214 ZANTHOXYLACE^. Ptelea. 



men : cotyledons oval, flat. — Trees or shrubs, aromatic and bitter. 

 Leaves alternate or opposite, exstipulate, simple or usually pinnate : 

 leaflets mostly marked with pellucid dots. 



1. ZANTHOXYLUM. Linn. ; H. B. ^ K. not. gen. ^ sp. 6. p. 1. 



Dioecious. Sepals 3-9, small. Petals longer than the sepals, or none. 

 Stamens as many as the sepals and opposite them (or fewer), mostly exsert- 

 ed ; those of the pistillate flowers rudimentary. Ovaries 1-5, raised on a 

 globose or cylindrical torus, distinct, with 2 collateral suspended ovules: 

 styles distinct, or united at the apex, sometimes very short. Carpels crusta- 

 ceous in fruit, sessile on the torus or stipitate, 2-valved, 1-2-seeded. Seeds 

 black and shining, globose when solitary, hemispherical when in pairs. — 

 Trees or shrubs, usually with prickles on the branches, petioles, and midrib 

 of the leaflets. Leaves pinnately 3-13-foliolate. Flowers small, greenish or 

 whitish : inflorescence various. 



§ 1. Sepals 5 or more, peia^oid, with a minute glandular beard at the 

 apex: petals none: ovaries as many as sepals and opposite them: 

 styles terminating in clavate stigmas, which are at first connate. — 

 Zanthoxylum, Golden. 



./' 1. Z. Americanim (Mill, diet.) : branches and often petioles armed with 

 short strong (stipular) prickles; leaves pinnate; leaflets ovate-oblong, nearly 

 sessile, obscurely serrulate or entire, more or less pubescent; flowers in short 

 axillary umbels ;' carpels stipitate.— U'illd. beschr. ( 1781) p. 1 16. Z. fraxin- 

 ifolium, Marsh, arbusl. (1785.) Z. fraxineum, Willd. Berl. baum. (1796), 

 &■ sp. 4. p. Ibl ; Pursh, fl. 1. p. 210 ; DC. prndr. 1. p. 726 ; Hook. ]i. Bor.- 

 Am. 1. p. US: Bigel. mud. bot t. 59. Z. ramiflorum, Michj-. ! fi. 2. p. 235. 

 Z. tricarpum, Hook. I. c. not of Michx. Z. Clava-HercuUs, var. Linn. 

 Z. mite, Willd. mum. p. 1013; DC. I. c. 



Canada! to Virginia; west to the Mississippi. April-May.— A shrub or 

 very small tree ; the bark pungent to the taste. Flowers greenish. Leaves 

 often nearly glabrous when mature, sometimes tomentose beneath. Seeds 

 large, black. — Prickly Ash. 



§ 2. Sepals, petals, and stamens 5 : ovaries usually 3 : styles short.— 

 OcHROXYLUM, ScJireb. (Kampmannia, Raf. ex Ad. Juss.) 



2. Z. Carol iniamun (Lam.) : branches and usually petioles armed with long 

 stipular prickles ; leaves pinnate ; leaflets ovate-lanceolate, inequilateral, some- 

 what falcate, petiolulate, crenate-serrulate, glabrous, lucid above : flowers m 

 terminal panicles; sepals minute; carpels sessile.— Lam. diet. (1786)2. p. 

 40; Catesb. Car. 1. L 26. Z. tricarpum, Michx.! I. c ; Pursh, I.e.; Ell. 

 sk. 2. p. 690 ; DC. I. c. Z. fraxinifolium, Walt. Car. p. 243. Fagarafraxi- 

 nifolia. Lam. ill. t. 334. 



In sandy soil near the sea-coast, N. Carolina! Georgia! and Florida; 

 west to Arkansas! June.— A small tree (the Prickly Ash of the Southern 

 States) ; the leaves and bark very aromatic and pungent. Pricldes very sharp. 



2. PTELEA. Linn. ; Lam. ill. t. 84; Gcertn.fr. t. 49. 

 Polygamous. Sepals 3-6, commonly 4, small. Petals much longer than 



