FALL OR HOLLAND BULJS, ETC. 55 



L. candidum, the oldest known species, comes from the 

 Levant. Asia furnishes L. Chalcedonicum ; Siberia the 

 beautiful little L. tenuifolium, which is there grown as 

 an article of food. The United States contributes L. 

 superbum, L. Canadense, L. Philadelphicum, L. Cates- 

 bcei, L. Carolinianum, and L. Columbianum, together 

 with L. WasMngtonianum, L. Humboldtii, L. parvum, 

 L. Californicum, L. pardalinum, L. Roezlii, L. Parryi, 

 and L. Walkeri, from California. It may be added here 

 that the California Lilies often remain in the ground a 

 whole year before starting to grow. 



THE CALLA, 



or Lily of the Nile, is now known to botanists as Richardia 

 ^thiopica. It is largely grown for winter flowers, and is 

 of the easiest culture, the only attention being an abund- 

 ance of moisture, and an average temperature of seventy 

 degrees, whether grown in the greenhouse or sitting- 

 room. Although it will grow and flower during the 

 entire season without resting if sufficiently fed by being 

 re-potted, yet it is more profitable to dry it partly off, 

 say from June 1st to September 1st. This is best done 

 by placing the pots on their sides outdoors, so as to pre- 

 vent the rains from wetting the soil, and covering them 

 slightly with hay or moss, so as to keep the sun from 

 drying the roots too much ; or, if a position of partial 

 shade can be had, there will be no need of covering the 

 pots. The roots thus rested will flower more abundantly 

 and produce fewer leaves, and thus twice the number of 

 flowers may be obtained from the same space. The bulbs 

 are now being grown largely in California, where they are 

 dried like Tuberoses and purchased by florists in the East- 

 ern States. Thus dried, far more flowers are produced 

 than when the bulb is kept growing. 

 It is not well to give the Calla too much pot room, else 



