IVKV, BASED UPON FRUIT. 19 



Smoothish, globose, about i in diameter, in cymes with leaf-like bract 



attached 3. TILIA AMERICANA. 



Rough, with scale-like points, ovate, coriaceous. 



114. PLANERA AQUATICA. 

 c 6 . Pod (legume) which is 



d. Oblong, flat, about 2 in. broad and curved .27. GYMNOCLADUS CANADENSIS. 

 d 2 . Linear or nearly so 



10-18 in. long, contorted and twisted 28. GLEDITSCHIA TRIACANTHOS. 



4-6 in. long, subterete, compressed between the seeds and thick- 



valved 129. PROSOPSIS JULIFLORA. 



3-4 in. long, 2-8 seeded and thin valved.. 128. CERCIDIUM TORREYANUM. 

 d 3 . Obliquely ovate (1-2 in. long), long stalked and mostly 1-seeded. 



109. GLEDITSCHIA MONOSPERMA. 



d 4 . Ovate, compressed and with accrescent calyx 154. DALEA SPINOSA. 



r 7 . Pome ; capsules 

 d. Cartilaginous ; fruit 

 e. Sunken at insertion of pedicel, 

 /. Globular 



Large, 1 in. or more, distinctly 5-celled 30. PYRUS MALUS. 



Small, more or less 10-celled 59. AMELANCHIER CANADENSIS. 



/-. Fattened-globose, waxy, fragrant and very tart.. 83. PYRUS CORONARIA. 



e' 1 . Not sunken at insertion' of pedicel, pyriform 57. PYRUS COMMUNIS. 



d' J . Not cartilaginous, 1-5 bony seeds. 



in. in diameter, red or yellow, with white spots. 



58. CRATAEGUS PUNCTATA. 



i in. in diameter, leaves wedge-obovate. . . .85. CRATAEGUS CRUS-GALLI. 

 c 8 . Berry. 

 d. With persistent thickish calyx-lobes, large (about 1 in. or more), 



61. DIOSPYROS VIRGINIAN A. 

 d-. Without persistent calyx-lobes and smaller 



e. In thyrses 78. VITIS ^ESTIVALIS. 



e-. In compact-racemes and 



Hoary -tomentose 131. GARRYA ELLIPTICA. 



Smooth and flattened- globose 133. ARCTOSTAPHYLOS PUNGENS. 



e*. In open panicles 132. ARBUTUS MENZIESII. 



e 4 . Singly on the jointed flattened stem 184. OPUNTIA TUNA. 



c\ Fleshy, with custard- like edible pulp 76. ASIMINA TRILOBA. 



c 10 . Berry-like pome, f in. in diameter and borne in dense clusters. 



84. PYRUS SAMBUCIFOLIA. 

 r 11 . Hesperidum seeds in juicy pulp and rind leathery. 



Subglobose, flattened at the ends 103. CITRUS AURANTIUM. 



Globose-oblong, mammillate at the extremity 104. CITRUS LIMONUM. 



c 12 . Achenium. 



3-4-angled and with' membranous wing-like margins. 



108. CLIFTONIA LIGUSTRINA. 

 Linear- oblong, tipped with the prolonged tail-like style. 



130. CERCOCARPUS PARVIFOLIUS. 



c 13 . Baccate but with dry spongy pericarp 175. YUCCA ARBORESCENS. 



ft 2 . Dehiscent pericarp. 

 c. Subglobose, and 



d. Coriaceous or woody, dehiscent by 



e. 2-3 valves and containing one or very few large seeds with smooth shining 

 coat and a large scar (^Esculus), fruit 



Prickly and leaflets 7 6 JESCULUS HIPPOCASTANUM. 



Smooth and leaflets 5 127. J^SCULUS CALIFORNICA . 



e 2 . 4 more or less distinct valves (Carya). 

 /. Epicarp thick and separating quite freely to the base nut ridged , with 



thick shell, globular-ovoid and 

 g. Flattened, 



1 in. or less in length 36. CARYA ALBA. 



1 in. or more in length. 64. CARYA SULCATA. 



f/' 2 . Not so much flattened, usually 4-angled 90. CARYA TOMENTOSA. 



/ 2 . Epicarp only moderately thick and nut of medium size, moderately 

 ridged and with shell of medium thickness 65. CARYA PORCINA. 



