LICHENS OF THE ISLE OF MAN. 
247 
work I would refer all interested in our native lichens. Those 
not familiar with their structure would do well to read Dr. Lauder 
Lindsay’s “Popular British Lichens,” or an article by Mr. W. 
Phillips. F.L.S., in the “ Midland Naturalist,” vol. 3, pages 125, seq. 
Thallus Foliaceous. 
Collema pulposum (Ach.). Thallus dark green when wet, black 
when dry, in roundish patches ; edges distinctly lobed, 
centre crowded with smaller lobes; apothecia reddish ; 
spores 8 in each ascus, with 3 septa. On damp stone walls, 
Ramsey. 
Spore ’02x - 01 mm- 
Bseomyees rufus (DC.). Thallus green or grey, minutely squamulose ; 
apothecia red, on the top of whitish stalks ; spores 8, simple, colour¬ 
less. On crumbled rocks, Ramsey. 
B. iemadophilus (Ehrh.). Thallus grey-green, granules thinly scattered ; 
apothecia pinkish ; spores 8, spindle-shaped, 1-3-septate. On moist 
boggy earth, Ramsey. 
Cladonia eepvieornis (Schasr.). Thallus small, with long lobed lacinulse, 
like small leaves, sub-erect, pale green above, white beneath ; 
apothecia, small brown knobs on the edge of the laciniae ; both fruit 
and leaves are much darker when dry. Spores small, oblong. On 
peaty soil, North Barrule, 1,800ft. 
C. pyxidata (Fr.). Thallus like small lobed leaves, pale green above, white 
below, from the centre of which springs a cup-shaped stalk, the edges 
of which bear the apothecia, which are brown and globular in shape, 
and sometimes proliferous, viz., with smaller cups and leaflets arising 
from the edge of the first cups, as were the specimens found. On 
damp earth, Ramsey. This lichen is plentiful all over the island, 
and assumes several different forms. 
C. digitata var. macilenta (Hoffm.). Thallus as in the preceding; apothecia 
scarlet, on the points of the small rays, into which the green stalk 
divides at the top. Amongst moss on boggy earth, North Barrule. 
Thallus Fruticulose (or Shrub-like). 
Ramalina farinaeea (L-). Thallus greenish-grey, like tassels hanging from 
the bark of trees, laciniae elongated, flattened, with patches of soredia 
on the edges; apothecia marginal, paler, yellow, rare. On rough 
bark of trees, Ramsey, Sulby Glen. 
R. fastig'iata (Pers.). Thallus greenish-grey, rigid, in short dense clusters ; 
apothecia terminal, paler, abundant; spores 8, colourless, oblong or 
curved, 1-septate. On old trees, Sulby Glen. 
R. seopulorum (Dicks). Thallus sea green, very rigid, in thick clusters, 
often roughened by soredia; apothecia marginal and terminal; 
spores 8, colourless, oblong, 1-septate. On rocks on the shore, Peel. 
R. CUSpidata (Ach.). Thallus greenish-grey, rigid, shining, divided at ends ; 
no apothecia on specimens found. On rocks on hill, Peel. 
Thallus Foliaceous. 
Peltigera polydaetyla (Hoffm.). Thallus grey or brown when dry, and 
smooth on the surface ; woolly and paler underneath, with darker 
nerves and scattered root-like rhizinse; apothecia dark brown, on the 
ascending finger-like lobes of the thallus ; spores 8, colourless, long 
and narrow, 3-7-septate. Amongst grass, Ramsey. 
P. horizontalis (L.). Thallus grey or pale brown, smooth and shining 
above, with broad, roundish lobes ; under-surface woolly, pale brown, 
with darker nerves and white depressions; apothecia dark brown, 
horizontal, on short lobes on the margin of thallus ; spores 8, pale- 
coloured, 3-septate, Amongst grass, Ballure Glen, Ramsey. 
November, 1893. 
