Pl. cell.aph. 9. GASTEROMYCE. 212. Didym. 571 
2. Didymium testaceum. Pearly skin-mould. 
Sporangia sessile, roundish, hemispherical, flesh-colour, 
afterwards whitish. 
Didymium testaceum, Schrad. N. Gen. Pl, 1, 25. 
Diderma testaceum, Persoon Syn. 167. 
On decayed leaves; autumn. 
3. Didymium difforme. Irregular skin-mou’'d. 
Sporangia sessile, smooth, difform ; outer peridium snaw- 
white; inner bluish; sportdia dull-brown. 
Reticularia angulata, Gmelin Syst. Nat. 2, 1472. 
Diderma difforme, Persoon Syn. 167. 
On the stems of the potatoe-plant. 
XII. 213. DIDERMA. Link. Tall-mould. 
Sporangium roundish or globular; peridia double, both 
membranaceous, bursting; outer chaffy; columella 0; spo- 
ridia crowded. 
Diderma muricolum. Vall tall-mould. 
Sporangium roundish, lobed, rather angular, sessile; 
outer peridium white; inner brown; sporidia black-brown. 
Diderma Muricola, Link in Berl. Mag. 3. 
Diderma difforme, A/G. et Schwein, Fung. 90, 
On mosses. 
XIII. 214. CIONIUM. Link. + Flock-mould. 
Sporangium globular, pedicelled ; peridium single, mem-. 
branaceous, bursting, separating into scales; columella 
distinct. 
1. Cionium iridis. Flag flock-mould. 
Sporangium globular, pedicelled ; peridium grey ; pedivelt 
yellow, thickest at bottom. 
Cionium iridis, Ditmar in Sturm. Deutsch. Fl. 3,1. 
On the leaves of the yellow water-flag ; summer. 
2. Cionium farinaceum. _ Floury flock-mould. 
Sporangium globular, pedicelled ; pertdium grey ; pedicelt 
grey, thickest at bottom. aes 
Didymium farinaceum, Schrad. N. Gen. 26. 
Trichia compressa, Z'rentepohl in Roth Cat. Bot. 1, 229. 
Physarum melanospermum, Persoon Disp. 3. 
Physarum farinaceum, Persoon Syn. 175, 15. 
On the branches of pine-trees, or the mosses on them. 
Sporangia sometimes unite in pairs. 
