CRYPTOGAMIA. ALGiE. Lichen. 
9 
smooth polished surface.—Mr. Griffith has discovered a further change in 
this Lichen, as curious as it must be unexpected, and which is sufficient 
to show that many discoveries yet await our inquiries in this singular 
tribe of plants. I shall transcribe his own words.—In the more 
advanced state of L. niger small glaucous leaves issue from the dark 
ground, which in time form the imbricated L. plumbeus. The dark 
ground (which is now of a spongy texture,) becomes elevated, and forms 
that cork-like substance which is attached to the L. plumbeus.” 
(Inky Lichen. E.) Rocks and large stones about St. Ives, Cornwall, plen¬ 
tifully. Rocks about Kirkby Lonsdale, Westmoreland. Dr. J. E. Smith. 
About Garn, abundantly. Mr. Griffith ; on Lime-stone. (On the rocks of 
Cleadon Hills, on Gateshead Fell, and in the neighbourhood of Egleston, 
Durham. Mr. Winch. E.) P. Jan.—Dec. 
L. fusco-a'ter. Tubercles black, (not bordered. E.) ; crust brown. 
{Hoffm. Lich. 54. 1—1. E.) Jacq. Coll. ii. 14. 3, as on rocks ; 4, as on trees . 
(E. Bot. 1734. E.) 
Crust rough, mealy, thin, hardish, closely adhering, dirty, obscure grey. 
Tubercles lentil-shaped, convex, black, not bordered with a different 
colour. Jacq. Tubercles rough, black throughout. 
(Black Lentil-shielded Lichen. Lichen den dr iticus. E. Bot. Patellaria 
fusco-atra. Hoffm. Lecidea fusco-atra. Achar. Hook. E.) On rocks and 
stones. On trees at Enville, Staffordshire. On the stone coping of a wall 
at Edgbaston. (On stones upon Gateshead Fell, and near Egleston. Mr. 
Winch. E.) P. Jan.—Dec. Relhan. July. 
Var. 2. Tubercles black: crust none. Scop. p. 364. Weber, p. 191. Hagen, 
p. 49. 
On soaking it in water some very fine branny flakes separated from the 
indurated clay on which it grew.—On a mud wall. Specimen from 
Major Velley. On rocks in the north. Dr. Alexander. 
L. CEde'ri. Tubercles black, with an indistinct black border; partly 
imbedded in the crust; crust rusty red, rough, cracked. 
Hoffm. Lich. 19. 2— (E. Bot. 1118. E.) 
Crust half a line thick, tessellated, or cracking into small partitions when 
dry, colour of rusty iron. Tubercles numerous, sometimes crowded, blue, 
black, encompassed with a narrow margin, shining when wet, flat, but 
convex and perforated at the top when old. Hoffmann. (Shields three or 
four times as large as those of L. Dicksoni (p. 17) sessile not immersed. 
E. Bot. 
Yellow Ochrey Lichen. L. Oederi of Weber, and With. Ed. 4. not the 
real L. Oederi of FI. Dan. which is the L. ccesius of Dickson, and L. 
Dicksoni of With. Ed. 4. King’s Park, Edinburgh. Mr. Brown. E.) 
Rocks and stones in Scotland. 
L. quer/neus. Tubercles black, (not bordered. E.) ; partly sunk in 
the crust; crust yellowish, with a tinge of brown. 
(E. Bot. 485. E.)— Dicks. 2, 3. 
Crust growing irregularly to the bark of trees, composed of granules of a 
pale yellow. Tubercles convex, unequal, which from the rising of the 
crust sometimes seem as if immersed. Very much resembling a Byssus, 
but its fructification proves it to be a Lichen. Dicks. Crust following the 
sinuosities of the bark, without any defined margin, composed^ of micros- 
