350 KIDSTOX : THE FLORA OF THE CAKBONIFEIiOUS PERIOD. 
III.— BOTHRODENDRE.E. 
Bothrodendron Lindley and Hutton. The Bothrodendra form 
one of the most interesting genera of the arborescent Lycopods. 
Their stems ramified by dichotomous division 
{Bothrodendron minutif olium Boulay sp., 
Plate LI v., fig. 1). On the mature stem 
the small distant leaf-scars, surmounted with 
a small cicatricule, are oval or oval with more 
or less prominent lateral angles, and contain 
three punctiform cicatricules. The bark 
between the cushionless leaf-scars is orna- 
mented in all cases with perhaps one 
exception. In the common Lower and 
Middle Coal Measure species, Bothrodendron 
minutif olium Boulay sp., it is beautifully 
adorned with a series of short, transverse, 
irregular lines and 
corrugations, which 
divide the outer 
surface into very 
numerous small, 
irregular, vermicu- 
lar, oblong shagreen, 
each particle of which 
bears a row of little 
pit-like dots, Text 
Fig. (). This beautiful 
structure can only be 
seen with a lens, the 
leaf-scars themselves 
being only about one- 
twentieth of an inch in diameter. 
On the young branches of Bothroden- 
dron minutif olium, and possibly on other 
species also, we find a most interesting con- 
dition of the leaf-scar. The young branches bear finely-corrugated 
Fig. 5. — Ltpidophyf- 
lum ( Lepidostrohus ? ) 
maju-^ Brongt. (No. 
2527. ) Natural size. 
Fig. 6. — Bothrodendron 
minnfi/o/iiun Boulay 
sp. a, Portion of stem, 
natural size ; h, leaf- 
scar and ornamenta- 
tion of bark, enlarged. 
