( "5 ) 
The Filaments are four, awl-fhaped. Th s Antherce are roundifh. 
The Germen is orbiculate and comprefled. The Style is ihort. 
The Higmas are two, a little obtufe. 
The Seed-vejjel is a roundilh, perpendicular membrane, in the 
center two cell’d. 
The Seed is one, obtufe, and leflened at the bafe. 
Obf. The Petals and ftamina, alfo the divifions of the calyx, 
have often one added to their number. 
We have, with us, but one Species, viz. 
Ptelea trifoliata. Carolinian Shrub-Trefoil. 
This rifes with an upright woody ftem, to the 
height of ten or twelve feet, dividing into many 
branches, covered with a fmooth greyilh bark. The 
leaves are trifoliate, or compofed of three oval, 
fpear-fhaped lobes, of a bright green on their upper 
fide, but paler underneath, and inferred together at 
the end of a pretty long footftalk. The flowers ter- 
minate the branches in a kind of umbel, or large 
branching heads, of a whitifli herbaceous colour; 
and are fucceeded by roundifh, flat, bordered cap- 
fules, fomewhat refembling thofe of the Elm, each 
containing two feeds. 
P Y R O L A. 
WINTER-GREEN. 
Clafs io. Order i. Decandria Monogynia. 
T HE Empalementjs five-parted, fmall, and permanent. 
The Corolla is compofed of five petals, which are round- 
iiTi, concave, and fpreading. 
The Filaments are ten, awl-fliaped, fhorter than the corolla. 
The Antherce are nodding, large, and two-horned upward. 
The Piftillum has a roundilh, angular Germen ; a filiform, per- 
manent Style , longer than the ftamina,- and a thickiih Stigma. 
The 
