102 
EVOLUTION EXHIBIT 
In connection with the Twenty-Fiith Anniversary the exhibit 
in conservatory no. 2, illustrating the evolution of plants, was im- 
proved. The central bench is now arranged in steps, represent- 
ing Algae, Mosses, Clubmosses, Ferns, and Gynimosperms, with 
the two side benches for Flowering Plants, one for Dicotyledons, 
the other for Monocotyledons. 
IkIS AND NARCISSUS 
The report of Dr. George M. Reed, in charge of /ris collections, 
will be found in the statistical report attached hereto, page 103. 
AMERICAN INDEX OF CULTIVATED TREES AND STHRU 
This publication, with which I have been occupied for some 
years with Mr. Alfred Rehder, of the Arnold Arboretum, and Mr. 
Henry Teuscher, of the New York Botanical Garden, is almost 
ready for the printer. 
COURSES 
Ten outdoor lessons on “ Plant Families,” dealing chiefly with 
the structure of flowers, were given during the spring. They 
were continued in the fall with eight lessons on fall flowers, leaves, 
and fruits, and concluded with two lectures on “ Plant-Animal In- 
terdependence in Evolution.” A spring course of ten lessons on 
* Ornamental Shrubs” was given by Mr. Charles F. Doney. 
Statistics will be found appended to this report. 
Respectfully submitted, 
ALFRED GUNDERSEN, 
Curator of Plants. 
