GG RUTACE^E. (HUE FAMILY.) 



Order 34. RUTACEJ1. (Rue Familt.) 



Herbs, shrub.-;, or trees, with oxstipulate simple or compound dotted 

 Leaves, and regular hypogynous perfect or unisexual (lowers. — Sepals and 

 petals 3-5. Stamens as many or twice as mauy as the sepals. Ovaries 

 2-5, distinct or united, stipitate or sessile on a glandular disk. Styles 

 mostly united. Fruit commonly composed of separate 1 -celled 2-valved 

 carpels. Embryo straight or curved, mostly in fleshy albumen. 



1. ZANTHOXYLUM, L. Prickly Ash. 



Flowers monoecious or dioecious. Sepals and petals 3-5. Stamens 3-5. 

 ( ►varies 2 - 5, sessile or stipitate, 2-ovuled. Carpels 2-valved, 1 - 2-seeded. Seed 

 smooth and shining. — Trees or shrubs, commonly armed with stipnlar prickles. 

 Leaves unequally pinnate, the leaflets puuetate with pellucid dots. Flowers 

 ■=niall, greenish. 



1. Z. Carolinianum, Lam. (Toothache-Tree.) Smooth; branches 

 and commonly the petioles armed with long prickles ; leaves alternate, 7-9- 

 foliolate; leaflets ovate-lanceolate, crenate-serrulate, unequal-sided, shining above ; 

 panicles terminal; stamens 5; carpels 3, nearly sessile. — Var. frith iOSUM, 

 Gray. Shrubby ; leaves shorter, ovate or oblong, more strongly crenate ; ova- 

 ries always two. — Dry soil near the coast, Florida to North Carolina, and west- 

 ward. June. — A small tree, with the pungent bark armed with warty prickles. 



2. Z. Floridanum, Nutt. (Satin-Wood.) Branches and petioles un- 

 armed; leaflets 5-7, ovate-lanceolate on the fertile plant, and elliptical, obtuse 

 or emarginatc on the sterile, slightly crenulate, and like the cymose panicle Btel- 

 late-pubescent j stamens 4-5; carpels 1-2, obovate, stipitate; seed solitary, 

 obovate, black and shining. — South Florida. — Leaves l'-2' long. Cyme 

 sessile, divided into three primary branches. Flowers minute. 



3. Z. Pterota, II. B. & K. Smooth ; branches zigzag, armed with short 

 curved prickles; petiole winged, jointed ; leaflets 7-9, small, obovate, coria- 

 ceous, crenate above the middle, sessile; flowers in axillary clusters, which are 

 single or by pairs, as long as the first joint of the petiole ; stamens 4 ; ovaries 

 2; carpels solitary, globose, pitted, distinctly stipitate. — South Florida. — Leaf- 

 lets 1' - I' long, those on the fertile plant narrower and smaller. Carpels small, 

 dotted. 



2. PTELEA, L. Hop-tree. 



Flowers polygamous. Sepals and jM'tals 4-5, imbricated in the bnd, decidu- 

 ous. Stamen- t -5. Ovary 2-Celled, with two ovules in each cell. Style short. 



Stigma 2-lobed. Capsule 2-celled, 2-seeded, surrounded by a broad circular 

 reticulated wing. — Unarmed shrubs, with trifbliolate leaves, ami small greenish 



flowers in a terminal cyme. 



l. P. trifoliata, L. Pubescent; leaves kmg-petioled ; leaflets oval or 

 oblong, moetlj acute, obscurely crenulate, paler beneath, the lateral ones unequal' 



