ANALYTICAL KEY. xlix 



One or two ovules in each cell or carpel of the ovary. 

 Ovary of two distinct carpels, with a common style. 



Slu-ub. Two ovules in each carpel Ceebeea, p. 219. 



Herb. One ovule in each carpel Dichondra, p. 240. 



Ovary 5-cellecl, with 2 pendulous ovules in each . Pentaphylax, p. 28. 

 Ovary 4-celled, with 1 pendulous ovule in each . . Ilex, p. 64. 

 Ovary 2- or 3-celled, with 2 erect ovules in each, or 

 4-celled, with 1 erect ovule in each. 



Tree. Fruit a berry Ehretia, p. 234. 



Herbs. Fruit of 4 1-seeded, or 2 2-seeded nuts . Boragine^, p. 234. 

 Herbs or chmbers. Fruit a capsule or berry . CONVOLVULACEiE, p. 235. 

 Stamens 1, 2, or 3 less in number than the corolla-lobes. 



Stamens 2. Corolla regular, 4- or more lobed Jasminace^e, p. 214. 



Stamens 2 or 4. Corolla more or less irregular. 



Ovai'y l^celled, with 1 central placenta. Corolla spurred Utriculaeia, p. 255. 

 Ovary l-celled, with 2 parietal placentas. 



Leafless root-parasite ^Eginetia, p. 257. 



Leaves opposite or radical Gtesneriace^, p. 257. 



Ovary 4-lobed, v^ith 1 ovule in each lobe Labiate, p. 274. 



Ovary 2-ee]led, with 2 collateral ovules in each cell, or 4- 



celled, with 1 ovvde in each Yeebenace^, p. 267. 



Ovary 2-celled, with several ovules (or rarely only 2 super- 

 posed) in each cell. 

 Seeds attached to hooked or cup-shaped retinacula . Acanthace^, p. 259. 

 Seeds without retinacula Scrophulaeine-E, p. 245. 



I. A%)eialous Dicotyledons. 



(If the pistil is apocarpous or the stamens more tlian twice the perianth-segments, 



see Polypetals.) 



Anthers opening in valves turned upwards. Trees, shrubs, or 



rarely leafless twiners Laueine^, p. 289. 



Antliers opening longitudinally. Trees with pinnate leaves. 



Flowers hermaphrodite. Fruit succulent Nephelium, p. 46. 



Flowers unisexual. Fruit small, on a large thin 3-lobed 



bract Engelhaedtia, p. 318. 



Anthers opening longitudinally. Leaves not pinnate. 

 Floicers wJiolly or partially hermaphrodite. 

 Perianth none. 



Anthers 1 or 3, on the top of the ovary. Shrubs. 



Leaves opposite. Spikes without bracts .... Chloeanthus, p. 334. 

 Stamens 3, at the base of the ovary. Herb. Leaves 



alternate. Spikes with 4 coloured bracts .... Houttutxia, p. 333. 



Perianth superior, 5-cleft Hamamelide^, jj. 130. 



Perianth superior, irregular, with a long bent tube . . Aristolochia, p. 333. 

 Perianth contracted and breaking off above the ovary so 



as to appear superior, tubular, 4-lobed El.eagnfs, p. 298. 



Perianth, inferior. Ovary fi'ee. 

 Herbs. 



Stipules sheathing or annidar Polygonaceje, p. 286. 



Stipules none or scarious. 



Ovary 3-celled MoLLrGO, p. 23. 



Ovary l-celled, with 1 or rarely few ovules. 



Perianth herbaceous, usually obtuse . . . Chenopodiace.t:, p. 281. 



Perianth usually scarious or acute Amarantaceje, p. 283. 



Trees or shi'ubs. 



Perianth of 4 linear segments, bearing the stamens . Heljiia, p. 295. 



