170 FLORA OF JAMAICA tiavenia 



March \ cult. Hope Gardens, Harris \ Cuba, Hispaniola, Guadeloupe. 



Shrub. Leaves digitately 3-foliolato, glabrous, glandular-dotted, dots 

 more or less pellucid ; leaflets narrowly elliptical to oblong, 3-5 cm. 1. ; 

 petiole 1-2 cm. 1. Peduncle 1-3-flowered, 2-6 cm. 1. Flowers markedly 

 proterandrous. Sepals 5, glandular-dotted, 2 outer ovate, obtuse, 1'1-1'3 

 cm. 1., 7-10 mm. br., 3 inner much shorter, roundish, adpressed to the 

 tube of the corolla. Corolla purplish-red or pinkish, glandular-dotted, 

 fleshy; tube 1'3 cm. 1. ; lobes somewhat unequal, the upper being the 

 shorter. Stamens glandular-dotted, 3 lower linear, sterile, the middle 

 one 3-lobed, the 2 lateral and each branch ending in a gland. Seeds 

 ellipsoidal, muriculate, about 3*5 mm. 1. 



'2. R. Swartziana Fawc. & Eendle in Journ. Bot. Iv. 38 

 (1917) ; leaves simple. Pomphidea Swartziana Miers Apocyn. 

 S. Amer. 19, t. i. D (1878); Urb. Synib. Ant. vi. 96. Type in 

 Herb. Mus. Brit. 



Jamaica (without locality), Swartz ! 



Leaves glabrous, glandular-dotted, elliptical, shortly acuminate, 4-8*5 

 cm. 1. ; petiole 2-3 mm. 1. Peduncle to 1 cm. L, about 2-flowered ; 

 pedicels 2-3 mm. 1. Sepals glandular-dotted, puberulous ; 2 outer ovate, 

 6-7 mm. 1., 2-3 mm. br., inner lanceolate, about half as long. Corolla 

 glandular-dotted, fleshy ; tube 7 mm. L, lobes somewhat unequal, about 

 5 mm. 1. Stamens glandular-dotted, 1 or 2 sterile. 



The examination of Swartz's specimen on which Miers founded the 

 genus Pomphidea, of which it is the only representative, shows con- 

 clusively that it is a species of Ravenia. 



2. ZANTHOXYLUM L. 



Shrubs or trees. Leaves alternate, pinnate with or with- 

 out an odd leaflet. Inflorescence cymose, usually paniculate. 

 Flowers polygamous or dioecious. Calyx 3-5-cleft. Petals 3-5, 

 imbricate or valvate. Male flower : Stamens 3-5, hypogynous. 

 Female flower : Stamens none or scale-like. Carpels 1-5, 

 1 -celled ; styles sublateral ; ovules 2 in each cell, collateral. 

 Carpels separating in the fruit, opening by the ventral suture, 

 each with one pendulous black seed. Endocarp loose or 

 adherent. Embryo straight or curved, in the axis of fleshy 

 endosperm, with round flat foliaceous cotyledons, and a very 

 short radicle. 



Species, about 140, natives of the tropics and warm regions 

 of the whole world. 



1. Petiole and rhachis of leaves not winged. Leaflets 



opposite or alternate ; pellucid dots many, all 



over the leaflet. Inflorescence a terminal panicle. 



Floral parts in 5's, sometimes in 4's in Z. flavum. 



Leaflets with many pellucid dots. 



Twigs, leaves, inflorescence glabrous 1. Z. elephantiasis. 



Twigs, petioles, inflorescence puberulous 



with simple hairs 2. Z.martinicense. 



Leaflets with very many pellucid dots. Twigs, 

 petioles, rhachis of inflorescence with minute 

 star-shaped hairs 3. Z. flavum. 



