2. Tilia Pubéube-Wood Or White-Wood

Fig. 2844

Tilia pubescens Ait. Hort. Kew. 2: 229. 1789. T. americana var. pubescens Loud. Arb. Brit. 1: 374. 1838. A small tree, 40°-50° high, with a trunk 1° in diameter. Leaves generally smaller than those of T. americana, glabrous above, brown-pubescent, or sometimes densely woolly beneath; floral bracts commonly broader and shorter, narrowed or rounded at the base; fruit globose, 2 1/2" -3" in diameter.

In moist woods, Virginia to Florida, west to Texas. Erroneously reported from farther north. Wood as. in T. americana, but lighter in weight, about 24 lbs. to the cubic foot. May-June.

Tilia leptophýlla (Vent.) Small, ranging from Missouri to Texas, differs in its thinner, less hairy leaves, but is probably a race of this species.

3. Tilia Heterophýlla Vent. White Bass-Wood. Bee-Tree. Linden

Fig. 2845

T. heterophylla Vent. Mem. Acad. Paris 4: 16. pl. 5. 1802.

A forest tree, 45°-7o° high, with a trunk 1 1/2°-3 1/2° in diameter. Leaves larger than in either of the preceding species (often 6'-8' long), inequilateral, cordate or truncate, glabrous and dark green above, white beneath with a fine downy pubescence, acute or acuminate; floral bracts 3-5' long, narrowed at the base; flowers slightly larger and often fewer than those of T. americana; fruit globose, about 5" in diameter.

In woods, New York and Pennsylvania, south along the Alleghanies and Blue Ridge to Florida and Alabama, west to central Illinois, Kentucky and Tennessee. White linn. Teil- or tile-tree. Cottonwood. Silver-leaf poplar. Wahoo. Wood weak, light brown; weight per cubic foot 26 lbs. June-July.

The European linden or lime-tree, Tilia europaèa L., is planted as an ornamental tree in parks and on lawns. It may be distinguished from any of our species by the absence of scales at the base of the petals. Its name, Lin, was the origin of the family name of Linnaeus.

4. Tilia Michaùxii Nutt. Michaux's Bass-Wood

Fig. 2846

T. alba Michx. f. Hist. Arb. Am. 3: 315. 1813. Not L.

T. Michauxii Nutt. Sylva, Ed. 2, 92. 1842

A forest tree, sometimes 900 tall, the bark broadly furrowed, or that of the branches smooth and silvery gray Leaves firm in texture, 9' long or less, serrate, whitish-pubescent beneath, the apex acuminate, the base usually very oblique; floral bracts spatulate, attenuate toward the base and decurrent on the peduncle to above its base; staminodes spatulate; petals light yellow, 3"-5" long; fruit ovoid or globose, 4"-7" long.

In rich soil, Connecticut to Ohio, Georgia, Kentucky and Alabama. June-July.