THE AQUARIUM, OCTOBER, 1892. 
diameter. ‘Together with the flower 
buds there appear several small arrow- 
shaped leaves; these float upon the sur- 
face in support of the flowers. The 
latter are borne about two inches above 
the water, opening about 9 or 10 
o'clock in the morning to close again 
about 3 o’clock in the afternoon, very 
much like the flowers of the white 
pond lilies. 
According to their habit, we would 
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grown together in a fountain basin 
with their branches intermingled, and 
seen from above then, one imagines see- 
ing a submerged bed of pink and light 
green roses. 
This distinction in color led us to 
name them accordingly (. viridifolia 
and ©. rosefolia. Both are ornamental 
water plants of the very highest order. 
They are of easy culture, but north 
of Virginia they are not hardy. Asan 
CABOMBA ROSAEFOLIA AND SINGLE LEAF OF C. VIRIDIFOLIA. 
call the Cabombas ‘‘ creepers,” as it is 
their nature to creep along the bottom 
and strike roots near every joint where 
a shoot formsa fork. New shoots or 
sprouts have an upright tendency un- 
til too heavy. These shoots tend to 
make the plants wonderful in their 
effect upon an observer. When the 
whorls of leaves appear about four to 
six inches below the surface of the 
water, sometimes three inches in diame- 
ter, they resemble a Hermosa rose in 
full bloom, a mystery to most specta- 
tors, especially when both varieties are 
additional point of interest it is to be 
stated that the Cabombas sleep after 
dark. In this condition they close 
their leaves and lay them in an upright 
position close to the stems. 
A third variety, Cabomba Carolinen- 
sis, iS very pretty, too, but without a 
decisive character neither one way nor 
the other, it being of the ordinary com- 
mon green observed on other plants. 
This is of very easy culture and very 
abundant in ponds and creeks in Mary- 
land and Virginia, where it was intro- 
duced by carp culturists. 
