1	Disk extrastaminal; flowers bisexual; fruit baccate with seeds surrounded by mucilaginous arils or capsules transversely flattened, 1-3-fascicled		(2)
+	Disk intrastaminal or stamens on disk; flowers unisexual or bisexual; fruit capsular, drupaceous, samaroid, or baccate		(4)
2 (1)	Fleshy or ligneous berry; seeds wingless; scandent often arboreous shrubs or small trees.		12 Salacia
+	Trilobed capsules, compressed, dehiscing into 2 valves; seeds winged; ligneous lianas		(3)
3 (2)	Flowers large, petals at least 4 mm, recurved in bloom; disk conspicuous, cupular and protuberant.		13 Loeseneriella
+	Flowers small, petals up to 3 mm, erect in bloom; disk inconspicuous.		14 Pristimera
4 (1)	Fruit samaroid, drupaceous, or baccate		(5)
+	Fruit capsular		(6)
5 (4)	Samara, 3-winged at maturity; scandent shrubs.		10 Tripterygium
+	Drupe or berry; shrubs, small trees, or lianas.		11 Pleurostylia
6 (4)	Sepals, petals, and ovaries 4- or 5-merous; disk unlobed, thick; seeds arillate		(7)
+	Sepals and petals 4- or 5-merous, ovaries only 2- or 3-merous; disk lobed or nearly nonexistent; seeds typically arillate, sometimes aril absent		(9)
7 (6)	Leaves alternate, stipulate; stipules long and fimbriate, persistent after blooming; petals persistent during fruiting, enlarging into 4 wings.		3 Monimopetalum
+	Leaves opposite, stipulate; stipules thin and small, caducous; petals caducous		(8)
8 (7)	Flowers and fruit 4- or 5-merous; disk flat, not circling ovary; ovules 2-12 per locule; fruit axis splitting with valves when fruit dehisces; seeds 2 or more per cell, attached to top or base at inner angle; raphe not branched.		1 Euonymus
+	Flowers and fruit 4-merous only; disk lobes suberect, circling ovary; ovule 1 per locule; fruit axis splitting or not, free from valves when fruit dehisces; seeds only 1 per cell, hanging from top of persistent axis; raphe branch usually at base of seed, bands ascending on other side toward hilum.		2 Glyptopetalum
9 (6)	Leaves opposite; aril partially covering seed or absent		(10)
+	Leaves alternate; aril covering seeds or incompletely so at base of seeds		(11)
10 (9)	Aril decurrent in wing-form, partially covering seed (cultivated).		8 Catha
+	Aril absent (native).		9 Microtropis
11 (9)	Leaf blade veins regular in dense nets, petiole bent, enlarged; aril dry, white or brown.		7 Bhesa
+	Leaf blade veins irregular in sparse nets, petiole erect, not enlarged; aril fleshy, reddish, yellow, or white		(12)
12 (11)	Typically scandent shrubs; carpels usually 3 in separate locules; stigma 3, each dividing, similar to 6 lobes; aril completely covering seeds.		4 Celastrus
+	Typically erect small trees or shrubs; carpels 2 or 3 in 2 or 3 locules; stigma 2 or 3, slightly lobed; seeds only basally or lower half covered by arils		(13)
13 (12)	Plants usually thorny; twigs thornlike, bearing leaves and flowers, or twigs with needlelike thorns; leaf blade small, usually shorter than 7 cm.		5 Gymnosporia
+	Twigs usually unarmed or few thorned, old branches often with sturdy thorns; leaf blade large, usually 7-25 cm.		6 Maytenus