38 COLLEMACEI. [SYNALISSA. 
2. 8. intricata Nyl. Flora, 1883, p. 534.—Thallus effuse, fruti- 
culose, radiate, laciniato-multifid, pitch-black, lacinie rounded, 
intricate, narrow, somewhat obtuse or slightly nodulose at the 
apices; apothecia not seen.—Cromb. Journ. Bot. 1885, p. 195.— 
Omphalaria intricata Arn. Flora, 1869, p. 254. 
This peculiar plant was referred by Nylander to Nematonostoc (Flora, 
1883, p. 104); he afterwards placed it in this genus with which it agrees 
in the character of the spermogones. At the same time the gonimia 
are hormogonimia and not spelrogonimia, and so it may be a distinct 
genus, which Nylander proposes to term Synalissina. It may readily be 
known by the radiate thallus, giving it the aspect of a Plerygium. The 
apothecia have not been discovered, but the spermogones in the British 
specimens are not uncommon. 
Hab. On moist granitic rocks in upland hilly districts—Distr. Ex- 
tremely local and rare, having been gathered only in 8, Scotland.—B. M.: 
Black Craig, New Galloway, Kirkcudbrightshire. 
13. SCHIZOMA Ny]. ex Cromb. Grevillea, v. (1877) p. 108 (note). 
—Thallus lineari-laciniate, internally at length ieee 
composed of a firm gelatine, through which run [aw ¢ 6 @ ©@®2 
thin, short, frequent tubules variously arranged, -@ @ & 6,6 
but chiefly longitudinally ; gonimia nearly mo- [~~ seh 
derate, in subrotund cells, situated chiefly ee ~ 7 
under either surface, but, also sparingly seen |=  — 
smaller and scattered. Apothecia unknown. —~~- —.@ ae 
Spermogones innate, or indicated externally by @& aie Fs 
a somewhat prominent. thalline ostiole; sterig- 69g 600 AO, 
mata subsimple; spermatia minute, pistillari- ayes 
bacillar. (Nyl. in litt.) a 
This approaches in the structure of the thallus to 
Collemodium, from which it differs in the tenuity Joe 4 
of the tubules in the nearly obliterated cavity. Va 
This character and that of the spermogones en- 
title it to rank as a distinct genus; though only b ¢ 
the discovery of the apothecia would definitely Fig. 9. 
determine its place in the family, which is pro- schizoma lichinodeum 
bably between Omphalaria and Collema. The  Nyl.—a. Section of 
gonimia are with difficulty expelled from the cells thallus, x 200. &. 
so as to be seen free. Sterigmata. v. Sper- 
matia. 
1. S. lichinodeum Nyl. ex Cromb. Grevillea, v. p. 108, note.— 
Thallus small, loosely adnate, lineari-laciniose, brownish-black, 
laciniz plane or subcanaliculate, ligulate, simple or more frequently 
2-3-divided, obtuse at the apices, naked, or sometimes sprinkled 
with concolorous isidiose globules. Apothecia not yet seen.— 
Collema lichinodeum Nyl. Flora, 1869, p. 293; Carroll, Journ. Bot. 
ili. p. 287: Cromb. Lich. Brit. p. 3; Leight. Lich. Fl. p. 18, ed. 3, 
p. 15; Cromb. Journ. Bot. 1874, p. 332. 
The thallus is normally orbicular, with the lacinie slightly suberect 
