134 TlLlACEAE. 



7. Climbing : leaves roundish or elongated. 8. 



Bushy : leaves rather broader than long. V. rupestris. 



8. Nodal diaphragms thin : stem green. V. vulpina. 

 Diaphragms thick : stem red. V. rubra. 



Family TILIACEAE. Linden Family. 



A rather small family furnishing the tough "bass ' formerly 

 much used for tying plants up, the very important fiber jute, 

 and the straight-grained basswood or whitewood, and an im- 

 portant source of honey; much planted as shade and street- 

 trees, especially in Europe. 



TILIA. Linden, Lime, Basswood. 



Deciduous trees with soft pale wood with minute scattered 

 ducts and very fine medullary rays ; moderate terete twigs with 

 large bast-rays in the bark ; round continuous pith ; 2-ranked 

 alternate half-elliptical leaf-scars with a number of scattered 

 bundle-traces ; elongated stipule-scars ; ovoid sessile green or 

 red buds with about 3 exposed scales, the terminal bud lacking; 

 rather large oblique or cordate petioled serrate 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. T. cordata. 



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

 Leaves moderate (7 cm.). 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. 





