758 RUTACEAE 
4—5 em. long, appressed-serrate: mature das dde mostly 2—5 n inu m 4-6 
PRI S 
mm. long. [Z. carolinianwm Lam. Ur de THACHE-TREE EA- 
ASH. PEPPER-WOOD. HERCULES’-CLUB.)— Woo pers hammocks, Coastal Plain, 
mostly near the coast or in eo soils, Fla. , Ark., and Va.—The 
light and soft heart-wood is pale-brown. The bak i is ud medieinally. 
coriaceum Rich. Shrub, or tree becoming 7 m. tall: leaves 6-15 
lu. ; blades of the dde leathery, rigid, obovate to cuneate or due with 
M. base, 2—6 ong: mature carpel 5—6 mm. lon m (HERCULES ’- 
C B.)— Coastal eA S. pen. Fla. and the Keys. (V 
Z. ericanum Mill Shrub 1-3 m. tall, with prickly branches: leaves 1-3 
dm. Dus leaflets 4—8 cm. long, the blade ovate, d or rarely oval: corolla 
9—9.0 m me ho m mature earpel 4—5 m n dia — (NORTHERN PRICKLY- 
AS HE-TREE. ) —River- i uud rocky poen various provinces, 
rarely Coastal Plain, Ga. to Nebr., Mi inn., and Ont 
. PTELEA L. Shrubs or trees. Leaf-blades 3-foliolate or rarely 5- 
foliolate. Flowers polygamous or sometimes dioecious, in cymes. Sepals 4 or 5. 
tals r 5, narrow, white or greenish. Ovary 2-3-celled. Ovules 2 in each 
cavity, superposed. Samara winged all around.—About 6 species, Nort 
erican.—SHRUBBY-TREFOILS.—The'’ bark is bitter and is used as a toni 
Leaflets mostly 6-12 cm. long; blades broad, 2-8 em. wide; samara-body orbicular 
oval. 
Samara AME E to oval-orbicular. 1. P. trifoliata. 
Samara obovat 
sau lg with Pat d serrate blades: samara 16-19 mm 
ute or utish at the base, the body merely 
glandular dott ed. 2. P. serrata. 
M with entire blades: sama 8—11 long, 
Unde à or truncate at the base, the body pitted. 3. P. microcarpa. 
Leaflets moss 1-3 em. long; blades narrow, about 1 em. wide: 
samara-body elliptie ! . P. Baldwinii. 
L. P. trifoliata L. Shru ub, or tree sometimes 8 m. tall: blades of the leaflets, 
ovate, oval elliptie, elliptic-lanceolate, or oblanceolate, 4-12 em. long, glabrous 
(or densely pubeseent in P. trifoliata Mp - 
voo a 
Pues Mr) s to Ariz., Minn., and 
—(Mez.)— 
P. serrata Small. Shrub 1-2 m. tall, 
with er blaekish E blades of 
= leaflets _thinnish, 2.5—7 em. long, serrate, 
ui acuminate, much price Maium s 
of 
shee those te | 
elliptie- cova that of the terius one eliptic or elliptic-obovate: samara pale- 
green, with ‘the e body copiously black-dotted, the wings thin, sparingly dotted.— 
Granite rocks, in the Piedmont of Ga. —Spr. 
3. P. microcarpa Small. Shee 1. E m. boe with dark-brown branches: blades 
of the leaflets thickish, 5-10 em. long, entire, obtuse or dcutish, slightly paler 
beneath than above, those of faa lat n ones ovate or ovate-la neeolate, ee 0 
the terminal one elliptie or elliptic-obovate: samara brownish, with the body 
