414 



TILIACEAE. 



[VOL. II. 



About 12 species, natives of the north temperate zone, i in the mountains of Mexico. 

 Leaves glabrous or nearly so on both surfaces. i. T. Americana. 



Leaves glabrous above, pubescent beneath. 2. T. pubescens. 



Leaves gTabrous above, silvery- white beneath. 3. T. heterophylla. 



i. Tilia Americana L,. Bass-wood. Am- 

 erican Linden. White-wood. (Fig. 2411.) 



Tilia Americana L. Sp. PI. 514. 1753. 



T. glabra Vent. Mem. Acad. Paris, 4: 9. pi. 2. 1802. 



Tilia Canadensis Michx. Fl. Bor. Am. 2: 306. 1803. 



A large forest tree, 6o-i25 high, with spread- 

 ing branches; trunk 2-5 in diameter. Leaves 

 obliquely ovate, cordate or sometimes truncate at 

 the base, 2 / -5 / wide, coriaceous, glabrous on 

 both sides, or with some pubescence on the veins 

 of the lower surface, sharply serrate with glandu- 

 lar teeth, abruptly acuminate or acute; petioles 

 I'-a' long; floral bract 2 / -4 / long, often narrowed 

 at the base, strongly veined; cymes drooping, 6- 

 zo-flowered; flowers 5 // -7 // broad, fragrant; petals 

 yellowish-white, crenate, slightly longer than the 

 pubescent sepals; scales similar to the petals, but 

 smaller; fruit globose-ovoid, 4"-5" in diameter. 



In rich woods and along river-bottoms, New Bruns- 

 wick to Georgia, especially along the mountains, wot 

 to Manitoba, Nebraska and Texas. Wood soft, wr;ik , 

 light brown or reddish; weight per cubic foot 28 Ibs. 

 Used for cabinet work and for paper pulp. Called 

 also Whistle-wood. May-June. 



2. Tilia pubescens Ait. 

 wood or White-wood. 



Southern Bass- 

 (Fig. 2412.) 



Tilia pubescens Ait. Hort. Kew. 2: 229. 1789. 



Tilia Americana var. pubescens Loud. Arb. Brit, x: 374. 



1838. 

 Tilia Americana var. /fa/ten' Wood, Bot. & Flor. 64. 1870. 



A small tree, 4o-5o high, with a trunk i in diam- 

 eter. Leaves generally smaller than those of T. Amer- 

 icana, glabrous above, pubescent, or sometimes densely 

 woolly beneath; floral bracts commonly broader and 

 shorter, narrowed or rounded at the base; fruit glo- 

 bose, 2}4 // -3 // in diameter. 



In moist woods, Long Island to Florida, west to Texas, 

 mostly along the coast. Wood as in T. Americana, but 

 lighter in weight, about 24 Ibs. to the cubic foot. 

 May-June. 



3. Tilia heterophylla Vent. White Bass- 

 wood. Bee-tree. (Fig. 2413.) 



Tilia heterophylla Vent. Mem. Acad. Paris, 4: 16. pi. 5. 



1802. 

 Tilia alba Michx. f. Hist. Arb. Am. 3: 315. pi. 2. 1813. 



Not Waldst. & Kitt. 

 Tilia heterophylla var. alba Wood. Bot. & Flor. 64. 1870. 



A forest tree, 45-7O high, with a trunk iX-3X 

 in diameter. Leaves larger than in either of the pre- 

 ceding species (often 6 / -8 / long), inequilateral, cor- 

 date or truncate, glabrous and dark green above, white 

 beneath with a fine downy pubescence, acute or acu- 

 minate; 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, mountains of southern Pennsylvania, south 

 along the Alleghanies and Blue Ridge to Florida and Ala- 

 bama, west to central Illinois, Kentucky and Tennessee. 

 Also called Wahoo. Wood weak, light brown; weight per 

 cubic foot 26 Ibs. June-July. 

 The European Linden, or Lime Tree, Tilia Europaea 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. 



