119 
ceolatum, but in general only the half of the frond; and if 
they should exceed that, the additional space is so short as to 
be unworthy of notice, and at least one-third of the sie in the 
lower part is destitute of sori. 
The Polypodium Phyllitidis of Linn., considered by some as 
the genuine Calaguala, differs from it in having narrower and 
proportionably shorter fronds. They also abound in transverse 
nerves, which are wanting in those of the Calaguala, in which 
their place is supplied by branching veins which are not readily 
distinguishable, and are quite different from the short lateral nerves 
commonly met with in other species of Polypodium with simple 
fronds. The sori of Polypodium Phyliitidis are scattered over 
the whole under surface of the frond, as Linnzeus observes in 
his Species Plant, 1543, and as they are represented in the figure 
of Petiver, Filic. 5. p. 6. f. 10, and by Manel in 2 toe Epes. 
tom. 6. p. 124. fig. 12. ors 2egnrp od; 
The Puntu-puntu, which is the second species. of Calagtinks 
brought to us from Peru, and which most resembles the P. Ame- 
ricanum of Quer, differs from the latter in the greater size and 
thickness of its fronds, and in its form not being so perfectly 
lanceolate. The spots of the fructification are successive, that 
is, between the transverse nerves there is no more than one se- 
ries of sori, whereas in P, Americanum there are two consistent 
series ; and finally the fructifications do not occupy the whole under 
surface of the fronds, as in those.of the latter according to the plate 
of Quer, who reduced this species t to the P. Phyllitidis of Linn. ; 
and my Puntu-puntu corresponds exactly ‘with the Sefton 
given by this. author of Polypodium crassifolium, and with the 
figure of the Phyllitidis maculata, amplissimo folio of Petiver, 
Fil. 1. p. 6. f.8. The third species of root which is brought 
from Peru under the name of Calaguala, is a new species of 
