6 
CRYPTOGAMIA. ALGiE. Lichen. 
Crust stony, composed of minute granules, agglutinated in lines like the 
fibres of wood. Tubercles black, rather larger than the particles forming 
the crust. Hagen. 
(Grained Lichen. E.) On pales and old willows. Dicks. 10. 
L. ocula'tus. Tubercles black, sessile or on pedicles; crust white, 
rough with fungous papillae. Dicks. 
(E.Bot. 1833. E.)— Dicks. 6.3. 
Crust elevated into short papillae set very close together, both simple and 
branched. Tubercles growing on the crust as well as terminating the 
papillae and branches, sometimes flat and depressed, sometimes convex. 
Dicks. 
(Eye-like Coralline Lichen. Lecanora oculata . Achar. Hook. E.) 
Rocks and stones, Scotland. 
L. muscc/rum. Tubercles black, in clusters, not bordered ; crust hoary, 
mealy. 
Jacq. Coll. iv. 7. 1— Relh. at p. 424— FI. Dan. 1003. 1. 
Crust mealy, friable, grey or greenish. Tubercles sometimes flattish when 
dry, otherwise convex, shining, black, numerous, large, turban-shaped 
when old. Weber. 
(Mealy Moss Lichen. E. On decayed mosses at Fawdon Slate, and 
near Hilton Castle, Durham ; also in Teesdale Forest. Mr. Winch. E.) 
On mosses. On heaths. Mr. Woodward. Gogmagog Hills. Relhan. 
P. Jan.—Dec. 
L. pilula'ris. Tubercles black, globular; crust grey white. 
Linn. Tr. ii. 28. 1. 
Some of the younger fructifications are saucer-like, with elevated borders of 
the same colour ; these are but few, and seem soon to lose that form. 
Tubercles black within, not bordered, though sometimes there seems to be 
an indistinct border of the same colour as the tubercle. 
(Pill-bearing Grey Lichen. E.) Found in Bowdowen Park, Anglesea, 
by the Rev. Hugh Davies. Linn. Tr. ii. p. 283. On the summit of the 
Rowley Hills, Staffordshire. 
L. gelasina'tus. Tubercles black, globular, shining, dimpled, not 
bordered; crust white, puckered, and raised into nearly hemi¬ 
spherical portions. 
(E. Bot. 2520. E.) 
Tubercles hollow and black within, placed on the protuberances, as well as 
in the interstices of the crust. Crust white, tender, hollow and white 
under the protuberances. (In E. Bot. this remarkable production is con¬ 
sidered to be parasitical on L. pertusus , and to exhibit no crust belonging 
to itself, at least, during fructification. Each receptacle looks like a grain 
of gunpowder, but under a microscope proves pear-shaped, polished, 
with a very short stalk: the disk producing a black powder. 
Gunpowder Lichen. Calicium sessile. E. Bot. E.) First found by J. 
Wynne Griffith, Esq. on oak trees in Garn Dingle, near Denbigh. 
L. cineras'cens. Tubercles black, with whitish borders; crust grey 
white. 
Hoff'm . Enum. 4. 3. 
