VII LASTREA. 
119 
sembling the infertile fronds of L. cristata. The former 
are erect, larger, pinnate, the pinnules being distinct below, 
adnate above, oblong-acute, inciso-serrate or lobed, with 
aristate teeth, the whole of the 
frond being fertile, and the in- 
ferior pinnules larger in a small 
degree than the superior ones. 
Later in the summer another 
kind of frond is produced, large, 
stout and fertile, but with the 
pinnules of the same form as those 
of the earlier barren fronds. The 
pinnae, especially in the earlier 
fertile fronds, are twisted so that 
their upper face instead of lying 
in the plane of the frond is di- 
rected towards the zenith, the 
fronds being nearly or quite erect. 
The vernation is circinate, with 
the pinnae flat and rolled inwards 
from the point as in L. cristafa. 
One of the accompanying figures 
(marked !) represents the earlier 
form of fertile frond, and the other 
(*) the anomalous form which is 
produced later in the season, but 
the differences between them are 
not very obvious in drawings on 
so reduced a scale. In this va- 
riety, the stipes is about a third 
the length of the frond, sparingly 
furnished with blunt ovate pale- 
coloured scales, similar to those 
on the other two forms. 
The variety spinulosa has a stout decumbent somewhat 
tufted caudex, and nearly erect fronds, which grow from 
one to two or three feet high. In vernation the pinnae are 
[Lastrea uligmosa.*] 
