122 MISSOURI BOTANICAL GARDEN BULLETIN 
purples and deep violet-blues were obtained. At present the 
late-flowering kinds are being ignored, which is to be de- 
plored, for although they have smaller flowers, the panicles 
are denser and more pyramidal. The quality of lateness is 
‘worthy of crossing with the finest strains so as to extend the 
season and thus make the plant play its part to the fullest 
extent. Recently a remarkable strain was obtained in Eng- 
land as a result of a cross between P. paniculata and a hybrid 
form secured from a cross between P. canadensis and P. 
Laphamii. These two are early-flowering plants, ten to eigh- 
teen inches in height, with small panicles of bluish fragrant 
flowers. The new strain, P. Arendsii, is a vigorous grower 
of branching habit, with flowers varying in color from white 
to rose and pale violet. It attains a height of two feet and 
produces a succession of bloom from May to July. 
Of the various species of hardy phlox, one that deserves 
especial mention is Phlox subulata (moss or mountain pee) : 
This dwarf species is suitable for low borders and rockeries, 
orming a mat of pretty moss-like foliage over the surface of 
the ground. The plant is a very profuse bloomer, producing 
a great mass of pink or blue flowers, which hide the foliage 
completely. It blooms early in May and is exceedingly 
hardy. Hard frosts rarely cause any injury, although it is 
not unusual for patches to die away in winter when the 
weather is mild and damp. 
. Propagation —Phlox may be propagated by seeds, cut- 
tings, or division. The hybrid phlox will not breed true from 
seed but it is found that about forty per cent of the seed- 
lings will be as good as the parents, In order to secure the 
best results with seed, cross pollination is necessary. The 
seed should be sown in February in moderate temperature, 
and as soon as the seedlings are large enough to handle, they 
should be placed singly in 214-inch pots and grown in 
cold-frames or a greenhouse. The new plants should be set 
out early in the spring, allowing two to two and one-half 
feet between plants. In this manner it is possible to secure 
bloom the first season from seed. 
To perpetuate varieties of especial merit propagation b 
a is resorted to. Cuttings may be ta a the fall 
from flowering stems which had been previously cut back 
immediately after flowering. Cuttings two to three inches 
long should be selected, preferably with a heel, and rooted 
:0 sand in a shady cold-frame. They should then be potted 
In light sandy loam and kept in the cold-frame over winter — 
with a protection of sash and straw. Early in the spring ~ 
these young plants should be set out similarly to seedlings, 
or placed in a nursery row until they have attained sufficient 
