Download PDF

578 221.Dictyd. 9.GASTEROMYCE^. Pl.ceR.aph.
XX. 221.DICTYDIUM. Schrader. Net-mould.
Sporangia globular, pedicelled ; peridium either entirely
or for the greater part breaking off in regular pieces.
1. Dictydium cernuum. Drooping net-mould.
Sporangia gregarious, globular, brownish purple, droop-
ing, umbilicated at the tip.
Dictydium umbilicatum, Schrader N. Gen. I, H.
Mucor canceliatus, Batsch Fungi, 2, 135.
Cribaria cerniia, Persovn Syn. 189,
Dictydium cernuum, Esenbeck Syst. 2, 33,
On rotten wood.
2. Dictydium splendens. Resplendent net-mould.
Sporangia upright, roundish^ shining ; pedicells bent,
purplish-brown; sporidia yellow,
Dictydium splendens, Schrader N. Gen. 1.4,
Cribaria splendens, Persoon Syn, 191.
On the trunks of fir-trees.
F. SxEMONiTiDEiE. Sporangia regularly formed, pedi-
celled; peridium thin, single, vanishing away ; Jlocci free^
netlike, perforated by the stem.
XXI. 222. STEMONITIS. Persoon. Thread-mould.
Sporangium globular or long ; peridium membranaceous,
vanishing ;j^occi entangled, netlike, perforated by the stem,
diffluent,
a. Flocci in an ovate mass.
1. Stemonitis papillata. Papillated thread-mould.
Sporangia scattered, reddish-brown, globular ; pedicell
perforating the flocci to the top.
Stemonitis reticulata, Roth Cat. Bot. 1,223.
Stemonitis papillata, Persoon Syn. 188.
On bared branches of oak-trees.
2. Stemonitis ovata. Eggshape thread-mould.
Sporangia scattered, blackish, ovate or roundish ; pedicell
perforating half-way through the flocci.
stemonitis nigra, Gmelin Syst. Nat. 2, 1467.
Stemonitis ovata, Persoon Syn. 189,
Stemonitis atrofusca, Persoon Disp. 11,
On rotten wood.