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436 108. Pbyscia. 4. CENOTHALAME^. PI. cell. aph.
at the tip; apothecia shieldlike, slightly membranaceous,
formed underneath from the thai! us, free, affixed to the
same by the centre; proligerous flake forming the centre,
hollow, coloured, covering the apothecia entirely above;
mside similar, streaked, with a few cellules; ihalloid border
bent inwards.
1. Physcia physodes. Wracklike physcia.
Thallus slightly stellate, sea-greenish white; jags tiled-
like, sinuate, many-cut, slightly convex, bald ; tips inflated,
ascending; underneath blackish brown, naked ; apothecia
red, edge not cut.
Jjichenoides ceiati>phjllon obtusiiis et uiinus ramosum, Raii Syn,16,85.
Lichen pliysodes, i/n. S. P. 1610; Engl. Bot. 126,
Lobaria pliysodes, IlojJ'm, Germ. 150.
Parmelia physodes, Jchur. Meth. 250; Lich. 492.
On palings, trunks of trees, and rocks.
2. Physcia diatrypa. Pierced physcia.
Thallus slightly stellate, greenish white; jags sinuated,
many-cut, flattish, smooth, perforated and with soredise
tips inflated ; underneath wrinkled, folded, black ; inter-
stices white; apothecia pale red; edge not cut.
Lichen pertusus, Schrud. Fl. Germ. 06.
Lichen dialrypus, .^cJiar. Prod. 116; Engl. Bot. 1248.
Lobaria terebrata, Iloffin. Germ. 151.
Parmelia diatrypa, Achar. MelJi. 251 ;
On the bark of trees.
Lich. 493.
XIX. 109. PARMELIA. x\charius. Border-moss.
Thallus leaflike, leatheriike, slightly membranaceous,
flat, spread out, pressed out, round and stellatel}^ lobed or
many-cut, jagged; underneath fibrillous; jags all equal at
their tips; apothecia shieldlike, slightly membranaceous,
formed underneath from the thallus, free, connected onlj^
by a central point; proligerous fiake forming the centre,
hollow, coloured, covering the apothecia entirely at top
inside similar, streaked, with a few cellules; thalloid border
bent inwards.
] . Parmelia glomulifera. Ballbearing border-moss.
Thallus cartilaginous, stifl", round, livid, smooth, interspersed
v;ith blackish green pulvinuli ; underneath ochry
white, downy; lobes sinuately jagged; jags angular and
bordered ; apothecia reddish chestnut, border wrinkled.