102 STERCULIACEAE 



leaves; rather small white or creamy polypetalous flowers in 

 axillary corymbs with large adherent bract; and several small 

 hard indehiscent round fruits falling with the bracted peduncle. 



1. Leaves pubescent, at least on the nerves beneath. 4. 

 Leaves glabrate except in the vein-axils beneath. 2, 



2. Leaves green beneath. 3. 



Leaves white beneath. (Small-leaved linden). T. cordata. 



3. Leaves large (fully 10 cm.). (Basswood). T. americana. 

 Leaves moderate (7 cm.). (Linden). T. vulgaris. 



4. Leaves green beneath: fruit typically ribbed. 5. 

 Leaves whitened beneath. 8. 



5. Leaves not lobed. 6. 



Leaves broad-lobed. T. platyphyllos vitifolia. 



Leaves laciniate. T. platyphyllos laciniata. 



6. Tree broad-topped. 7. 



Tree rather oblong. T. platyphyllos pyramidalis. 



7. Twigs gray or greenish. (Large-leaved linden) .T. platyphyllos 

 Twigs yellow. T. platyphyllos aurea. 

 Twigs red. T. platyphyllos rubra. 



8. Leaves abruptly acuminate: fruit ribbed. 9. 

 Leaves gradually pointed, usually very oblique: fruit 



not ribbed. (Southern basswood). T. heterophylla. 



9. Petiole short. (Silver linden). T. tomentosa. 

 Petiole 6-7 cm. long. (Weeping linden). T. petiolaris. 



Family STERCULIACEAE. Sterculia Family. 

 A rather small family, chiefly tropical, yielding cacao or 

 chocolate: the following forming a conspicuous street tree 

 in the South. 



STERCULIA. Chinese Parasol Tree. 



Deciduous trees with smooth gray bark; gummy white 

 sap; stout green twigs with large round continuous white 

 pith; alternate 8-ranked round-ovoid buds, the lateral small 

 and the terminal large but short, with several brown-hairy 

 scale*; subelliptical low large leaf-scars with some 10 scatter- 

 ed more or less compound bundle-traces; narrow stipule-scars; 



