—_- ot, + ond 
40 CYCLOCARPINEX [PYRENOPSIS 
The apothecia are rare in the few British specimens and the spores 
badly developed. The gonidia are chroococcoid, the internal structure 
thus resembling that of Phylliscwm, under which genus it should - 
perhaps be classified. The material is too scanty and poor for exact 
determination. 
Hab. On moist mica-schist rocks.—/. MW. Summit of Ben Lawers, 
Perthshire. 
19. SYNALISSA Fr. Syst. Orb. Veg. p. 297 (1825). (PI. 19.) 
Thallus minutely fruticose or partly crustaceous, dark- 
coloured. Algal cells Glwocapsa. Apothecia terminal, partly 
immersed, at first closed then open, with a thalline margin ; 
spores 8 in the ascus or numerous, simple, colourless. Spermogones 
immersed, with simple sterigmata and acrogenous spermatia. 
Chiefly distinguished from the other genera of Pyrenopsidaces by 
the fruticose habit. The thallus is tinged red or dark-brown on the 
surface by gloeocapsin. 
1. §. ramulosa Fr. Syst. Orb. Veg. p. 297 (1825).—Thallus 
in blackish pulvinate tufts, the branches short, erect, obtuse at 
the apices or nodulose. Apothecia minute, at first immersed 
becoming open, with a tumid thalline margin ; spores 8—24 in the 
ascus, ellipsoid or spherical, small, 9-11 » long, 6-7 p thick ; 
hymenial gelatine not tinged with iodine.—S. symphorea Nyl. 
Syn. Lich. p. 94, t. 3, fig. 2 (1858); Mudd Man. p. 35, t. 1, 
fig. 2; Cromb. Lich. Brit. p. 3 & Monogr. i. p. 37, fig. 8 : Leight. 
Lich. Fl p. 16; ed. 3, p. 13. S. vulgaris Thwaites in Ann. Mag. 
Nat. Hist. ser. 2, iii. p. 220, t. 8, figs. 1-3 (1849). Collema 
ramulosum Hoftm. Deutschl. Flora ii, p. 161 (1795). C. 
symphoreum DC. Fl. Fr. ii. p. 382 (1805). C. synalissum Ach. 
Lich. Univ. p. 640 (1810) pro parte; Tayl. in Mackay FI. 
Hib. ii. p. 108. 
Occurs frequently with other lichens, Lecwats lurida, L. testacea, 
Lecanora crassa, ete. The apothecia are very rare. The spermogones 
are also rarely seen ; the spermatia are very minute, 3 » long, 1 » thick. 
Hab. On calcareous rocks in maritime and upland districts.— 
Distr. Rare in §8., W. and N. England and in S.W. Scotland; record 
doubtful in Ireland.—Z. WM. Portland Island, Dorset; Anstey’s Cove, 
Torquay, and near Babbicombe, Devon; St. Vincent’s Rocks, Bristol, 
Gloucestershire; Malvern, W. Yorkshire; Barcaldine, Argyll. 
2. §. intricata Nyl. in Flora Ixvi. p. 534 (1883).—Thallus 
spreading, branched, brownish-black, the branches narrow, 
rounded, somewhat obtuse or slightly nodulose at the apices. 
Apothecia not seen.—Cromb. in Journ. Bot. xxiii. p. 195 
(1885). Omphalaria intricata Arn. in Flora lii. p. 254 (1869). 
Nematonostoe intricatum Nyl. in Flora Ixvi. p. 104 (1883). 
Of doubtful position owing to the character of the algal cells. 
They occur in rows, and for that reason Nylander suggested that it 
