detailed at length, is, “ Receptaculum arete clausum, demum
plus minus apertum, marginatum, epidermide crassa discolori.
Hymenium læve persistens. Asci fixi, plus minus evoluti, pa-
raphysibus immixtis ; sæpe connati, sporidiis secedentibus. Cupula
centro adfixa, sæpe stipitata, innato-erumpens, liberata,
disco discolori. Substantia duplex, exterior coriacea vel membranacea,
interior subgrumosa. Forma varia.
The species he has divided into four Tribes :
I. ScLEHODERRis. E rum p e n te s , s u b s tip ita tæ , p r im o s p hæ riæ fo rm e s ,
dein ore orbiculari, integro, apertæ. Majores. Species 1- 10.
II. T r ie l id iu m . Pezizoidea, demum rimis a centro hiantibus aperta.
Species 11- 17.
III. Cl it h r is . Hysteriiformes, rima longitudinali dehiscentes. Species
18-24.
IV. E x c ipu la . Innato-sessiles, subcorneæ, vascuüformes, disco minuto
moUi subdeliquescente. Species 25-30.
From Peziza, M. F r ie s observes it differs principally in
the coriaceous cupulæ, which are composed besides, of two substances
; and from Tympanis, in the open cupulæ, and firm
hymenium, which becomes cleft and cracked in age.
Cenangium ferruginosum is so abundant as often to cover
the greater part of the branches of a fallen fir tree. I have re-
ceived it from Mr D r u m m o n d of Forfar, Sir W i l l i a m J a r d
i n e , Bart, and other friends.
Fig. 1. C. ferruginosum, natural size. Fig. 2. A group o f plants in a moist
state. Fig. 3. The same in a dry state. Fig. 4. A cupule divided. Fig. 5.
A portion o f the hymenium, with thecoe and sporidia, magnified.