86 BOTANICAL GAZETTE [FEBRUARY 
Thrinax in the Herbarium of the Royal Gardens at Kew, where, 
through the courtesy of the director, Mr. W. T. Thiselton Dyer, 
my Florida material has been compared. 
Seeds of Thrinax Floridana were distributed from the Arnold 
Arboretum in December 1898, as Thrinax species no. 2. 
SESSILIFLORH. Flowers short-pedicellate; perianth lobes 
broadly ovate, acute; filaments nearly triangular, united below 
into a cup adnate to the perianth; stigma flat. 
Thrinax Keyensis, n. sp.— Flowers on low disk-like pedicels, 
ivory-white, faintly aromatic. Fruit from one sixteenth to nearly 
one quarter of an inch in diameter, with thin flesh. Seed three 
sixteenths of an inch in diameter, pale chestnut-brown, pene 
trated only to the middle by the basal cavity. 
A tree with an ashy-gray stem often twenty-five feet i 
height and from ten to fourteen inches in diameter, raised on@ 
base of thick matted roots two or three feet high and eighteen 
or twenty inches wide. Leaves nearly orbicular or truncate at 
the base but rather longer than broad, from three to four feet in 
length, divided for two thirds of their length into lobes which 
are often two and a half inches wide near the middle of the leaf, 
the lowest lobes parallel with the petiole or spreading from it at 
right angles, thick and firm, light yellow-green and very lustrous 
on the upper surface, with bright orange-colored midribs and 
much thickened orange-colored margins to the lobes, 01 the 
lower surface at first coated with hoary deciduous tomentull 
and at maturity pale blue-green and more or less covered with 
loosely attached silvery-white pubescence; ligule thick, pointed 
an inch long and wide, lined at first with hoary tomentum; P 
oles stout, flattened above, obscurely ridged on the lowet sur 
face, tomentose while young, pale blue-green, from three to foul 
feet long, an inch wide at the apex, and from three to foul 
inches wide at the much thickened concave base, coated like the 
broad vaginas of coarse tough fibers with felt-like tomentul - 
Spadix six feet long, stout, spreading, gracefully incurved, © & 
primary branches much compressed, from three to four inches” 
