6 Sarrorp: Nores OF A NATURALIST AFLOAT—II 
sometimes regarded as a variety of the common P. 
gia Polypodium phyllitidis; P. polypodioides; Phyma- 
s exiguum Und. (Polypodium Swartzii Baker), com- 
mon on Cayo Largo, where it climbs over bushes; Paltoni- 
um lanceolatum, growing on trees, on old Rhodes Key;and _ 
on the shores of Biscayne Bay, at the eastern extremity 
of the Keys, occur all the species mentioned above to- 2 
gether with Dryopteris thelypteris and D. patens. 
The only conifer is Pinus heterophylla, also known as — 
the Cuban pine, which is also found on the Bahama = 
Islands. On the keys it is associated with Thrinax 
microcarpa and other palmettos. Be 
Some of the palmettos are stemless or nearly so, as in in : 
the case of Coccothrinax Garberi, which grows along the . 
shores of Biscayne Bay. Others have tall slender trunks 
and crowns of round fanshaped leaves, as in Coccothrinax 
os ona the blades of which are silvery white beneath 
_ and yellowish green above with orange-colored ligule at 
The drupes of Coccothrinax are dark purple or 
hile those of the genus Thrinax are white. 
a of T. keyensis, borne on disclike pedicels. 
| ‘The latter species is characterized by a large base of 
é Tt Ge a Fade somewhat tapering t 
: ae with the om bases of the 
On several of the keys oceurs Agave decipiens, a plas 
ace e-green color resembling Aloe vera but useless 
ts saponaceous roots. 
the valuable Agave sisalina, which was in 
rida about th: 834 by 
