1 ANALYTICAL KEY. 



Perianth 4- or 5-lobed. Stamens alternate with the 



lobes or twice as many. Oruleslor2. . . . ThtMELEje, p. 295. 

 Perianth 5-lobed. Stamens 8, alternating with as 



many scales. Placentas 3, parietal Caseaeia, p. 121. 



Sepals 3 to 5, free. 



Ovary 2-lobed at the top Disttlium, p. 133. 



Ovary entire. Fruit 1-seeded UBTiOEa;, p. 323. 



Flowers wholly unisexual. 



Leaflets succulent, root parasite Baxanophoba, p. 110. 



Climbers, with tendrils CTJOnEBlTAOE^,p.l23. 



Trees, shrubs, or herbs. Perianth herbaceous or none. 

 No ovary. Ovule bare or in an open perianth. 



Ovule in the females or stamens in the males en- 

 closed in an ovoid perianth. Leaves opposite . Gnetum, p. 336. 

 Ovules and seeds in pairs under the scales of a 

 cone. Leaves alternate, or clustered and subu- 

 late CONIPEEJB, p. 336. 



Ovary l-oeUed, or if 2-oelled, with 1 ovule in each ceU. 

 Sfo perianth, at least ip the female. 



Female flowers forming - prickly 2-oelled burr, 



with 2 conical points and styles Xanthittm, p. 181. 



Flowers minute, crowded inside or outside of 



succulent receptacles TJetice^, p. 323. 



Flowers crowded in cylindrical leaf-opposed pe- 

 dunculate spikes Chatica, p. 335. 



Flowers in catkins Mteica, p. 322. 



Perianth herbaceous. 

 Stigma 3- to 5-lobed. Shrubs. 

 Leaves alternate. Flowers in spikes or catkins . Antidesma, p. 317. 

 Leaves opposite. Flowers in axiUary clusters . Henslowia, p. 299. 

 Style entire or 2-lobed. 



Fruit 1-seeded TJetice^, p. 823. 



Fruit of 2 cells or cocci EuPHOEBiACEa:, p. 299. 



Ovary 2-celled, with several ovules in each cell. 



Flowers in globular or ovoid heads. Tree . . . Liquidambae, p. 131. 

 Ovary 3- or more celled, or if 2-celled, with 2 ovules 

 in each. 

 Ovary 5-lobed. Fruit follicular. Trees with pani- 



etdate flowers Steeculiace^, p. 35. 



Ovary usually 3-celled, rarely 2- or several-celled. 

 Fruit dividing into cocci or baccate. Herbs, 



shrubs, or trees. Seeds albuminous .... Ettphokbiaces, p. 299. 

 Ovary 2-oelled. Fruit a 1-seeded nut, on a cup or in 

 a capsule-like involucre. Trees. No albumen . Amentace.e, p. 319. 



CLASS II. MONOCOTYLEDONS. 



(See p. 338.) 

 Stem woody. 



Leaves pinnate or digitate. Perianth double Palm^e, p. 339. 



Leaves simple. No perianth. 



Leaves prickly on the edges, in spiral rows Pandahe^e, p. 340. 



Leaves not prickly and not spiral GEAMiNBai' p. Am. 



Stem herbaceous or none. 



Pericmth none or of \ to Q small scales not longer than the ovary. 

 Flowers singly sessile within imbricated scales or glumes. 

 Leaf-sheaths entire. Each flower usually in the axil of 

 one glume without a palea , Cypeeacb.^, p. 383. 



