Production of Fruits and Seeds in Certain Plants. 101 
fruit-clusters of thirteen plants were examined. A perfect fruit 
is one fully matured and fleshy, an abortive fruit is an imper- 
fect, shriveled and seedless one. 
No. of No. of Perfect | No. of Abortive 
Piant. Fruits. Fruits. 
| | | 
Rope 7 51 
i ata 6 22 
ley oe om | 4 | 60 
4 10 | 58 red. 
5 8 - Yh 
6 iI 2 
7 | 40 ices 
8 | I4 24 sé 
9 | 15 | 57 
I9 ) Ir as‘ 
II ° 32 
i ie 9 62 
} 43 | 9 4i 
Rhododendron (Azalea) nudiflorum, Torr. (Pinxter-Flower). 
—The whole bush was examined in the enumeration of perfect 
and abortive fruits. The two plants were quite small although 
fully formed. 
| | 
| No.of | 
Plant. | Perfect Fruits. Abortive Fruits. 
I 4 70 
Z } Cc 20 
Cornus florida, L.(Flowering Dogwood).—Professor Sargent 
in his Silva (V, 67) says regarding the fruit of this plant: 
“The fruit ripens in October, usually only three or four 
drupes being developed from a head of flowers.’”’ In the table 
below, details are given for two trees; the first tree having 
34 clusters of fruits and the second one 102 clusters, originally ; 
each of the flower clusters from which the fruits came had 
four white attractive bracts. 
