Zanthoxylum 



RUTACE^ 



173 



variable in number, in 4-7(-15) paira (young shoots with- more laafleis, 

 than those more mature), opposite or alternate, sessile or subsessile, oblong- 

 elliptical or oblong-lanceolate or oblanceolate, apex rounded, sometimes 

 obtuse to shortly acuminate, base unequal-aided, 5-10 (3-l'3) cm. 1. 

 Panicles terminal, rarely lateral. Flowers subsessile. Sepals 5, opea in 

 bud, triangular, membranous, about '5 mm. 1. Petals 5, 1-5-2 mm^ 1., 

 elliptical. Male flowers : filaments 5, about half as long again as the 

 petals. Fruit : cocci glandular-dotted, obliquely ovate to orbicular, about 

 5 mm. 1. Seeds about 4 mm. 1. 



The wood is of a light yellow colour and even grain, saws readiily 

 straight, is useful for furniture and Inside work, but does not last when 

 exposed. Weight 60 lbs. per cubic foot. 



3. Z. flavum Vahl Edog. Hi. 48 (1807) ; dioecious; puberulous 

 on twigs, petioles, and rhachis of inflorescence with minute star- 



Fig. 50. — Zanthoxylum flavum Valil 



A, Inflorescence with a young leaf x §. 



B, Male flower cut lengthwise X 3. 



C, Female tlower X 3. 



D, Pistil cut across X i. 



E, Fruit of 2 cocci, one open showing the 



seed, X 2. 



F, Coccus cut lengthwise, showing seed 

 with endosperm and embryo. 



G, Cross-section of small portion of wood 

 about i inch long, showing, with the 

 aid of a lens, the vessels as minute 

 dots, numerous and evenly dispersed 

 in the rings. 



shaped hairs ; leaflets entire, sometimes slightly crenate, with 

 very numerous pellucid dots ; floral parts in 4's or 5's ; carpels 2 

 (3-1) ; cocci 1, sometimes 2. — P. Wils. torn. cit. 196. Z. cribrosum 

 Spreng. Syst. i. 946 (1825) ; Sarg. Silv. i. 71, t. 30, 31. Z. Sumach 

 Griseh. PL Carib. 42 (1857) & Fl. Br. W. Ind. 138 (non Mac/.). 

 Fagara flava Kr. & Urb. in Engl. Jahrb. xxl 571 (1896) (with 



