COLLEMA| CULLEMACEE, 59 
15. C. furvum Ach. Lich. Univ. p. 650 (1810).—Thallus 
roundly lobed, more or less granular on both sides, dark 
greenish-brown or olive-black, the lobes entire, usually undulate 
and crisp, somewhat ascendant in the centre, appressed at the 
circumference (I + blood-red when dry). Apothecia moderate in 
size, scattered over the lobes, plane, brown, the margin entire ; 
spores ovoid or ellipsoid, 3-septate, becoming irregularly muriform, 
18-24 » long, 9-11 » thick.—Hook. FI. Scot. ii. p. 72; Mudd 
Man. p. 36; Cromb. Lich. Brit. p. 5; Leight. Lich. Fl. p. 24 ; 
ed. 3, p. 17; @. granulatum Hook. in Sm. Engl. Fl, v. p. 211 
(1833) ; Tayl. in Mackay Fl. Hib. ii. p. 110.  Lichenoides gela- 
tinosum lobis crassioribus fusco-viridibus Dill. Hist. Muse. p. 138, 
t. 19, fig. 22 (1741). Lichen furvus Ach. Lich. Suec. Prodr. 
p. 1382 (1798). L. granulatus Sm. Engl. Bot. t. 1757 (1807) (non 
Huds.). Lathagrium furvum 8. F. Gray Nat. Arr. i. p. 400 (1821). 
Exsicc. Cromb, n. 102; Johns n. 204. 
Distinguished from the preceding by the somewhat darker 
apothecia and by the presence of granular isidia on both surfaces of 
the lobes. The thallus differs from that of Synechoblastus rupestris 
in the narrower lobes and in the reaction with iodine. 
Hab. On rocks and old walls, chiefly calcareous, rarely on the 
ground.—Distr. Widely distributed though somewhat uncommon.— 
B. M. Ditcham and Torquay, Devon; Woolsonbury, Bognor and 
Poynings, Sussex; East Barnet, Middlesex; Marlborough, Wilts; 
Walthamstow and Chingford, Essex; Rodmorton and near Cirencester, 
Gloucestershire; Ludlow, Shropshire; Garregwn rocks, Denbighshire ; 
Frosterley, Durham; near Alston and near Whitehaven, Cumberland ; 
Kirkby Lonsdale, Westmoreland; Appin, Argyll; Killin and Blair 
Athole, Perthshire; Clare Island, Mayo. 
Form tunseforme Cromb. in Journ. Bot. xii. p. 333 (1874).— 
Differs from the species in the longer more deeply incised lobes. 
Collema tuneforme Ach. Syn. Lich. p. 322 (1814) ; Hook. in Sm. 
Eng. Fl. v. p. 211; Mudd Man. p. 36. Lichenoides gelatinoswin 
foliis latioribus tuniformibus Dill. Hist. Musc. p. 142, t. 19, 
fig. 29.4,B. Lichen tuneformis Ach. Lich. Suec. Prodr. p. 132 
(1798) ; Dicks. Pl. Crypt. Fasc. iv. p. 25 (1801). 
Hab. On calcareous rocks and walls.—Distr. Rare in W. and N. 
England, 8.W. Highlands, Scotland, and 8.W. Ireland.—B. M. Near 
Winson, Gloucestershire ; Aberdovey, Merioneth; Teesdale, Durham ; 
I. of Lismore, Argyll; Dunkerron, Kerry. 
25. SYNECHOBLASTUS Trev. Caratt. tre nuov. gen. Collem. 
Padova 1853; Koerb. Syst. Lich. Germ. p. 411 (1855) ; Mudd 
Man. p. 42. Lathagrium 8. F. Gray Nat. Arr. i. p. 399 (1821) 
pro parte. (PI. 25.) 
Thallus variously lobed, gelatinous when moist, without 
rhizing, more or less appressed to the substratum, non-corticated. 
Algal cells Nostoc distributed equally through the thallus 
(homoiomerous). Apothecia with a thalline margin ; spores 8 in 
