PERISP011IACEI.
405
315. ERYSIPHE, Hedw.
Mycelium arachnoid. Appendages floccose, simple or irre-gularly branched.
Asci containing 2 sporidia.
1. Linkii, IJn. On leaves of Artemisia.
2. lamprocarpa. On leaves of Oichoraceee.
Asci containing 3-8 sporidia.
3. graminis. On leaves of cereals and grass.
4. Martii. On leaves of peas, etc.
5. Montagnei, Lev. On leaves of burdock.
6. tortilis, Lk. On leaves of cornel.
7. communis, Schlecht. On leaves of various plants.
316. CHJETOMIUM, Kze.
Perithecium thin, brittle, mouthless. Asci linear, contain-ing dark, lemon-shaped sporidia.
1. datum, Kze.; Grev. t. 230. Ou damp straw.
2. cliartarum, Ehb. On damp paper.
3. glabrum, B. On damp straw.
317. ASCOTRICHA, B.
Perithecium thin, free, mouthless, seated on loose, branched,conidiiferous threads. Asci linear, containing dark, ellipticsporidia.
1. chartarum, B. (no. 116, with a Jig.). On damp paper.
318. EUROTIUM, Lk.
Perithecia reticulated, vescicular, coloured, attached to muce-dinous threads. Asci delicate.
1. herbariorum, Lk.; Grev. t. 164./. 1. On plants in herbaria. It issupposed that this is merely an ascigerous state of Aspergillum.