188 NORTH AMERICAN FLORA [Volume 25 



obovate, 0.3-1.5 cm. long, 1-5.5 mm. broad, rounded or truncate and sometimes emarginate 

 at the apex, cuneate to slightly rounded at the base, entire, lustrous above, scarcely paler 

 beneath, opaque, sessile or very short-petioluled ; lateral nerves small or scarcely prominent ; 

 glands very few and scattered; petioles and internodes of the rachis winged, oblong to oblong- 

 elliptic, 0.5-3 mm. broad, usually unarmed or rarely bearing a small brownish prickle be- 

 tween the pairs of leaflets ; flowers solitary, or several glomerate in the axils of the leaves ; 

 staminate flowers : sepals 4, triangular, obtuse, 0.5 mm. long ; petals 4, oval to elliptic, 

 1.5-2 mm. long, 0.7-0.9 mm. broad, rounded at the apex, substipitate at the base ; stamens 

 4; filaments longer than the petals; anthers ovate to nearly orbicular ; gynophore conic, 

 4-grooved, ver3' small ; ovaries 2, rudimentary, very short, oblong or linear-lanceolate ; pis- 

 tillate flowers : gynophore entire, semiglobose, short ; gynoecium 2-carpellary ; styles long- 

 persistent ; stigmas connate ; follicles 1 or 2, sessile or short-stipitate, united below, glo- 

 bose or globose-obovoid, 2.5-3.4 mm. in diameter, obtusely keeled on the inner side, mucro- 

 nate, brownish or blackish, dehiscing to above the middle ; seeds ovoid, rounded or subglo- 

 bose, 2.5-3 mm. long, black, shining. 



Type locality : Caracas, Venezuela. 



Distribution : Cuba; Porto Rico to Barbados; also in Venezuela. 



Illustrations : Jacq. Fragm. pi. 6, f. 2 ; Pluk. Aim. pi. 107, f. 4. 



19. Zanthoxylum tragodes (L.) DC. Prodr. 1; 725. 1824. 



Schinus iragodes L. Sp. PI. 3S9. 1753. 



Fagara Iragodes Jacq. Enum. PI. Carib. 12. 1760. 



A more or less erect or vine-like shrub, 2-3 m. high, with a grayish bark, the branches 

 often slender, flexuous, armed with slender, recurved, brownish, stipular prickles 3-7 

 mm. long; twigs minutely puberulent when young, glabrate with age; leaves odd-pinnate ; 

 leaflets 3-13, opposite, linear to oblanceolate, occasionally obovate, 0.5-1.8 cm. long, 0.2-0.5 

 cm. broad, rounded or occasionally emarginate at the apex, narrowed to the base, entire, 

 lustrous, sessile or subsessile, not pellucid-glandular, reticulate-veined, the lateral nerves 

 prominent ; petioles and internodes of the rachis winged, linear-oblanceolate to rectangular- 

 oblong, 2-8 mm. broad, strongly reticulate-veined ; flowers solitary, or several glomerate in 

 the axils of the leaves ; staminate flowers : sepals 4, triangular-orbicular or suborbicular, 

 0.7-0.8 mm. long, and as broad, rounded at the apex ; petals 4, oval or obovate, 2 mm. long, 

 1.5 mm. broad, rounded at the apex ; filaments as long as the petals ; anthers ovate, obtuse ; 

 gynophore conic ; ovaries 2, rudimentary, linear-lanceolate ; pistillate flowers not seen ; fol- 

 licles globose-ovoid, 5 mm. long, 4-4.5 mm. broad, short-mucronate, dehiscent to below the 

 middle ; seeds globose-ovoid, 4 mm. long, 3.5 mm. broad, black, shining. 



Type locality : America. 



Distribution: Haiti. 



Illustrations: Jacq. Sel. Stirp. Am. pi. 14 ; Am. Gew. 1 : pi. IS ; Havne, Term. Bot. 1 : pi. 

 14, /. 2. 



20. Zanthoxylum Liebmannianum (Engler) P. Wilson, Bull. Torrey 



Club 37: 85. 1910. 



Fagara Liebmanniana Engler, Bot. Jahrb. 21 : Beibl. 54 : 20. 1896. 

 Zanthoxylum longipes Rose, Contr. U. S. Nat. Herb. 5 : 163. 1899. 



Unarmed or sparsely prickly, the twigs angled, flexuous, greenish, puberulent when 

 young, glabrate when old, unarmed or bearing few, short, recurved, light- or dark-brown 

 prickles; leaves trifoliolate, 1.2-3.3 cm. long; leaflets elliptic to nearly orbicular or obovate, 

 0.7-3 cm. long, 0.4-1.4 cm. broad, acute or rounded and sometimes retuse at the apex, 

 cuneate or somewhat rounded at the base and bearing a glandular callosity on each side, 

 more or less inequilateral, crenulate, lustrous above, all sessile, or the terminal one some- 

 times petioluled, the pellucid glands scattered ; petioles grooved ; inflorescence terminal or 

 axillary, compact, when young more or less puberulent, the clusters 1-3 cm. long; flowers 

 not seen, but the calyx from under mature carpel 1-1.5 mm. broad, the sepals 4, ovate to 

 triangular ; follicles 1 or 2, globose or globose-obovoid, usually long-stipitate, the stipe 

 1.5-4 mm. long ; seeds globose or subglobose, 2.5-3 mm. broad, black, shining. 



Type locality: On limestone, near San Juan del Estado, Oaxaca. 

 Distribution : Southern Mexico. 



