TJ3NIOPHYLLE.gi;— LEPIDOXYLON. 255 



on the rig-lit is more or less crumj^led. No leaves are shown to the right of 

 the profile of the stem. 



The scales are very much longer and closer than shown in fig. lb in 

 the Coal Flora, and form by this imbrication a dense thatch. I am unable 

 to detect any trace of a median nerve in their thin, slightly dorsally convex 

 lamina. The minute, roundish, irregularly disposed, slightly prominent 

 cicatrices, ranging from 1 to 3 mm. distant, may be seen in the lower 

 part of the trunk segment to correspond to the positions of the inflated 

 scale bases. The enlarged detail of these scars, which should be marked 

 by a miniTte central punctation, is disproportionate as comjDared with the 

 scales in the published figure. 



The leaves, which are relatively few, are generally inclined slightly 

 downward near the trunk. None of the leaves on the slab, except a few 

 erect bases near the top, issue from the upper surface of the trunk, and I 

 am iinable to find any that fork, the dichotomies illustrated in the type 

 figure being cases of crossing or mere superposition, as is shown by care- 

 fully uncovering them. The figure fails to show that the leaves on the left 

 and the larger ones at the top of the portion delineated in the Coal Flora 

 come from beneath the trunk and are exposed within its profile, at a slightly 

 lower level, by reason of the cleavage of the shale from their glossy surface. 



As to the characters of the leaves or appendages themselves, it is 

 sufficient to say that there seems to be no essential distinction between 

 those of the type segment and those of Tmiioj^hylhim. In the large segment 

 of Lepidoxylon anomalum they are apparently joined by a narrowed base to 

 small Stigmarioid cicatrices, the texture is very finely lineate, perhaps by the 

 longitudinal rows of cells, the lax, often wrinkled, and apparently cylin- 

 drical, or possibly cavernous, interior is traversed by a loose, flexuose, often 

 slightly twisted, band of nerve bundles, which is parted to supply a strand 

 for each of the u-regularly occurring smaller leaflets or branch appendages, 

 and the latter are likewise continued linear, with the same features, except the 

 smaller size, from their Stigmarioid points of origin. Usually these irregu- 

 larly disposed branchlets are extremely distant, but in a few cases two 

 or three originate close together, while in one case, low on the left, four 

 spring close together from the parent le'af in a manner extremely sugges- 

 tive of the Desmiophylliim, mentioned in the remarks on TcEniopliyllum lati- 

 folium. 



