C/ESAIPINIA CALANTHE. 195 



Stock are both slender, cleft-grafting should be adopted ; 

 if both are broad it is best to make horizontal sections, 

 placing them together and securing in proper position by 

 tying with raffia, but not too tightly, or the surface may 

 be injured. See Fig. 134. 



Caesalpinia. Li\s:iimi>iosa:. 



Licreased by cuttings, which are somewhat difficult to 

 root but may succeed if taken from the ])lant in a grow- 

 ing state and planted in sand with a hand-glass over 

 them in heat. 



Cajanus, Lcgmninosa:. 



Plants are usually raised from seeds obtained from the 

 West Indian Islands and India. Also grown from young 

 cuttings, put in sand with a hand-glass over them, in heat. 



Caladium. Aroidea:. 



Increased by tubers, which have been kept dry or rested 

 for some time. Place in small pots in a stove or pit, 

 where the night temperature is maintained at from 60° 

 to 65°, and syringed daily once or twice at least. Large 

 tubers, if sound, may be divided and the pieces potted. 

 Some also by cuttings. Taro is the tuberous roots of C. 

 esculetitum. 



Calamagrostis. Gramine(T. 



Increased by seeds sown in autumn or spring. C. are- 

 naria (now Aminophila ai'iindinacca), used for holding 

 sands along seashores, is propagated by division, and can 

 probably be handled easily by root cuttings. 



Calamintha. Labiatcc. 



Increased by seeds, root divisions, or cuttings in spring. 



Calamus. Palviacece. 

 Increased by seeds. 



Calandrinia. Portiilacacea;. 



Increased by seeds sown in pots where they are in- 

 tended to flower, as transplantation, unless performed 

 with more than ordinary care, will check their growth or 

 result in loss. 



Calanthe. Orchidacctv. 



As a rule, the natural annual increase in the number of 

 pseudo-bulbs meets the requirements of most cultivators. 



