158 MONADELPHIA DODECANDRIA. Pierospermum., 
Stem erect, with many simple, erect branches ; when 
growing on a good soil from two to five feet high, smooth, 
except for a few small, depressed, stellate hairs. Leaves 
petioled, alternate, hastate, linear-lanceolate ; margins waved, 
and deeply serrate-crenate, pretty smooth on both sides, 
Petioles from one to two inches long, round, Stipules subu- 
late, « Peduncles axillary, solitary, short, two-flowered ; pe- 
dicels three times longer than the peduncles, joined near 
the apex. Bractes about the base of the peduncles and pedi- 
cels, subulate. Flowers nodding, large, bright red, expand- 
ing at noon and dropping by day-light next morning. 
Calyx double ; the exterior one three-leaved, caducous ; the 
interior one deeply five-parted ; divisions lanceolate, bristly. 
Petals five, triangular, inserted by evident sutures into the 
base of the staminiferous tube. Stamens fertile ; filaments fif- 
teen, short. Anthers sub-sagittate. Sterile filaments (or nec- 
taries,) five, linear-Janceolate, nearly the length of the corol, 
one between every three fertile filaments, and with them unit- 
ed at the base into a short conical tube. Germ half hid in the 
tube formed by the base of the filaments, Style the length of 
the sterile filaments. Stigma clavate, and spirally twisted. 
Capsule sub-globular, bristly, five-celled, five-valved. Seeds 
from eight to twelve in each cell, disposed in two vertical 
rows, 
PTEROSPERMUM. Schreb. gen. N.1124. 
Calyx five-cleft. Corol five-petalled. Five of the twenty - 
stamens, sterile. Germ pedicelled, five-celled ; cells few or 
many-seeded; atiachment interior. Capsule woody, five-cell- 
ed, Seeds winged. Embryo erect, plaited, and furnished 
with a perisperm, 
1. P. acerifolium. Willd, iii. 729, &c. ce 
Leaves peltate, ovate, repand. 
Pentapetes acerifolia. Linn, Cavan, &c. 
in_———_Z0~, 
