20 



EPHEBACEI. 



[SPTLOXEMA. 



Joum. Bot. 1874, p. 331), wliicli most probably is a distinct gemis. 

 Spilonema would then contain only one species, viz. .S'. panidoxum. From 

 JEphebe, though differing but slightly in the structure of the thallus, Spi- 

 lonema is readily distinguished by the fructification. 



1. S. paradoxxim Born. Mem. See. Cherb. iv. (1856) p. 226, 

 t. 1, 2. — Thallus fniticulose, branched, thin, cylindrical, pannoso- 

 intricate, the branchlets subsecund,. dark-brown or brownish-black, 

 usuaUv opaque. Apothecia small, terminal, somewhat convex, im- 

 margiuate, black ; spores oblong, simple, 0,000 mm. long, 0,U04: mm. 

 thick, hypothecium blackish ; hymeuial gelatine deep blue, then 



.^0 





Fig. 2. 

 Spilo7iema jMradoxum Born. — a. Thalline branch with apotbecium, X 30. 

 a'. Three branches with spermogones, x30. b. Fragment of trunk and 

 larger branch, and b', branchlets. X 200. c. Very thin section of thalline 

 trunk, and c' transverse section of the same, X 2U0. d. Section of apotbe- 

 cium, X 30. e. Theca and paraphyses, X 350. /. Spores, X 5(X). g. 

 Jointed sterigmata and spermatia, X 500. 



dark-violet with iodine. —"N"yl. Syn. i. p. 89, t. 2. f. 4 ; Mudd, 

 Man. p. 35 ; Leight. Ann. Mag. Xat. Hist. ser. 3, xvi. p. 0, 

 t. 4. ff. 7-11 ; Lich. Fl. p. 11, ed.^3, p. 10 ; Cromb. Lich.ljrit. 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, 



