50 W. Carruthers—The Foliage of Sigillaria Serlit. 
sloping very gently towards the apex. From the decrease in width 
it appears to me certain that the leaves were not less than two feet 
long. One leaf shows quite clearly the attachment to the cushion or 
permanent base. There is a slight constriction at the base of the 
leaf, and the three vascular scars of the cicatrix are seen to pass into 
the leaf as three similar nerves, which gradually approach each 
other as the leaf narrows until they reach the summit, where they 
are so close that they appear to be a single nerve. 
The elevated cushion and alternating verticils of the leaf-bases 
suggested to Goldenberg the placing of Sigillaria Serlii, Brongn., in 
the genus Lepidophloios. The fossils included under this designation 
have cushions or permanent bases to the leaves, sometimes very much 
elongated, as in L. crassicaulis, Brongn.; the cicatrix is more or less . 
rhomboidal, and the three vascular scars are arranged as in Sigillaria 
Serliit, Brongn. The arrangement of the leaves on the stem is also 
the same as in the Clathrate Sigillarias, that is, in alternating verticils, 
the bases of the leaves in the first, third, and fifth rows being per- 
pendicular to each other, those of the intervening verticils, the 
second, fourth, sixth, and so on, are perpendicular or opposite to each 
other. The leaves of several species of Lepidophloios have been 
figured, and.they are of precisely the same structure as those of . 
Sigillaria. Whether the two groups can be separated generically is 
of less importance than the bearing these facts have upon the ques- 
tion of the affinities of Sigillaria with Lepidodendron. There has 
never been any question as to the affinities of Lepidophloios with 
Lepidodendron, nor of the propriety of classing the Clathrate 
Sigillarias in the same genus with the fluted species. But the 
affinity between the fossils of the type of Sigillaria Serlu, Brongn. 
and Lepidophloios, or rather the identity in all essential points 
between the two as far as the points we have specified are concerned, 
strengthens the view generally entertained that Sigillaria is a Lyco- 
podiaceous plant. And this view is further established by what is 
known of the internal structure of the stem when properly under- 
stood, and by the little we know of the fructification. 
The specimen which forms the subject of Plate II. was obtained 
by the late Mr. Charles Moore, F.G.8., of Bath, from the Coal- . 
measures of Radstock, Somerset, and has been obligingly sent up 
for examination by the Rev. H. H. Winwood, M.A., F.G.S., the Hon. 
Sec. Bath Field Club, to whose efforts the city of Bath is mainly 
indebted for the preservation of Mr. Charles Moore’s admirable 
Palzontological Museum within the walls of its Literary and Scientific 
Institution, where for so many years it had been deposited by Mr. 
Moore, and formed one of the principal attractions of his native city. 
EXPLANATION OF PLATE II. 
Sigillaria Seri, Brongn. One-fourth nat. size. 
. Portions of leaf twice the nat. size, a. from near the base, 0. the apex. 
. Leaf scars from the specimen figured, twice the nat. size. 
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