ANALYTICAL KEY TO THE FAMILIES 



Leaves oblong 1 , narrowed at the ends, sometimes nearly entire. 



Symplocaceae (p. 752). 

 Leaves membranaceous. 



Leaves oblong or lanceolate, acuminate, glabrous or puberulous while 

 young, turning scarlet in the autumn. 



Oxydendrum in Ericaceae (p. 724). 



Leaves ovate to elliptical, stellate-pubescent while young, turning 

 yellow in the autumn. Styraceae (p. 754). 



ves palmately lobed. 

 Stipules large, foliaceous, united ; branchlets wHhout terminal buds. 



Platanaceae (p. 343). 

 Stipules small, free, caducous ; branchlets with terminal buds. 



Liquidambar in Hamamelidaceae (p. 339). 

 **** Leaves inconspicuous or wanting ; spiny or prickly trees. 



Branches or stems succulent, armed with numerous prickles. 



Cactaceae (p. 684). 

 Branches rigid, spinescent. 



Leaves minute, narrowly obovate. 



Branchlets bright green. Kceberliniaceae (p. 681). 



Branchlets red-brown. Dalea in Leguminosae (p. 570). 



Leaves scale-like. Canotia in Celastraceee (p. 623). 



**Leaves compound. 

 -* Leaves 3-foliolate, without stipules. 



Leaves persistent ; leaflets entire. Hypelate in Sapindaceae (p. 654). 



Leaves deciduous, strongly scented and bitter ; leaflets serrate or entire, acute. 



Ftelea in Rutaceae (p. 587). 

 -Leaves pinnate. 



a Leaves twice pinnate ; stipules present. 



Branches and stem armed with scattered prickles ; leaves 2-4 long ; leaflets 

 serrate, 2'-3'long. Araliaceae (p. 704). 



Branches unarmed, or armed with axillary or stipular spines ; leaflets entire or 

 crenate-serrate. 



Zygia, Lysiloma, Acacia, Leucaena, Gymnocladus, Gle- 

 ditsia in Leguminosae (pp. 535, 538, 540, 545, 553, 555). 

 aa Leaves equally pinnate. 



Stipules wanting ; leaves persistent ; leaflets entire. 



Leaflets 2-4, generally oblong-obovate. Exothea in Sapindaceae (p. 653). 

 Leaflets 6-12. 



Leaflets obtuse, 6-12. 



Leaflets 8-12, 2'-3' long ; leaves occasionally opposite. 



Simarubaceae (p. 589). 



Leaflets 6-8, !'-!' long. Fagara coriacea in Anacardiaceae (p. 584). 

 Leaflets acuminate, 6-8. Meliaceae (p. 593). 



Stipules present ; leaves deciduous or persistent. 



Prosopis, Parkinsonia, Cercidium, Eysenhardtia, Olneya 

 in Leguminosae (pp. 547, 559, 562, 569, 575). 

 aaa Leaves unequally pinnate. 

 b Stipules present. 



Leaflets sharply serrate ; leaves deciduous ; winter-buds resinous. 



Sorbus in Rosaceae (p. 356). 



Leaflets entire or crenately serrate ; leaves deciduous (persistent in Eysenhardtia, 

 Olneya, and in Sophora secundiflord). 



Gleditsia, Sophora, Cladrastis, Robinia, Olneya, Ichthy- 

 omethia in Leguminosae (pp. 555, 564, 567, 571, 575, 577). 



