992. P . saxatilis, Ach.—A species collected from the bark of
Oak trees, growing in the interior of the Island. Alt. 4.—Found
also in Great Britain. Sterile.
993. P . laevigata, Ach.—A species very like the last mentioned.
—Bound also in Great Britain. Sterile.
994. P . conspersa, Ach.; forma Mougeotii, Schser.—Found on
the rocks at St. Helena, and also in Great Britain. Sterile.
995. P. incurva? Fr.—Found on the rocks at St. Helena, and
also in Great Britain. Sterile.
996. P. caperata, Linn.—Found at St. Helena; as also in Great
Britain.
997. P . hyperopta, Ach.?—A very white Lichen, from the
clay rock above The Hermitage; also from trunks of Fir trees on
the high land. Alt. 4.
998. P. lepidiota, Smrf.
Physcia, Nyl.
999. P. flavicans, D.C.—A bright orange-yellow shrubby
Lichen, found on the rocky outskirts, and on the stems of Fir trees
in exposed places.—Found also in Great Britain. Sterile.
1000. P. leucomela, Mich.; forma angustifolia, (Mey. & Fit.)—
A delicate thread-like Lichen, white, with black lateral hairs, found,
with Cora pavonia, running amongst the grass on the central ridge of
the high land at Diana’s Peak. Fertile.
1001. P. speciosa, F r . ; and var. hypoleuca, Ach.— A flat,
spreading, pale-greenish Lichen, growing on the stems and branches
of trees; may he recognised by its beautifully divided branches.
H. L. Alt. 4. Fertile.
1002. P. picta, (Sw.)—A very minute fine grey Lichen, found
on the bark of decaying stumps of Cabbage-trees in the neighbourhood
of Diana’s Peak. H. L. Alt. 5’4. Sterile.
1003. P. astroidea, Clem.—A greyish-white Lichen, from the
rocks generally in the Island.—Found also in Great Britain.
P l a c o d e i .
Pannaria, Del.
1004. P. rubiginosa, Del.—Found at St. Helena, and also in
Great Britain.
Erioderma, Fr.
1005. E. unguigerum, (Bor.)—A pale-blue Lichen, found
growing on twigs of Cabbage-trees at Diana s Peak. H. L.
Alt. 5-4.
Cora, Fr.
1006. C. pavonia, (Web.) — A pale-blue, ear-shaped Lichen,
found amongst the grass and dead fern leaves, on and near to
Diana’s Peak. H. L. Alt. 5’4. I t grows in patches, of a foot or
more in diameter, and the grass and dead leaves are so embedded in
it as to lead to the conclusion that at one stage the plant exists in a
gelatinous state. Sterile.
Squamaria, D.C,
1007. S. saxicola, Poll.—A rock Lichen, from Rupert’s Hill,
on the outskirts of the Island. Alt. 1'6. Found also in Great
Britain.
Placpdium, D.C., ISTyl.
1008. P. murorum, Hflm. P—A rock Lichen, from Rupert s
Hill, and Munden’s, on the leeward coast.—Found also in Great
Britain.
Lecanora, Ach., ISTyl.
1009. *L. personata, Leight.—Described and figured by Mr.
Leighton as a new species, Trans. Linn. Soc. Lond. vol. xxvii. p. 157,
t. xxxv. f. 6, 7.
1010. L. aurantiaca, (Lightf.); Erytlirella, (Ach.)—A reddish-
brown-coloured Lichen, growing on the rocks near Harding’s
Spring. H. L. Alt. 4.—Found also in Great Britain.
1011. L. a tra , Huds.—A whitish-coloured Lichen, from rocks
generally in the Island.—Found also in Great Britain.
1012. L. ferruginea, Huds.?—A white Lichen from clay
banks in the interior of the Island.—Found also in Great Britain.
1013. L. argopholis, Whlnb. —-A rock Lichen growing on
Bupert’s Hill. Alt. 1-6.—Found also in Great Britain.
1014. L. orosthea, Ach.—Another rock species from the same
locality.—Also found in Great Britain,