» , 1«; V I
h
* :(
i o
:*■
> * li.
I r i '
» * . 1
PUtlyLoma flexuosum, J. S mith.
Pdloea cordata, ^flexuosa, H ooker & B a k er , Syn. Fil., p. 15 3 .
Pdloea intermedia, M e t t e n i o s . — K ühn, in Linnæa, x x x v i . , p. 8 4 .
H ab. — From Austin, Texas, to San Diego County, California, probably
in exposed rocky places. Mexico to Peru.
D e s c r i p t io n . — This is commonly a larger and more rigid
fern than the last, having also a pale reddish-brown stalk, and
ovate or cordate-ovate obtuse but decidedly larger pinnules. The
rachis and all its parts are normally very flexuose, or bent from
side to side in a zigzag manner. The stalk is much like
that of P . andromedæfolia, but is more decidedly flattened on
one side; and the fibro-vascular bundle is the shape of the
expanded wings of a butterfly, having two large spots on the
front edge of the fore-wings, and the body represented by a
V-shaped projection from the upper side.
The band of sporangia is very broad, and the recurved
margin of the fruiting pinnules very narrow. The spores are
globose and minutely warty, or almost muricated.
Mr. Baker considers this plant a variety of P . cordata,
which has a straight rachis and plainly cordate or even sagittate
pinnules. The latter species is found from Mexico to
Ecuador.
Mr. Emerton’s characteristic drawing is taken from a specimen collected
by the botanists of the Mexican Boundary Survey.
• 4 i
A F
I *■
i . ' '
lA I '
!,i
I ‘ '
\ ' i
, t
A «
I !
'I I
ill A i '1
I ' r i