20 EPHEBACEL. [SPILONEMA. 
Journ. Bot. 1874, p. 331), which most probably is a distinct genus. 
Spilonema would then contain only one species, viz. S. paradoxum. From 
Ephebe, though differing but slightly in the structure of the thallus, Sp2- 
lonema is readily distinguished by the fructification. 
1. §. paradoxum Born. Mém. Soc. Cherb. iv. (1856) p. 226, 
t. 1, 2.—Thallus fruticulose, branched, thin, cylindrical, pannoso- 
“ intricate, the branchlets subsecund, dark-brown or brownish-black, 
usually opaque. Apothecia small, terminal, somewhat convex, im- 
marginate, black ; spores oblong, simple, 0,009 mm. long, 0,004 mm. 
thick, hypothecium blackish ; hymenial gelatine deep blue, then 
A 
a GAN 
W'G's. 5h 
Fig. 2. 
Spilonema paradoxum Born.—u. Thalline branch with apothecium, x 30. 
a’. Three branches with spermogones, x30. 0. Fragment of trunk and 
larger branch, and 0’, branchlets, x 200. c¢. Very thin section of thalline 
trunk, and c' transverse section of the same, x 200. d. Section of apothe- 
cium, X 30. ¢. Theca and paraphyses, x 350. /f. Spores, x 500. g. 
Jointed sterigmata and spermatia, x 500. 
dark-violet with iodine.—Nyl. Syn. i. p. 89, t. 2. f. 4; Mudd, 
Man. p. 35; Leight. Ann. Mag. Nat. Hist. ser. 3, xvi. p. 9, 
t. 4. ff. 7-11; Lich. Fl. p. 11, ed. 3, p. 10; Cromb. Lich. Brit. p. 1; 
Journ. Bot. 1874, p. 331.—Brit. Exs.: Leight. n. 347. 
In an infertile or immature state this is difficult to distinguish from 
some species of allied genera. The thallus bears a considerable resem- 
blance, when fully developed, to Ephebe pubescens, but is rather smaller, 
