128 
VII. LASTREA. 
the fronds are almost exactly ovate with the point elon- 
gated. They are bipinnate ; and the pinnae are distant, 
especially below, spreading, the first pah- shortly deltoid, 
the next pair elongate deltoid, and the rest linear-lanceo- 
late, all having 
acute but not at 
all acuminate 
apices. The in- 
ferior pinnules of 
the lowest pinna; 
are much larger 
than the superior 
ones, but in the 
rest of the frond 
the inferior and 
superior pinnules 
are nearly equal ; 
they are obtusely 
ovate-oblong, a 
few of the basal 
ones narrowed to 
a broadLsh stalk- 
like attachment, 
the rest more or 
less confluent. 
The basal pin- 
nules are all deep- 
ly pinnatifid, the 
lobes linear so 
blunt as to be 
almost truncate, 
[Lastrea collina.] 
and having se- 
veral bristly- 
pointed teeth mostly collected near their apices. The sori 
are borne over the whole frond, and except on the inferior 
pinnules of the lower pinnae where they form two lines 
along the lobes, they are ranged in two lines along the 
