FAMILIES OF FLOWERING PLANTS 159 
representative of the family in the United States, occurring in the Ever- 
glades of Florida. 
Family Stackhousiaceae. Stackhousia Family. Consists of a sin- 
gle genus, with about 20 species, all herbs, natives of Australia and 
New Zealand. They have flowers with unequal stamens, and with the 
petals slightly united into a tube, but possess no features of especial 
interest. 
Family Staphyleaceae. Bladdernut Family. Trees and shrubs, 
comprised in 5 genera and about 25 species, widely distributed. They 
have the leaves pinnate or in threes, with regular perfect flowers in 
axillary or terminal clusters, the parts in fives. The interesting struc- 
tural character is found in the fruit, which is an inflated capsule in 
Staphylea, the bladdernut, a rather 
ornamental shrub, having creamy 
flowers and curious bladdery pods 
(see Fig. 188). 
Family Icacinaceae. Icaco Fam- 
ily. Contains about 40 genera and 
nearly 100 species, tropical trees or 
shrubs. They are close in structure 
to the Aquifoliaceae, but are often 
remarkable for the woolly flowers, 
one of which, of the genus Phytocrene, 
is shown in Fig. 186. The South 
American Villaresia Congonha, be- 
longing to this family, yields a tea 
similar to the true maté described 
above. 
Family Aceraceae. Maple Fam- 
ily. Consists of Acer, the maples, 
with about 100 species, and Dipter- 
onia, a monotypic genus of Asia, 
which differs in having the fruits 
winged on the whole circumference. 
The maples are a most interest- _—Fig. 137. The American spindle-bush (Eu- 
ing group of trees, and the different °"“5 4”7anus). Original. 
species have a very marked individuality. They are grouped accord- 
ing to the flawers, which may be in dense axillary clusters, like those 
of the red, or soft, and silver maples, which open before the leaves; in 
lateral flat-topped clusters or corymbs, often drooping, like those of the 
sugar maple, which open with the leaves; or they may be in long spikes 
or racemes opening after the leaves, as in the striped maple (see Fig. 
139). The petals are 5 in number, or wanting in some species; the sta- 
