64 CYEILLACEAE. 



2. T. Toxicodendron (L.) Brittpn. Shrub, with densely pubescent twigs: 

 blades of the leaflets ovate in outline or rarely obovate, 4-12 cm. long, coarsely 

 crenate-lobed : panicles densely flowered: petals oblong-lanceolate, about 2.5 

 mm. long: drupes depressed-globose. POISON-OAK. 



Pinelands, n. Fla. and the upper pen. (Cont.) Spr. 



3. T. Vernlx (L.) Kuntze. Shrub or small tree: blades of the lateral leaflets 

 oblong, elliptic, or oval, 4-15 cm. long, undulate: petals linear-oblong, about 

 2 mm. long: drupes subglobose, about 5 mm. broad, in drooping panicles. 

 POISON-SUMAC. THUNDERWOOD. 



Swamps, n. Fla. (Cont.) Spr. 



3. RHUS L. Shrubs or trees. Leaf -blades pinnately compound, several- 

 foliolate. Flowers polygamous or dioecious, borne in terminal usually compact 

 panicles. Sepals commonly 5. Petals commonly 5. Ovary pubescent. Style 

 short. Drupe pubescent. Seed smooth and even. Spr. 



Bark of the trunk gray, dull : petals about 2.5 mm. long : anthers broadly oblong, 



scarcely 1 mm. long. 

 Blades of the leaflets acuminate, and usually acute : leaf-rachis 



broadly winged. 1. R. copallina. 



Blades of the leaflets obtuse : leaf-rachis narrowly winged. 2. R. ootusifolia. 



Bark of the trunk red, shining : petals about 3 mm. long : anthers 



linear-oblong, fully 1 mm. long. 3. R. leucantha. 



1. B. copallina L. Shrub, or tree becoming 10 m. tall, the bark thick, hard, 

 scaly: leaflets 9-21; blades oblong to oblong-lanceolate or sometimes oval, 3-10 

 cm. long: stone of the drupe 2.5-3 mm. long. DWARF-SUMAC. 



Open woods and thickets, n. Fla. and the upper pen. (Cont.) 



2. B. obtusifolia Small. Shrub: leaflets 17-21; blades ovate to oblong, 2-5 

 cm. long: petals about 2.5 mm. long: stone of the drupe 3.5-4 mm. long. 



Pinelands, n. Fla. and the pen. (Cont.) 



3. B. leucantha Jacq. Shrub, or tree becoming 9 m. tall, the bark thin, soft, 

 smooth, peeling: leaflets 15-33; blades narrowly oblong to linear-lanceolate, 

 3-9 cm. long: stone of the drupe about 3 mm. long. SOUTHERN-SUMAC. 



Hammocks, E. Keys. ( H". /.) 



4. SCHMALTZIA Desv. Shrubs or trees. Leaf-blades pinnately com- 

 pound, usually 3-foliolate. Flowers polygamous or dioecious, in ament-like 

 racemes or panicles. Sepals commonly 5. Petals commonly 5. Ovary pubes- 

 cent: styles short. Drupe pubescent, the sarcocarp not wax-secreting. Seed 

 smooth and even. SUMAC. 



1. S. crenata (Mill.) Greene. Shrub with diffuse stems, 1-2.5 m. tall: leaf- 

 lets 3; blade of the terminal one mostly ovate or obovate: flowers yellow: 

 drupes 7-8 mm. in diameter. [S. aromatica (Ait.) Desv.] FRAGRANT-SUMAC. 

 Dry open woods, n. Fla. (Cont.) Spr. 



FAMILY 3. CYRILLACEAE. TITI FAMILY. 



Shrubs or trees. Leaves alternate: blades simple, entire. Flowers 

 perfect, racemose. Calyx of mostly 5 sepals. Corolla of mostly 5 petals. 

 Androecium of 5-10 stamens. Gynoecium of 2-5 united carpels. Fruit 

 dehiscent or indehiscent. 



Racemes lateral : sepals 5, equal : petals contorted, acute : stamens 5 : ovary 2-celled : 



ovules 2-3 : fruit dehiscent, not winged. 1. CTRILLA. 



Racemes terminal : sepals 5-8, unequal : petals imbricated, obtuse : 



stamens 10 : ovary 3-4-celled : ovule 1 : fruit indehiscent, winged. 2. CLIFTONIA. 



