KIDSTON : THE FLORA OF THE CARBONIFEROUS PERIOD. 377 
Plate LIV. 
1. Bothrodendron minutifolium Boulay sp. Bonnington Pit, 
Kilmarnock, x4yrshire. Hor. Whistler Seam. Lower 
Coal Measures [1568]. Specimen from Rev. D. Lands- 
burgh, D.D. At a is seen the fully-developed stem 
with distant cushionless leaf-scars ; at 6 is shown the 
young condition where the stem bears rhomboidal areas 
in which are placed the leaf-scar ; at c an intermediate 
condition is represented. About three-quarters natural 
size. 
2. Bothrodendron minutifolium Boulay sp. Part marked b 
in fig. 1 enlarged to show the rhomboidal fields or cushions 
bearing the leaf-scars. 
3. Bothrodendron minutifolium Boulay sp. Part marked c 
on fig. 1 enlarged to show the still slightly elevated leaf- 
scar and the disappearance of the field. 
4. Sigillaria Sauveuri Zeiller. Longton Hall, Longton, 
Staffordshire. Hor. Great Row Rock. Middle Coal 
Measures [2199]. Collected by Mr. John Ward, F.G.S. 
Sigillaria of the Rhytidolepis Section, showing approxi- 
mation and reduction in size of the leaf-scars, which 
probably represents an enfeebled condition of growth. 
About three-quarters natural size. 
5. Stigmariopsis. Cast of the pith cavity. Specimen com- 
municated by Graf zu Solms-Laubach from one of the 
examples described in his paper " Uber Stigmariopsis 
Grand 'Eury."' Dames u. Kayser. Palceont. Abhandl. 
New Series. Vol. IL, part 5, page 223, 1894 [2601]. 
About three-quarters natural size. 
