70 LEGUMINOSAE 



len at the nodes; angular brown homogeneous pith; alternate 

 low more or less heart-shaped or finally U-shaped leaf-scars 

 with 3 bundle-traces; small rounded sessile superposed more 

 or less concealed buds with several scales, the end-bud lacking; 

 large pinnate or bipinnate leaves with rather crenulate small- 

 ish leaflets-; inconspicuous polypetalous flowers in lateral clus- 

 ters; and often very large sometimes twisted thin legumes. 



1. Spines rounded: leaves mostly once-pinnate. 2. 



Spines flattened or absent: leaves mostly twice-pinnate. 3. 

 Spines wanting. 8. 



2. Tree. G. sinensis. 

 Shrub. G. sinensis nana. 



3. Leaves glabrate: pod 1- to 3-seeded. G. aquatica. 

 Leaves with pubescent vein-axils: pods many-seeded. 4. 



4. Leaflets obtuse or notched, scarcely 20. G. japonica. 

 Leaflets rather acute, over twenty. 5. 



5. Trees. 6. 



Shrub: unarmed. G. triacanthos elegantissima. 



6. Unarmed. G. triacanthos inermis. 

 Armed. 7. 



7. Scarcely weeping. (Common honey locust). G. triacanthos. 

 Weeping. G. triacanthos Bujotii. 



8. Tree. G. triacanthos inermis. 

 Shrub. G. triacanthos elegantissima. 



CERCIS. Redbud. 



Deciduous shrubs or small trees with smoky or brownish 

 wood with small ducts in wavy patterns or those of the spring 

 somewhat larger and more crowded, and fine but distinct med- 

 ullary rays; moderately slender zig-zag roundish twigs; round- 

 ish or angled homogeneous pale or pinkish pith; alternate 2- 

 ranked raised half-round or 3-angled small leaf-scars with 3 

 bundle-traces or a single crescent-shaped aggregate; stipule 

 vestiges above the leaf -scar; ovoid superposed lateral buds, the 

 uppermost often somewhat stalked, with several exposed scales 

 and the terminal bud lacking; rather large and heart-shaped 

 slender-stalked palmately nerved entire leaves; small pink or 



