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510 136.Hypod. 6, SARCOTHALAME^. PlcelLapk.
6. Hypoderma xylomoides. Xyloma hypoderme.
T^eccE elliptical, flat, shining, black.
Xyloma hysteroides, Persoon Syn. 106,
Hypoderuia xjlomoides, De Cand. Syn. 823.
On dead hawthorn and laurel-leaves.
III. 137. HYSTERIUM. Persoon. Hysterium.
Thallus ; thecce long, naked ; mouth a simple line?a- slit.
—On old dead wood.
1 Hysterimn mytilinum. Mussel hyster'mm.
Thecce aggregate, black-green, upright, lenticular,
streaked crosswise, slightly pedicelled.
Hysterium mytilinum, Persoon Syn. 97,
On the bark of abies excelsa.
2. Hysterium pulicare. Flea-hrown hysterium.
Thecce gregarious, oblong, blunt, streaked, black; lips
blunt.
Hysterium pulicare, Persoon Syn. 9S.
Liclien scriptus B, Lightf. Scot. 2, 801.
Oh dead branches of oak-trees.
3. Hysterium angustaium. Narroiv-mouth hysterium,
TheccB crowded, linear, parallel, black ; lips sharp.
Hysterium angustatum, Persoon Syn. 99.
On decayed wood.
B. Sphertde^. Thallus fleshy, leatherlike, crustlike,:
or ; thecce fixed, roundish, opening by a roundish mouth,
sometimes remaining closed ; sporidia long, mostly clubshape,
twisted, deliquescing into a liquid slime; sporce. oblong,
ringed.
IV. 138. XYLARIA. Hill. Xylaria.
Thallus long, clubshape, fleshy ; thecce roundish, in the
circumference of the thallus ; mouths circular.
a. Growing on the earth.
1 . Xylaria militaris. Soldierlike xylaria,
Thallus yellowish red, head rough, rather tubercular
mouth slightly prominent.