158 KEY AND FLORA 
groups. Ovary 5-celled, with 2 ovules in each cell; stigma 
5-lobed. Capsule 1-celled, 1-2-seeded; peduncle and bract 
deciduous with the matured fruit, the bract forming a wing 
by which the fruit is often carried to a considerable distance.* 
1. T. americana L. Basswoop, WuiTewoop. A large tree, some- 
times 125 ft. high. Leaves larger than in No. 2 (2-5 in. wide), often 
unsymmetrical, heart-shaped or truncate at the base, sharply toothed. 
Floral bract often narrowed at the base. Fruit somewhat ovoid, 1 
in. or more in diameter. Common in rich woods; occurs farther N. 
than No. 2. 
2. T. Michauxii Nutt. Basswoop. A tree of medium size. Leaves 
ovate, acuminate at the apex, obtuse and oblique at the base, mucro- 
nate-serrate, woolly on both sides or smooth above when old. Flowers 
fragrant; floral bract 2-3 in. long, usually rounded at the base. Fruit 
globose, about 4} in. in diameter. In rich woods. Bees gather large 
quantities of nectar from the flowers.* 
3. T. heterophylla Vent. Wuirre Basswoop. A large tree. Leaves 
larger than in 7°. americana or T, Michaucii, often 6-8 in, long, smooth 
and bright green above, silvery-downy underneath. In wooded or 
mountainous districts. 
4. T. europea L. European Linpen. A good-sized tree. Leaves 
roundish, obliquely heart-shaped, abruptly taper-pointed, finely 
toothed. Flowers differing from Nos. 1 and 2 in the absence of 
petal-like scales at the bases of the stamens. Cultivated from 
Europe. 
65. MALVACEZ. Matiow FamiLy 
Herbs or shrubs, with simple, alternate, palmately-veined 
leaves, with stipules. Flowers actinomorphic. Sepals 5, often 
surrounded by an involucre at the base. Petals 5. Stamens 
numerous, monadelphous. Pistils several, more or less dis- 
tinct. Fruit a several-celled capsule or a collection of 1-seeded 
carpels. 
I. ABUTILON Adans. 
Calyx 5-cleft, the tube often angled. Styles 5-20, with 
knobbed stigmas. Carpels as many as the styles, arranged in 
a circle, each 1-celled, 3-6-seeded, and opening when ripe by 
2 valves. 
1. A. striatum Dicks. Tassen Tree, Frowrrinc Mapur. A 
shrub 5-10 ft. high. Leaves maple-like, Flowers showy, solitary, 
