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189
APPENDIX A.
CLASSIFICATION & DESCRIPTIONS OF FUNGI
CONTAINED IN
THIS YOLUME.
-«o*-
JECIDIACEI.
Peridium elongated
—
separating in threads . . . . Bccstelia.
. .
rupturing irregularly
. . Feriderniium,
Peridium abbreviated, or senii-iinmersed . JEcidium.
Peridium immersed
Enclophyllum.
RCESTELIA, Reb.
Peridium elongated, at length opening by lateral fissures, or a
terminal lacerated mouth. Spermogonia on the opposite
surface, on the same or on difl'erent leaves.
Roestelia cancellata, Reb. Pear-leae Rcestelia ; spots
yellow, then red, prominent; peridia split to the base into lacinia*,
which remain united at the apex.
— On Pear leaves. Not very
common. Autumn. (Plate II. iigs. 20, 21.)
Roestelia cornuta, Tul. Horn-like Rcestelia; spots
rusty-brown; peridia cylindrical, slightly curved, yellowish -
brown ; spores greyish, at length brown.— Uu the under surface
of the leaves of Mountain Ash. Not common. August. (Plate II.
%s. 18, 19.)
Rcestelia lacerata, Tul. Lacerated Rcestelia ; peridia
clustered in tufts, brown, elongated, splitting to the base in
segments ; spores light brown.— On the under surface of the
leaves, and on the petioles and fruit of the Hawthorn. Not.-
'
uncommon. May to July. (Plate II. figs. 23, 20.