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508 6. SARCOTHALAME.E. PlcelLapk.
B. Sporidia deliquescent ; theccE with a mouth or ruptile^
fixed. Spherideae.
Thallns clublike, succulent;
thec(F peripherical, horizontal Xylaria. 13S.
Thallns clublike, corky
iheccr peripherical, horizontal Hypoxylon. 139.
Thalhis hemispherical, sessile;
/-^ecrt? peripherical, horizontal .. PEiiiFHOROSTOMA. 140.
Thallus cupshape, stipitate
theccB vertical, immersed Poronia. 141.
Thallus spreading, sessile;
thec(^ vertical, immersed . . .• Nemaisia. 1V2.
TA0////5 spreading, irregular;
theccB clustered, naked Cucurbitaria. 143.
Thallus spreading ; thecce immersed
in the bark; mouths connivent Engizostoma. 144.
Thallus 0; i/zecce immersed,
connivent; mouths erumpent Circinostoma. 145.
Thallus ; thecce immersed,
upright; mouths erumpent Exormatostoma. 146.
Thallus 0; thecce naked;
mouths not discernible Astoma. 147.
Thallus ; thecce naked
77iouths conspicuous Sph.eria. 148.
C Sporidia gelatinous ; thecce globular, projectile;
thallus cupshaped. Theleobilideas.
TheccB when mature projected Thelebolus. 146.
D. Sporidia threadlike, waxy, persisting ; theccefixed,
with a mouth. Nemasporidese.
Sporidia tendril-like Nemaspora. 147.
A. HYSTERiDEiE. Thallus 0; thecce long or round;
mouth opening by one or more sUts; 5pon'^ia fixed, upright;
spores, oval.
I. 135. ACTIDIUM. Fries. Actidium.
Thallus ; thecce round, bursting through the epidermis
of plants ; mouth with many radiatijig slits.