Notes on Devonian Plants from Scotland. 8 
there is a strongly defined central axis, suggesting that 
these stems were possessed of a pith which became infil- 
trated with sand before the surrounding parts collapsed. 
There was thus preserved a central axis of somewhat coarse 
sandstone, which now stands prominently above the ex- 
terior and flattened structure. 
The sporocarps of this variety are represented by very 
imperfect impressions. In my former paper,’ I spoke of 
these remains as showing a distinct radial structure, but 
having no direct connection with Parka—association and 
their peculiar structure being the only grounds on which 
relationship could be established. The present material 
renders a more definite expression on this point possible, 
and an excellent figure showing not only their characteristic 
structure, but also the fact that the sporangia are con- 
‘tained in them, is given by Miller,? who also quotes Dr. 
Fleming *® as saying that “these organisms occur in the 
form of circular patches, not equalling an inch in diameter, 
and composed of numerous smaller, contiguous pieces. 
They are not unlike what might be expected to result from 
a compressed berry such as a bramble or the rasp.” Our 
original contention, therefore, that these. circular bodies 
with radial structure represent the sporocarps of Parka, 
may be considered as well founded. 
PARKA DECIPIENS, Flem., var. Minor, Pen. 
This variety is represented by the full sporocarps and 
also by branching: stems and leaves similar to those already 
described. The sporocarps answer to all the characteristics 
already assigned them and further comment is not necessary. 
The stems (Plate I, fig. 3) show the usual rugose sur- 
face and characteristic branching, and in the figure here 
given the generic characteristics of form are well shown. 
Near the base of the figure are what appears to be two 
branches. These, on closer inspection, prove to be separ- 
ate structures lying across the stem of Parka. The lower 
1 Trans. Royal Soc. Can. IX. iv. 
2 Testimony of the Rocks, 443; fig. 121. 
8 Cheek’s Edinburgh Journal, 1831, 
