142 Transactions British Mycological Society. 
Microcera tasmaniensis, contains examples which exactly match 
the latter and their structure leaves no doubt as to their 
identity. It is not Microcera of Desmazieéres. 
The conidial fructifications arise either from a narrow, rather 
loose weft of hyphae, round or at one side of the scale, or from 
the hyphae which permeate the scale, without any external 
stroma. The smaller examples (Plate IV, fig. 2), which constitute 
Microcera tasmaniensis, are clustered, sessile, pulvinate, or sub- 
globose, up to 0-3 mm. diameter, or sometimes discoid. In the 
dry specimens, they are white and longitudinally tomentose 
externally, and yellowish and subtranslucent in the centre, but 
when fresh, they are salmon pink (fide McAlpine). The more 
recent specimens on Planchoma retain the pink colour in the 
centre. The outer layers are composed of parallel hyphae, 
4p diameter, rather closely septate, running uniformly from 
base to apex: they form a wall, several hyphae thick, which 
sometimes projects above the central disc. The central disc 
consists of close-packed conidiophores, bearing three-septate, 
fusarioid spores. The internal tissue of the sporodochium, be- 
neath the disc, is parenchymatous. The conidia (Plate V, fig. 13) 
are slightly falcate, or almost straight, ends obtuse, 44-58 x 
5-6. The majority are three-septate, but four- and five- 
septate examples have been observed. 
_In the type of Microcera Mytilaspis some of the sporodochia 
answer to the above description, but the majority are larger 
and more fully developed (Plate IV, fig. 1). The latter are dis- 
tinctly discoid, usually oval in plan, up to 0-8 mm. long and 
o-6 mm. broad, either sessile on the marginal stroma, or shortly 
stalked. The upper surface is concave, and the outer wall of 
parallel hyphae is continued well above the disc and strongly 
incurved. The specimens have exactly the appearance of a 
Peziza. In the shallower sessile specimens, the tissue under- 
lying the disc is small-celled parenchymatous, but in the stalked 
forms, the cells in the centre are arranged more or less in longi- 
tudinal parallel rows. In the latter case, however, they are 
4—6 p broad, septate at fairly close intervals (10-20 p), with the 
segments somewhat inflated; the stalk is not composed of long, 
slender, uniform hyphae as in Microcera. The conidia in Micro- 
cera Myttlaspis are of the same type as in Microceratasmaniensts, 
and measure 44-54 x 5-6 p. 
In the sporodochia found with the Calonectria, the conidia are 
30-36 x 4-5, three-septate, occasionally four-septate, almost 
straight, or curved, or straight with falcate tips, ends obtuse. 
A few conidiophores at the margin of the disc may be up to 
100 long, unbranched, and bear conidia laterally and ter- 
minally. The conidiophores in the disc are usually short, re- 
