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APPENDIX. 191
^cidium Soldanellse, Hornscli. Soldanella Clusteu-
Cups ; Spots obliterated ; peridia — solitary, scattered over the
inferior surface ; spores orange. On the under surface of the
leaves of Soldanella alpina.
JScidium Tragopogonis, Pers. Goatsbeaud Clustee-
Cups ; spots obliterated ; peridia scattered, torn, wider above ;
spores orange, at length black.— On stems, leaves, and involucres
of common Goatsbeard. Yery common. May to June. (Plate I.
figs. 1—3.)
^eidium Euphorbise, Pers. Spuege Cltjstee-Cups ;
spots obliterated, leaf thickened ; peridia scattered or crowded,
distinct ; spores orange.— On the under surface of the leaves of
Spurge. Common, May to June.
Sect. II.
Peridia in tufts or clusters.
a. MongatcB.
.^eidium Berberidis, Pers. Berberry Cluster-Cups ;
spots roundish, bright red ;
subiculum thickened ; peridia in
subrotund or oval patches, often elongated ; spores orange. On
leaves, peduncles, and fruit of the common Berberry. Common.
May to July. (Plate I. figs. 7—9.)
.fflcidium Thalictri, Grev. Meadotv-Uue Cluster-Cups ;
collected in roundish clusters ;
orange. On Thalidrum alpinum.
peridia oblong ; spores bright
Not uncommon in Scotland.
.fficidium crassum, Pers. Buckthorn Cluster-Cups;
spots yellow-brown, subiculum thickened ; peridia crowded into a
roundish heap, at first globose, yellow, at length
orange. On Rhamnus ccitharticus and R.frangula.
open ; spores
Common.
.fficidium Periclymeni, DC. Honeysuckle Cluster-
Cups ; spots variegated, yellow and brown, subiculum thickened ;
peridia — sometimes elongated, in roundish or efi'used heaps ; spores
orange. On the under surface of Honeysuckle leaves. Not common.
June to August. 'o^
/3. Toculiformae.
-Slcidium Calthse, Grev. !Marsh-Marigolp Cluster-
Cups ; aggregate ; peridia somewhat campanulate, with numerous
minute marginal teeth; spores bright orange, subglobose or oval.
— On leaves and petioles of Caltha palustris. Margin of peridia
pale and brittle. Bare. Spring.
JEcidium Ranunculaceanun, DC. Crowfoot Cluster-
Cups; spots obliterated, subiculum thickened; peridia in irregular
heaps, densely crowded together ; spores orange.—On leaves
of various Ranunculaceae ; very common on jK. Ficaria, not uncommon
on R. repens, more rarely on R. acris and R. bulhosm
Spring. (Plate II. figs. 12—14.)