Fig. 5. S. Hederæ.
THIS generally rises through the cuticle of the leaf in a somewhat conical form.
Fig. 6. S. betulina.
THIS seems to swell the cuticle, forming an oblong black, speck. on the surface, and a woolly ferruginous margin.
TAB. CCCLXXII.
Fig. I. SPHÆRIA salicina.
This differs but little from the S. Lauri, t. 371 Fig. 4, and ought to follow it. The mouth on the upper side of the leaf has a smaller covering, and the bottom of the sphærule by its peculiar construction, after penetrating the leaf, forms a black circle, sometimes with a black dot in the middle.
Fig. 2. S. Perforata.
THIS forms roundish holes through the cuticle of the sticks on which it is found, issuing from the cortex either single or in bundles, with their mouths a little beneath the holes.
Fig. 3. S. ellipsosperma? Bull. 492. Fig. 3.
THE seeds were so conglutinated together in our specimens, that we could not positively discern their elliptic forms, though we were almost confident they were of that figure.
Fig. 4. S. bombardica. Bolt.
A VERY common Sphæria, often spreading over old stumps of trees; and often one over another, not unaptly resembling grains of gun-powder. In the young state, a white powder issues from the mouths, afterwards a black jelly or powder, till at length they become empty sphærules.
Fig. 5. S. Corticis.
THIS Fungus reaches entirely through the cortex. The mouth perforating the cuticle swells it a very little, and sometimes a stain appears round it.
