78 Introduction to Botany. 



TILIACE^. LINDEN FAMILY. 



Mostly trees or shrubs. Leaves simple and generally alternate, with 

 small, deciduous stipules. Flowers axillary or terminal, cymose or 

 paniculate. Sepals mostly 5, valvate. Petals of the same number as 

 the sepals, sometimes less or wanting, mostly valvate. Stamens many, 

 5-io-adelphous. Ovary 2-io-celled. Styles lobed or entire. Pedun- 

 cles springing from a leaflike expansion. 



I. TILIA. Linden or Basswood. 



(The classical Latin name.) 



Trees, with serrate, cordate, somewhat inequilateral leaves, and white 

 or cream-colored flowers. Sepals and petals 5. Stamens many, coher- 

 ing in 5 sets (5-adelphous) . Ovary 5-celled with 2 ovules in each cell. 

 Style i ; stigma 5 -toothed. Fruit, 1-2 -seeded, drupaceous. 



1. Tilia Americana, L. BASSWOOD or AMERICAN LINDEN. A large tree. 

 Leaves 2 to 5 inches wide, smooth on both sides. Flowers fragrant and much 

 visited by bees for nectar. Along river bottoms. 



2. Tilia heterophylla, Vent. WHITE BASSWOOD. Leaves whitened beneath 

 with a downy pubescence. In mountainous, wooded districts. 



MALVACEJE. MALLOW FAMILY. 



Herbs or shrubs, with alternate leaves having small, deciduous 

 stipules. Flowers mostly perfect, often showy. Sepals mostly 5 

 and valvate, somewhat united at the base. Petals of the same number 

 and convolute in the bud. Stamens many, united by their filaments 

 around the pistil, and adherent to the bases of the petals. Anthers 

 i-celled. Ovary of several cells, entire or lobed. Styles united below, 

 but separate above and usually projecting beyond the stamens. 



I. MALVA Mallow. 



(The Latin name.) 



Herbs. Calyx with a 3-leaved involucre at the base. Stamen-column 

 bearing anthers only at the summit. The numerous styles stigmatic 

 along the inner side. Fruit flattened and circular, of several beakless 

 I -seeded carpels. 



i. Malva rotundif lia, L. (L., rotitndns, round; folium, leaf.) RouND- 

 LEAVED or RUNNING MALLOW. Procumbent annual or biennial. Leaves round- 



