GG KUTAClwE. (BUB FAMILY.) 



Obdeb 34. RUTACEJE. (Rue Family.) 



Herbs, shrubs, or trees, -with exstipulate simple or compound dotted 

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

 petals 3-5. Stamens as many or twice as many 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. Pkicklt Ash. 



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

 Ovaries 2 - 5, sessile or stipitate, 2-ovuled. Carpels 2-valvcd, 1 - 2-seeded. Seed 

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

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

 small, greenish. 



1. Z. Carolmianum, Lam. (Tootiiaciie-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. FRUTICOSUM, 

 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 emarginate on the sterile, slightly crcnulate, and like the cymose panicle stel- 

 late-pubescent ; 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. Ptei'Ota, 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 V - ■]' long, those on the fertile plant narrower and smaller. Carpels small, 

 dotted. 



2. PTELEA, L. Hoptbeb. 



Flower- polygamous. Sepals and petals 4-5, imbricated in the bud, decidu- 

 ous. Stamens i -5. Ovary 2-oelled, with two ovules in each cell. Style short. 

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

 reticulated win-. — - Unarmed shrubs, with trifoliolate leaves, and small greenish 

 Rowers in a terminal cyme. 



l. P. trifoliata, L. Pubescent; leaves long»petioled ; leaflets oval or 

 oblong, mostly acute, ol»curcly crcnulate. paler beneath, the lateral ones unequal- 



