Part 3, 1911] RUTACEAE 193 



occasionally 5, obovate, truncate or rounded and often emarginate at the apex, cuneate 

 at the base, minutely and often obscurely crenulate above the middle, equilateral or occasion- 

 ally inequilateral, sessile or subsessile, glabrous, coriaceous, lustrous above, pellucid-glan- 

 dular, the glands few, scattered, the marginal ones larger; lateral leaflets 2.5-7 mm. long, 

 1-4 mm. broad, the terminal one somewhat longer and broader; flowers solitary, axillary, 

 closely sessile; calyx from under mature carpels 1.5-2 mm. broad, the sepals 5, entire or 

 denticulate ; follicles 1-3, sessile, obovoid, compressed, 6-9 mm. long, 5-9 mm. broad, 

 blackish or brownish, the surface wrinkled ; seeds orbicular, compressed, often truncate at 

 the base, 5-6 mm. long, black, shining, smooth or slightly wrinkled. 



Type locality : In a xerophvtic region near Gonaives, Haiti. 

 Distribution : Northwestern Haiti. 



32. Zanthoxylum Nelsoni Rose, N. Am. Fauna 14 : 79. 1899. 

 A glabrous, unarmed (?) tree, 7.5-20 m. high, with grayish-brown, verrucose-glandular 

 twigs; leaves odd-pinnate, 14-27 cm. long; leaflets 11-15, oblong-lanceolate to elliptic- 

 lanceolate, the lower ones sometimes broadly elliptic, 4.5-10 cm. long, 1.5-3.1 cm. broad, 

 acuminate to long-acuminate at the apex, narrowed or rounded at the base, somewhat 

 inequilateral or nearly equilateral, crenulate, glabrous, the pellucid glands elevated, 

 numerous, those bordering the margin forming a conspicuous even row, composed alter- 

 nately of large glands at the sinuses and smaller ones intervening ; petioles and rachis 

 terete or nearly so, above narrowly grooved ; inflorescence terminal, rather compact, the 

 branches stout ; flowers not seen ; sepals from under mature carpels 5, semiorbicular or semi- 

 orbicular-triangular ; gynecium 5-carpellary ; follicles sessile, wrinkled, 0.9-1.1 cm. long, 

 blackish, not conspicuously verrucose-glandular, broadly obovoid, somewhat flattened ; 

 seeds 6.5-7 mm. long, black, shining. 



Type locality : Maria Madre Island, Tres Marias, Mexico. 

 Distribution : Known only from the type locality. 



33. Zanthoxylum Elephantiasis Macfad. Fl. Jam. 1 : 193. 1837. 



Zantho*. ylum aromalicum DC. Prodr. 1: 727. 1824. Not Z. aromaticum Willd. 1806. 

 Fagara Elephantiasis Krug & Urban ; Urban, Bot. Jahrb. 21 : 564. 1896. 



A tree 5-18 m. high, with a grayish bark, bearing near the base hard-corky cushions, 

 which are sometimes concrescent, forming short ridges, or helmet-shaped ; branches usually 

 unarmed, glabrous; leaves odd-pinnate, 10-25 cm. long, occasionally longer; leaflets 5-17, 

 commonly 11-15, narrowly elliptic, lanceolate, oblong-lanceolate, ovate, or rarely oblong- 

 obovate, 3.5-10.5 cm. long, 1.5-3.5 cm. broad, acute to long-acuminate at the apex, obliquely 

 rounded or acute at the base, irregularly crenulate, glabrous ; pellucid glands elevated, 

 rather numerous, often becoming brown and opaque, a conspicuous one at the base of each 

 sinus and one or more smaller ones intervening ; petioles and rachis terete or nearly so, 

 above narrowly grooved, unarmed, glabrous; inflorescence terminal, compactor open; 

 staminate flowers : sepals 5, suborbicular, 1-1.3 mm. long, 1.5-2 mm. broad, the margins 

 entire or somewhat crenulate ; petals 5, elliptic or elliptic-oblong, 5-6 mm. long, 2-2.5 mm. 

 broad, greenish-yellow; stamens 5, equaling or a little shorter than the petals; anthers 

 oblong; pistillate flowers: gynoecium 5-carpellary; follicles 1-1.5 cm. long, conspicuously 

 verrucose-glandular, the bod)' broadly obovoid, 7-9 mm. long, 6-8 mm. broad, somewhat 

 flattened, the stipe equaling the body, or longer or shorter, the valves often spreading at 

 maturity ; seeds obliquely lenticular, 6-8 mm. long, usually pointed at one end, black, shining. 



Type locality : Near Mount Lebanon, Jamaica. 



Distribution: Cuba, Hispaniola, Jamaica, Mexico, and Costa Rica. 



34. Zanthoxylum caribaeum Lam. Encyc. 2 : 39. 1786. 



Fagara caribaea Krug & Urban ; Urban, Bot. Jahrb. 21 : 562. 1896. 

 Zanthoxylum occidentals Rose, Contr. U. S. Nat. Herb. 5 : 164. 1899. 



A shrub, or tree 7-20 m. high, with glabrous branches armed with short, straight, dark- 

 brown prickles ; leaves equally pinnate or odd-pinnate ; leaflets 7-13, on the young shoots 

 sometimes as many as 23, ovate to elliptic-oblong or oval, 4.5-12 cm. long, 2.5-5cm. broad, 



