana, Ag. MSS. Nac. El. Ven. vol. vi. p. 94. Alg. Adr. p. 82.
Zonaria Hneolata, Ag. in Biar. Eatisb. 1827. Ag. Alg. Eur. t. 40.
Stilophora crinita, Ag. Aufzähl, p. 17. Nac. El. Ven. vol. vi. p. 94. Ala.
Adr. p. 83. ^
SoLENiA crinita, Ag. Syst. p. 186.
SoLENiA attenuata, Ag. Syst. p. 187.
Ulva attenuata, Nac. El. Ven. vol. vi. p. 72. Alg. Adr. p. 54.
Dictyota lineolata, Grev. Syn. pi. xhii.
Conferva crinita. Euch. El. Ven. p. 269.
H a b . Parasitical on the smaller Algæ, generaUy growing beyond the tide
range. Annual. Summer. Appin, Capt. Carmichael. Bute, B r.
Oreoille. Belfast Lough, Br. Brummond. Strangford Lough, Mr.
W. Thompson. Torbay, Mrs. Griffiths-, Miss Cutler. Eoundstone
Bay, Mr. Mc’Calla. Devonport, Mr. R a lfs ; Rev. W. 8. Hore. Penzance
and Ilfracombe, Mr. Ralfs.
Geoor. Distr. Shores of British Islands. Coast of Sweden, Areschoug i
Mediterranean Sea.
Desc. Eoot a small, scutate disc. Eronds tufted, 3-1 2 inches long, or more,
from half a line to one or two lines in diameter, tubular, tapering to each
extremity, fui-nisbed at short intervals witb branches similar in form, but of
rather less diameter than the main frond, which are again beset with smaller
ramuU. Branches and ramuli mostly opposite, sometimes in threes, rarely
scattered, patent, aU much constricted at their insertion, and produced at
them apices into very fine, setaceous points. When in fructification, tbe
branches, in all parts of tbe frond, are marked, at spaces of half a hue
asunder, witb transverse rings or bands composed of clusters of roundish