215 
14. Various horticultural collections, as for example: 
Flowering cherries, plums, apples, etc. 
Lilacs. 
Peonies. 
Azaleas and Rhododendrons. 
Iris (Bearded and Japanese). 
Cannas. 
Dahlias. 
Hardy Asters. 
Hardy Chrysanthemums. 
15. Miscellaneous plantations. 
a. Naturalistic plantings of bulbs. 
Crocus, Daffodils, Poets Narcissus, ete. 
b. Decorative and screen plantings. 
16. Experimental Garden (Test Garden for Beardless Iris; 
Plant Pathology and Plant Breeding Plots). 
17. Nursery. 
As noted under Docentry (p. 200), arrangements may be made 
for viewing the plantations under guidance. They are open free 
to the public daily from 8 a.m. until dusk; on Sundays and holidays 
from 10 a.m. until dusk. 
Automobiles.—Automobiles are not regularly admitted to 
the Garden. On application to the Director special permits for 
automobiles are issued, fo members only, to enable those who may 
not be able to walk through t 
— 
1e plantations to enjoy the Garden. 
Arrangements must be made in advance (preferably one day in 
advance). Jn every case the car must be accompanied by a rep- 
resentative of the Garden. 
Systematic Section 
The main part of the outdoor plantations 1s « 
— 
evoted to the Sys- 
tematic Section, which extends from north to south through the 
central part of the Garden. Ifere the plants are grouped according 
to their botanical relationships, in orders, families, and genera, fol- 
lowing approximately the Engler system of plant classification. 
From the simpler and more primitive types of plants at the north 
end, to the more highly developed groups at the south, the Sys- 
