SOME ENDOPHYTIC ALGÆ. 297 
forking of the sporangium being the most frequent. The normal 
form of sporangium in the genus is simple, and cylindrical or 
acutely ovate. In some species, however, traces of forking are 
not uncommon, but in S. Zanardinii more or less complete 
bifurcation frequently occurs. 
8. Zanardinii is also found in Champia parvula. 
LITERATURE. 
1. RrrwkE, J.—Zwei parasitische Algen. Bot. Zeit. xxxvii. 
1879, p. 473. 
2. Huser, J.—Contributions à la connaissance des Chæto- 
phorées épiphytes et endophytes et leurs affinités. Ann. 
des Sei. Nat., Bot. 1893, 7 sér. xvi. p. 265. 
3. Winte, N.—Om en ny endophytisk Alge. Christiania, 
Vidensk. Forh. 1880, No. 4. 
Algologische Mitteilungen. II. Ueber eine neue endo- 
phytisehe Alge. Prings. Jahrb. 1887, xviii. p. 435. 
4. Lacerneim.—Bidrag till Sveriges Algflora, p. 74. — (Etver. 
Kongl. Vetensk.-Akad. Fórhand. 1883, No. 9. 
5. Hauck, F.—Die Meeresalgen Deutschlands. Leipzig, 1885. 
6. De Toxr, J. B.—Sylloge Algarum. 
7. Orrmanns, F.—Morphologie u. Biologie der Algen, Band II. 
Jena, 1905. 
8. Retnscu, P.—Contributiones ad Algologiam et Fungologiam. 
1874-5. 
9. Hor{mes, E. M., & E. A. L. BarrERs.— Appendix to the 
Revised List of British Marine Alge. Ann. Bot. v. 1891, 
p. 923. 
10. Barrers, E. A. L.—A Catalogue of British Marine Alge. 
Supplement to the Journal of Botany, 1902. 
11. Cnovaw, P. L. & H. M.—Florule de Finistère. Paris, 1867. 
EXPLANATION OF PLATE 12. 
Fig. 1. Surface view of a small portion of the frond of Nitophyllum Hillie 
infected with Lndoderma viride. x 200. 
2. Section of thallus of Nitophyllum showing Endoderma-filaments in the 
outer cell-walls. A filament is also seen growing between the cells 
towards the other surface of the thallus. x 400. 
3. Older portion of Endoderma plant, surface view showing sporangia, 
x 400. 
4. Sporangia in various stages. x 400. 
5, Streblonema intestinum, Drawing from original specimen in Brong 
niarvtella byssoides. XxX 950. 
G. Strehlonema Zauardinii, bifureating sporangium. X 450. 
