ae one 
LIST OF PLANTS gg 
slits may also be made at intervals in the stem, and 
pieces of Epiphyllum, cut wedge-shaped at the base, 
inserted and secured from moving either by binding 
with raffia or by thrusting a Cactus thorn or a pin 
through both stem and scion. Neither clay nor grafting- 
wax is needed. Cereus flagelliformis (Rat’s-tail Cactus) 
is often grafted on the Pereskia to form drooping 
specimens. Grafting Cacti is a very simple and 
generally successful operation if carried out during the 
period of growth, when the sap of both stock and scion 
is in motion. 
Raising from Seed.—This is a most interesting opera- 
tion on account of the peculiar changes of form assumed 
in the different stages of growth, so completely unlike 
anything in ordinary seedling plants. Of late years 
many very handsome-flowered Phyllocacti, with a wide 
range of the most beautiful and delicate colours, have 
been raised by careful hybridisation. The seed will 
germinate in from two to four weeks if sown in. the 
spring in well-drained pots of sand and loam covered 
with a very thin sprinkling of finely-sifted soil and 
with a pane of glass on top until the seedlings 
appear. The pots should be plunged in a bottom heat 
of 75 to 80 degrees in a warm house. Plant separately 
_ in small pots when large enough to handle, and in the 
following ‘winter supply only just sufficient water to 
prevent shrivelling. 
CaLapiuM.—Increase by dividing the tubers in spring. 
The tubers may also be cut to single eyes when starting 
intogrowth. Dust the cut portions with finely-powdered 
charcoal to prevent decay, then pot them separately into 
small pots, place in a brisk heat, and keep the compost 
only slightly moist until growth is active. 
