XVIl. XANTHOXYLA‘CE: PTE‘LEA, 143 
Identification. Willd. Sp., 4. p.757.; Dec. Prod., 1. p. 726. ; Don’s Mill., 1. p. 802. 
Synonymes. Zanthdxylum ramiflbrum Mich. Fi. B. A. 2. p. 235.3 Z. Clava Hérculis var. Lin. Sp. 
1455., Lam. Dict. 2. p. 38.3; Z. americanum Mill. Dict. No. 2., and Tor. & Gray, 1. p. 214.3 
Z. miteWilld. Enum ; Z. caribe‘um Gert. Fruct., but not of Lam.; Z. tricarpum Hook. not of 
Michx.; Clavalier 4 Feuilles de Fréne, Fr.; Eschen-blattriges Zahnwehh Ger.; Prickly 
Ash, Amer.; Frassino spinoso, Ital. 
eect Du Ham. Arb., 1. t. 97.; the plate of this species in Arb. Brit., lst edit., vol. v. ; and 
our, . . 
Spec. Char., §c. Leaves pinnate, of 4 to 5 pairs of leaflets, and an odd one; the 
leaflets ovate, obscurely sawed, equal at the base ; the petiole round, and de- 
void of prickles ; prickles in the situation of stipules. Flowers in axillary 
umbels, without petals. (Dec. Prod., i. p. 726,727.) A low deciduous 
tree or shrub. Canada to Virginia. Height 10 ft. to 15 ft. Introd. 1740. 
Flowers yellowish, with red anthers; April and May. Seeds large, black ; ripe 
in September. Decaying leaves yellowish green. Naked young wood ash- 
coloured and greenish. 
Variety. 
¥ & X. f. 2 wrginicum, the X. virginicum of Lodd. Cat., of which there is 
a plantin the garden of the London Horticultural Society, and several 
in the arboretum of Messrs. Loddiges, appears to us only a variety 
of X. fraxineum; probably the same as X. (f.) tricarpum. 
& & 2. X.(F.) trica’Rpum Miche. The three-fruited Xanthoxylum, or Tooth- 
ache Tree. 
Identification. Michx. Fl. Bor. Amer., 2. p. 335. ; Dec. Prod., 1. p. 726.; Don’s Mill., 1. p. 803. 
Synony Z. carolinjdnum Law, Tor, & Gray, l. p. 214; Fagara fraxinifolia Lam. Lil. 1. 
Pike Lam. IIL, 1. t. 334, ; and ourfig. 192. 
Spec. Char., §c. Leaves pinnate; the leaflets 3 
to 5 pairs, and an odd one, all on short stalks, 
oblong oval, acuminate, finely sawed, oblique at 
the base. Petioles and branches prickly. Pa- 
nicles terminal. Petals 5. (Dec. Prod.) A low 
tree or shrub. North Carolina to Florida. 
Height 10 ft. to 15 ft. Introd. 1806. Flowers 
greenish ; June. Seeds large, black ; ripe Oct. 
Leaves and bark very aromatic and pungent. 
Prickles very sharp. The bark of this and the 
preceding species is imported from New York, 
and sold in Covent Garden Market as a cure for 
the rheumatism. Probably a variety of the pre- 
ceding species. 
192. Xanthdéxylum tricarpum. 
Other Species of Xanthézylum.—X. mite Willd., treated as a species by 
some authors, is made a synonyme of X. fraxineum by Torrey and Gray, and 
it probably bears the same relation to that species that Gleditschia inérmis 
does to G. triacanthos. Our opinion is, that there is only one species of the 
genus in British gardens. 
Genus II. 
An 
PTELEA L. Tue Preiea, or SHrupBy TREFOIL, Lin. Syst. Mone'cia 
Tetra-Pentandria. 
Identification. Lin, Gen., No. 152. ; Dec. Prod., 2. p. 82.; Don’s Mill., 1. p. 806. 
Synonymes. Bellucia Adans.; Orme de Samarie, Fr. ; Lederblume, Ger. 
Derivation. From ptelea, the Greek name of the elm, adopted by Linnzus. 
Gen. Char. Calyx short, 4—5 parted. Petals 4—5, longer than the caiyx. 
—Male flowers. Stamens 4—5, longer than the petals.—Female flowers. 
