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A EUROPEAN PETRIFACTION WITH FOLIAGE. 492 
sclerenchyma-like appearance of the hairs which apparently assisted in mis- 
leading Wieland as to their nature in his specimens, is, of course, very 
noticeable, and does give the mass the look of a selerenchymatous tissue in 
places : however, the thickening of the ramental walls seems a well-marked 
feature of this plant, as a glance at the photograph fig. 5, Pl. 19, will 
demonstrate. 
Wieland’s figure (his p. 83), with which comparison should be made, is 
said to be (p. 92) “extensively retouched” by himself, and the group of 
selerenehyma-like cells he has drawn in what he considers the lower scleren- 
chyma region, were actually, I think, hairs probably similar to those of the 
present species. 
A specific name must be given to this baby Bennettites, though it is not by 
any means impossible that some old trunk already known may be the same 
species. As the details of the foliage are not known for any other European 
form, they are really the vital points in the diagnosis. Needless to say it is 
very difficult to draw up a diagnosis from a single specimen, but it is a task 
often laid upon a paleontologist who deals in rarities. 
I name the species in honour of Dr. Scott, F.R.S., to whom all palieonto- 
logists are indebted. 
BENNETTITES SCOTTII, sp. nov. 
The whole specimen is 8°5 em. in height, but the stem itself is only 3'5 em. 
The greatest diameter is about 7x5 em. including leaf-bases. The leaf- 
bases are rhomboidal, about 1x'8 em. Axis distinctly oval. Woody 
cylinder oval, at its thickest part, with a pith about 1°8 x 1:1 cm., there are 
40 tracheids on the radius of secondary wood. Tracheids up to 25 x 30 p. 
Encireling the upper part, the leaf-bases round off to form rachises bearing 
fronds still folded in the bud. Above the apex of the stem the leaf-bases 
are replaced by pseudo-leaf-bases of large-celled, thick-walled ramenta. 
Leaflets up to 15 and perhaps more on either side of each frond. Single 
leaflets with upper and lower surfaces well differentiated ; cuticle and 
thickened hypoderm on upper side; thinner epidermis with a thick weft of 
attached hairs on the lower side of many pinnee. Vascular bundles parallel, 
close together, from 5 to 23 in each pinna. Middle of leaflet more delicate 
and less hairy than the rest ; the lower corners having several layers of 
thickened hypoderm. Vascular bundles collateral with well marked bundle- 
sheaths, and supporting strands of sclerenchyma. Xylem apparently only 
centripetal. No transfusion tissue recognised, [The specimen too young to 
bear fructifications. | 
