46 DICOTYLEDONOUS. 



ing, much larger than the sepals. Stamens 4, alternate with 



and longer than the petals. Filaments hairy on the inside. 



Fruit a samara, 2-celled, with one seed in each cell, wing re« 



ticulated. 



1. P. Trifoliata. a shrub, branchins: ; the young branches pubescent. 

 Leaves ternate. Leaflets sessile, ovate, the terminal •ne attenuate at the 

 base, obscurely crenulate. Flowers in terminal panicles. Petals ov»l, pu- 

 bescent, greenish. Flowers with a disagreeable odour. 



Greenish. May — June. Middle Car. & Geo. 6-8 feet. 



Order XXIX. ANACARDIACE.E. 



Dioecious or perfect, regular. Sepals generally 5, distinct, 

 or united at the base. Petals of the same number as the se- 

 pals, or none, when present inserted into a glandular disk at 

 the bottom of the calyx, aestivation imbricate. Stamens the 

 same number as the sepals, and opposite them, or twice as 

 many, anthers introrse. Ovary solitary, of 1-5 carpels, all 

 but one abortive, 1-celIed. Styles usually 3, distinct or uni- 

 ted. Stigmas 3. Fruit usually drupaceous, l-seeded. Seed 

 erect or suspended, anatropous. Embryo curved. Albumen 

 none. Vines and shrubs, or small trees with a caustic juice. 

 Cotyledons foliaceous. 



Genus I. RHUS. 



1. R. Typhixa. a shrub or small tree, branches very villous. Leaves 

 unequally pinnate, 11-31 leaflets, lanceolate-oblong, acuminate, acutely 

 serrate, pubescent beneath. Petioles sometimes 2-3 feet long, villous. Flow- 

 ers often poly gamons or dicecious, in dense panicles. Fruit a compressed 

 drupe, covered with an acid crimson, velvet-hke down. Cellular ussne of the 

 wood orange color, with a strong aromatic odour. Juice resinous copious. 



Stag horn Sumack. 

 Greenish yellow. Yi- June. 15-20 feet. Middle Georgia, in dense 

 bunches on rich land, 



2. R. Glabra. A large shrub, with milky juice, glabrous, generally tin- 

 ged with purple. Leaves pinnate, with 13-31 leaflets, lanceolate-oblong, 

 acuminate, smooth, acutely serrate, glaucous beneath. Flowers in terminal, 

 thyrsoid panicles, often dioecious. Fruit clothed with crimson, acid hairs. 



Smooth Sumack.. 

 Greenish yellow. T^, July. Around fields, common. 6-12 feet. 



3. R. PriMiLA. A procumbent shrub, villous. Leaves pinnate, about 11 

 leaflets, oval or oblong, toothed, pubescent. Flowers in terminal panicles, 

 nearly sessile. Fruit clothed with a red, silky pubescence. Said to be very 

 poisonous 



T^. July. Upper country. 10-14 inches. 



4. R. CopALLiNA. A branching shrub ; branches pubescent. Zeaves pin- 

 nate. Leaflets 9-21, obliquely lanceolate, slightly revolute, glabrous on the 

 upper surface, jjubescent on the lower, unequal at the base. Petiole winged 

 and jointed. Flowers in terminal panicles, somewhat leafy. Fruit red, 

 hairy, sour. Sumack. 



Dull yellow. T7. August. Common. 3-12 feet. 



5. R. Vernis. a shrub, with glabrous branches, poisonous. Leaflets 7- 

 13 membranaceous, oval, acuminate, entire, glabrous. Flowers in slender 



