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426 lOl.Roccel. 4..CENOTHALAME^. PLcell.aph,
Coralloides corniculatum fascicolare tinctor'nim fuci teretis facie, Dilkn
Muse. 190.
Lichen Roccella, Lin. S. P. 1622; Engl. Bot. 211.
Parmelia Roccella, Achar. Meth. 274.
Roccella tinctorla, Achar. Lich, Univ. 439.
On rocks by the sea-side.
Thallus used in dyeing, when moistened with urine or
volatile alkali, to dye a beautiful but perishable purple, and
to give a fine bloom to other colours.
2. Roccella phycopsls. Tanglike rock-moss.
Thallus cylindrical, compressed, rather angular, grey
greenish, very much branched ; branches and twigs nearly
even-topped ; apothecia scattered, centre hoary, flat, at last
naked, black ; thalloid harder slightly irregular, very small.
Lichen fucoides, Dickson Crypt. Brit. 2,22.
Roccella phycopsis, Achar. Lich, 440.
On rocks by the sea-side.
3. Roccella fuciformis.
WrackUke rockmoss.
Thallus flat, grey, greenish, two-forked, jagged; jags
narrow ; apothecia marginal.
Lichenoides fuciforine tinctorium,corniciilislongioribus et aciitioribus,
DiUen Muse. 1 68.
Lichen fuciformis, Lin. S. P. 1614 ;
Engl. Bot. 728.
Parmelia fuciformis, Achar. Meth. 258.
lloccella fuciformis, Achar. Lich, 440,
On rocks by the sea.
XII. 102. NEPHROMA. Acharius. Kidney-moss.
Thallus leaflike, leatherlike, membranaceous, expanded,
lobed; underneath free, naked or slightly villous ; apothecia
resupinate, formed above from the lobes of the thallus,
produced, ascending; proligerous flake kidneyshape, adnata
to the thallus on its under surface, coloured, flat; inside
cellularly streaked ; thalloid edge bent inwards, outwardly
close to the apothecia, inwardly more remote, rather raised.
1. Nephroma resupinatum. Doivn-lying kidney-moss.
Thallus chestnut colour, livid, rather pale, downy, granular;
fertile lobes short; flake of the apothecia red.
Lichenoides saxatile fuscum, peltis in aversa foliorum superficie localis,
RaiiSyn. 11,91.
Lichen resupinatns, Lin. S. N. 1615.
Peltigera tomentosa, Hoffm, Germ. 103.
Peltidea resupinata, Achar. Meth. 289.
Nephroma resupinata, Achar. Lich. 522.
On the ground among roots of trees and on hills.
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