134 TILIACEAE, 
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. 
Tir1A. 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. 
I, 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 Io 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. 
