linacejE. 61 



1. TILTA. Linn. Linden. 



Sepals 5. Petals 5, spatulate-oblong. Stamens nu- 

 merous; filaments cohering in 5 clusters with each other, or 

 free. Pistil with a 5-celled ovary, and 2 half-anatropous 

 ovules in each, a single style, and a 5-toothed stigma. Fruit 

 a sort of woody globular nut, becoming 1-celled and 1 to 2 

 seeded. — Fine trees with heart-shaped leaves and small cymes 

 of flowers, hanging on an axillary peduncle which is united 

 to a leaf-like bract. 



1. T. A.mericana, L. Bassicood. 



Leaves deeply cordate, abruptly acuminate, acutely serrate, coriaceous, smooth; 

 flowers in cymes; pitals truncate at the apex, crenate; style as long as the petals; 

 fruit ovate, somewhat ribbed. 



Rich wood*. Juiie. A line tree from 60 to 70 feet high, the trunk straight and 

 naked more than half this height, and 2 to 3 feet in diameter. Leaves 4 to 5 by 3 

 to 4 inches; those of the young shoots often more than twice this dimension. 

 Bracts yellowish, linear-obloug. Flowers yellowish-white, honey-bearing, fragrant. 

 The wood is white and soft, and much used by cabinet and coach makers. 



2. T. laxiflora, Michx. Loose-flowered Linden. 



Leaves cordate, gradually acuminate, serrate, membranaceous, smooth ; Jloicers 

 in loose panicles; petals ernarginate; s'ylcs longer than the petals ; fruit globose. 



Near tlv sea coast. May. Shrubby cr arboreous. A very distinct species, though 

 generally confounded with the former. Pttrsfr; Le±. 



3. T. ALBA, Michx. White Linden. 



Leaves obliquely-cordate, abruptly acuminate, whitish and thinly pubescent 

 beneath, with veins of the sama hue, smooth and bright green above, acuminatcly 

 6crrate; petxls ernarginate; (ca'c; spatulate ; styles nearly smooth. 



Word- and mountains. June. Trunk 30 — 4) feet h'gh, 1 to \]4 feet in diame- 

 ter; branc'tcs with a smooth silvery bark. Leaves 3 to 5 often 8 inches in diameter, 

 slightly oblique, an 1 with reddish ha rs in the axils of the veins beneath. Floieers 

 larger and whiter than in the ether species. 



4. T. EUROPEA, L. European Linden. 



A common ornamental tree, which is planted along the streets of our cities, is 

 easily distinguished from our native species by the absence of the petal-like scales 

 among the stamens. 



Order 24. LINAGES. 



Herjs with regular hyp-gyn-.us jlowzrs, t tram.err.us and pen'.amerous throughout, 

 strongly imbricate I calyx and c molule j> Us. Sepals 3 to 5, persistent. Petals cs 

 many as the sepals, unguiculate. Stamens as many as the petals, and alternate 

 with them at the base into a hypogynoUa Ping, which is often tcothed. Ovakt of 

 as many cells as sepa'.s and styles; stigua capitate. Seeds solitary in each cell, 

 compressed, suspended. 



1. LINUM. Linn. Flax. 



Sepals, petals, stamens, and styles 5. Capsule of 5 

 Q 



