XX ANALYTICAL KEY TO THE GENERA 



ee Stipules wanting. 



Leaves resinous-dotted, aromatic, l'-4' long. Myrica (p. 163). 

 Leaves not resinous-dotted, crenately serrate, 4'-6' long. 



Leaves dark green, glabrous below. Gordonia Lasianthus (p. 751). 

 Leaves yellowish green, pubescent below, sometimes nearly entire. 



Symplocos (p. 831). 

 dd Juice milky. 



Petioles 2|'-4' long; leaves broad-ovate. Hippomane (p. 652). 



Petioles about \ f long; leaves elliptic to oblong-lanceolate. 



Gymnanthes (p. 654). 



cc Leaves entire (rarely sparingly toothed on vigorous branchlets). 

 d Stipules present. 



e Stipules connate, at least at first. 



Stipules persistent, forming a sheath surrounding the branch above 

 the node; leaves obtuse. Coccolobis (p. 338). 



Stipules deciduous, enveloping the unfolded leaf. 

 Leaves ferrugineous-tomentose beneath. 



Magnolia grandiflora (p. 345). 



Leaves glabrous beneath, with milky juice. Ficus (p. 333) . 



ee Stipules free. 



/Juice milky; leaves oval to oblong, 3'-5' long. Drypetes (p. 650). 

 ff Juice watery. 



g Leaves obtuse or emarginate at apex. 



Leaves with ferrugineous scales beneath, their petioles 

 slender. Capparis (p. 365). 



Leaves without ferrugineous scales. 

 Leaves soft-pubescent on both sides. 



Colubrina cubensis (p. 730). 

 Leaves glabrous at least at maturity. 



Leaves rarely 2'-3' long, standing on the branch at 



acute angles. Chrysobalanus (p. 583). 



Leaves rarely more than 1' long, spreading (sometimes 



3-nerved). Ceanothus spinosos (p. 728). 



~gg Leaves acute or acutish. 



Petioles with 2 glands. Conocarpus (p. 766). 



Petioles without glands. 



Leaves and branchlets more or less pubescent, at least 



while young. 

 Leaves fascicled except on vigorous branchlets. 



Cercocarpus (p. 550). 

 Leaves not fascicled. 



Winter-buds minute, with few pointed scales. 

 Leaves rounded or nearly rounded at base. 



Colubrina sp. 1, 3 (p. 729). 

 Leaves broad-cuneate at base. 



Ilex Cassine (p. 670) . 



Winter-buds conspicuous, with numerous scales. 

 Leaves usually lanceolate, entire, covered below 

 with yellow scales. Castanopsis (p. 234) . 



Leaves oblong or oblong-obovate, repand-dentate, 

 fibrous tomentose below. Lithocarpus (p. 236) . 

 Leaves and branchlets glabrous. 



Leaf-scar with 1 bundle-trace. Ilex Krugiana (p. 672) . 

 Leaf-scar with 3 bundle-traces. Cherry Laurels. 



Primus sp. 19-22 (p. 579) . 

 dd Stipules wanting. 



e Leaves aromatic when bruised. 



Leaves resinous-dotted. Myrica (p. 163). 



Leaves not resinous-dotted. 



Leaves obtuse, obovate, glabrous. Canella (p. 753). 



Leaves acute. 



