112 AQUIFOLIACEAE. 



Leaf-blades simple: ovary on a swollen receptacle. 1. Maxgifera. 

 Leaf-blades compound: ovary not on a swollen receptacle. 



Drupe somewhat elongate, the coats permanently united. 2. Metopiusi. 

 Drupe depressed, the coats ultimately separating. 



Drupe with a glabrous outer coat : stone ribbed. .''>. Toxicodendron. 



Drupe with a pubescent outer coat: stone smooth. 4. Riirs. 



1. MANGIFERA L. Trees. Leaf-blades simple, relatively narrow. 

 Flowers polygamo-dioeeious, in stiff panicles, the branches not plumose. 

 Sepals i or 5. Petals 4 or 5. Ovary oblique: style 1, lateral. Drupe ovoid to 

 somewhat reniform, smooth: stone tenaciously fibrous-coated. 



1. M. indica L. Leaf -blades leathery, oblong to linear-oblong or linear-lanceo- 

 late, mostly 1-3.5 dm. long, reticulate: panicles 1—4 dm. long: sepals ovate: 

 petals oblong or nearly so, 3. .5-4 mm. long: drupes 5-10 em. long, aromatic. — 

 Hammocks. Nat. of the E. Indies, and cultivated. — F. K. (Bah., Cuba, Ant.) 

 Maxgo. 



2. METOPIUM P. Br. Shrubs or trees. Leaf-blades pinnately com- 

 pound. Flowers dioecious, in open panicles. Sepals 5. Petals 5. Ovary 

 equilateral: styles united: stigmas 3-lobed. Drupe not oblique. 



1. M. toxiferum (L.) Krug & Urban. Shrub, or tree becoming 14 m. tall, 

 with a very poisonous sap : leaflets 3-7 ; blades ovate, leathery, 3-9 cm. long : 

 panicles 1-2 dm. long: sepals reniform or suborbieular : petals oblong to ovate: 

 drupes 10-15 mm. long. — Hammocks and coastal sand-dunes, and pinelands. — 

 F. K. (Ball., Cuba, Ant.) — Poisonwood. Coral-sumac. Hog-gum. Doctor- 

 gum. 



3. TOXICODENDRON [Tourn.] Mill. Shrubs, trees, or vines, with poi- 

 sonous sap. Leaf-blades pinnately compound. Flowers polygamous or dioe- 

 cious, in rather dense panicles. Sepals 4-6. Petals 4-6. Ovary glabrous: 

 styles short. Drupe mostly glabrous, the sarcocarp wax-secreting. Seeds ribbed. 



1. T. radicans (L.) Kuntze. Shrub with pubescent twigs: blades of the 

 leaflets leathery, ovate to oblong-ovate, 3-5 cm. long: drupes 2.-5-3 mm. in 

 diameter. — Hammocks. — F, K. (Ber., Bah.) — Poison-oak. Poison-ivy. 



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

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

 panicles. Sej^als commonly 5. Petals commonly 5. Ovary pubescent: styles 

 short. Drupe pjubescent. Seed smooth and even. — Sumac. 



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

 scarcely 1 mm. long. 1. /?. (ihluaifolUi. 



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



linear-oblong, fully 1 mm. long. 2. R. leucantha. 



1. R. 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. 

 [Schmaltzia obtusifolia Small.] — Pinelands. 



2. R. leucantha Jacq. Shrub or tree becoming 9 m. tall: leaflets 15-33; blades 

 narrowly oblong to linear-lanceolate, 3-9 cm. long: petals about 3 mm. long: 

 stone of the drupe about 3 mm. long. — Hammocks. — (Cuba.) — Southern- 

 sumac. 



Family 2. AQUIFOLIACEAE. Holly Family. 



Shrubs or trees. Leaves alternate: Ijlades simple. Flowers perfect 

 or polygamous. Calyx of 4—6 persistent sepals. Corolla of 4-6 petals 

 which are often united at the base. Androecium of 4r-6 stamens. Gynoe- 

 cium of 4r-8 united carpels. Fniit dnii^aceous. 



