ere kee 
Lithothamnion Phil. emend. 
2. L. fruticulosum (Kiitz.) Fosl. 
List of Lith. p. 6 (non Norw. Lith.); Spongites fruticulosa Kitz. Polvyp. 
calcif. p. 33, Tab. Phyc. 19, t. 99. 
Syn. L. ramulosum Solms, Corall. Monogr. p. 19: ex parte’). 
L. fasciculatum Solms 1.c. p.20; saltem ex parte. 
L. fasciculatum @ fruticulosum Hauck, Meeresalg. p. 274. 
The limits of the above species are not yet well fixed. I have taken 
it in the same sense as L. fasciculatum 8 fruticilosum Hauck 1. c. 
Whether it also includes the coarser form delineated by Hauck 1. «, 
1.5, fig.3 is as yet not quite certain. 
In the collection from Siam are some specimens certainly rather 
young and not well developed, but on the whole fully agreeing with 
Adriatic and Mediterranean specimens of the present species. They sur- 
round small stones and shells of Mollusks, forming a very thin crust 
which sends forth partly crowded partly scattered wart-like excrescences 
or short and thin branches up to 5 mm. long. The latter are frequently 
knotty and rugged, often with somewhat spherical thickened ends. 
A couple of the specimens were scantily provided with conceptacles 
of sporangia in the beginning of February. The conceptacles were how- 
ever almost dissolved except one. This was about 400 » in diameter 
seen from above, with four-parted sporangia about 150 by 40—50y. 
A solitary, probably cystocarpic conceptacle of a conical shape measured 
about 600 at the base ®). 
Between Koh Mesan and Cape Liant in 9 fathoms water. 
Area: The Mediterranean, the Adriatic, and Mauritius. 
3. L. funafutiense Fosl. mscr. 
Lithothamnion Philippi f. funafutiensis Fosl. Notes Lith. Funaf. p. 3; 
ale. Alg. Funaf. p. 5. 
1) Owing to a mistake I have in Rev. Syst. Surv. Melob. identified ZL. ramlo- 
sum Phil. with L. fruticulosum Ktitz. 
) After this was in press, I have had the opportunity to examine authentic 
specimens from Hauck’s herbarium. L. fruticuloswm includes two forms, 
the one with 1—1.5 nm. thick branches as the above mentioned, which I 
propose to name f.clavulata. This form corresponds in the main with the 
quoted figure by Kiitzing 1c. as well as Hauck J.c., t.5, flg.5, the latter 
representing an old specimen. It sometimes assumes an almost globular 
shape with nearly fastigiate branches (specimens from the coast of Greece). 
The other form is rather coarse, in habit often much differing from the 
former and approaching G. brassica-florida (Harv.) Fosl., with the branches 
frequently 2—2.5 mm. thick. This form I name f. crassiwscula. On the 
other hand, the coarse form delineated by Hauck 1.c.,t.5, fig.3 seems to 
belong to another species. 
Botanisk Tidsskrift. 24de Bind. 2 
