THE NURSERY-LIST 265 



C aladium . A raceoe. 



Handled by tubers, which have been kept dry or rested for 

 some time. The cut surfaces should be well dusted with powdered 

 charcoal to prevent decay. Place in small pots where the night 

 temperature is maintained from 60 to 65. Large tubers, if 

 sound, may be divided and the pieces potted; some also by 

 cuttings. New forms raised from seed. See Aracece, page 239. 



Calamagrostis. Graminece. 



Multiplied by seeds sown in autumn or spring. 



Calamus. Palmaceoe. 



Increased by seeds in heat. See Palms, page 377. 



Calandrinia. Portulacacece. 



Propagated mostly by seeds in this country, as they are annuals 

 or treated as such for flower-garden bloom. C. umbellata, and 

 other perennials, may also be grown from cuttings. 



Calanthe. Orchidacece. 



Readily handled by separating the pseudobulbs when repotting ; 

 young bulbs often appear on the top of the old ones ; the old bulbs 

 will start again the second year. 



Calathea. Marantacece. 



Tubers may be used for propagation, when produced. A 

 common method is to divide the crowns. When secondary growths 

 or suckers arise, they may be taken off below the joints, preferably 

 in spring before growth starts. 



Calceolaria (Slipperwort). Scrophulariacece. 



The herbaceous calceolarias, treated practically as annuals, are 

 grown from seed. Sow on finely sifted soil and be very careful 

 with watering ; it is a good plan to sink the pan or pot into water 

 when needed rather than to water on top. Temperature should be 

 about 60 ; protect from sun. Seeds may be sown from late spring 

 to early autumn to get plants for the succeeding winter and spring. 



The shrubby calceolarias may be grown from seeds the same as 

 the others, but cuttings may also be employed with good results. 

 When the plant is trimmed in late summer >or early autumn, the 

 cuttings of firm wood are taken, with two joints. The temperature 

 of the house should be about 45 to 50, and the cuttings should be 

 protected from the sun. 



