60 SPOXDIACEAE. 



Plants with resin-bearing tissues. Fam. 1. Spondiaceae. 



Plants not resin-bearing. 



Leaf-blades simple, pinnately veined. 



Each cavity of the ovary with a single ovule. 



Flowers in racemes : fruit capsular or leathery. Fam. 2. Cteillaceae. 

 Flowers not racemose : fruit a drupe. Fam. 3. Aquifoliaceae. 



Each cavity of the ovary with 2 or more ovules. Fam. 4. Celasteaceae. 



Leaf-blades simple and palmately veined or compound. 

 Leaves opposite. 



Fruit capsular. Fam. 5. Aesculaceae. 



Fruit a samara. Fam. 6. Aceeaceae. 



Leaves alternate. Fam. 7. Sapindaceae. 



Family 1. SPONDIACEAE. Sumac Family. 



Shrubs, trees, or vines, with milky, resinous, often acid or caustic sap. 

 Leaves alternate : blades simple or pinnately compound. Flowers monoe- 

 cious, dioecious, or polygamous. Calyx of 3-5 sepals. Corolla of 3-5 

 petals, larger than the sepals. Androecium of 3-6, or rarely more, stamens. 

 Gynoecium of 1, or of 3-5, more or less united carpels. Fruit a drupe or 

 a berry. 



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

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



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

 Drupe depressed, the coats ultimately separating. 



Drupe with a glabrous outer coat : stone ribbed. 3. Toxicodendeon. 



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



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

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

 4 or 5. Petals 4 or 5. Ovary oblique. Style 1, lateral. Drupe ovoid to some- 

 what reniform, smooth: seeds tenaciously fibrous. 



1. M. indica L. Tree: leaf -blades leathery, oblong to linear-oblong or linear- 

 lanceolate, 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 cm. long, 

 aromatic. — Winter & spr. 



The Maxgo, a native of the East Indies, grows in fields and hammocks in 

 southern peninsular Florida and on the Keys. The brownish heart-wood is rather 

 coarse-grained, light, and soft. {W. I.) 



2. METOPIUM P. Br. Trees. Leaf -blades pinnately compound. Flowers 

 dioecious, in open panicles. Sepals 5. Petals 5. Ovary equilateral. Styles 

 united: stigma 3-lobed. Drupe not oblique. 



1. M. toxifenim (L.) Krug. & Urban. Tree becoming 14 m. tall or shrub, 

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

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

 drupes 10-15 mm. long. — Spr. or all year. 



The PoisoNwooD grows in hammocks and pinelands on the Everglade Keys and 

 on the Florida Keys. Also on coastal sand-dunes at the lower end of the peninsula. 

 The dark-brown and red-streaked heart-wood is close-grained, heavy and hard, but 

 weak. Also known as Doctor-gum. (ir. /.) 



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

 poisonous sap. Leaf-blades pinnately compound. Flower? polygamous or 

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

 Styles short. Drupe mostly glabrous, the sarcocarp wax-secreting. Seed 

 ribbed. 



1. T. Vemix (L.) Kuntze. Small tree or shrub: blades of the lateral leaflets 

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



