THE BABY CACTUS 51 



The flowers are about the length of a walnut and have lemon- 

 yellow petals and brown sepals. The fruit is quite small 

 and is light yellow-green. This species differs from the 

 others of the group in that the flowers are borne in a circle 

 two or three inches in diameter about the center of the plant. 



How to grow 



These plants will endure twenty degrees of frost without 

 injury; where the winters are colder than this the plants 

 should be covered or grown indoors, preferably under glass. 

 They may be grown from seed in sandy soil or sandy loam 

 In pots with partial shade and with enough watering to keep 

 the soil moist. Field plants may be transplanted at almost 

 any season in gravelly or clay loam soils and given enough 

 water to moisten the soil during dry spells. 



Devil's Pincushion; Pineapple Cactus 



(Coryphantha robustispina) 



How to identify and how it grows 



The Pineapple Cactus is the largest of the Pincushion 

 cacti, with its large tubercles and coarse spines. It grows 

 as high as nine inches, and six Inches in diameter, single or 

 several stems In clumps. They form in hemispherical 

 mounds as wide as eighteen Inches, with the larger stems 

 suggesting a pineapple. The spines are straight and stout 

 and slightly curved, and grow In groups of eleven to fif- 

 teen, one of which, a central. Is a little longer than the rest; 

 erect, and of a dull straw color fading to yellow-tan. The 

 bases of the spines are bulbous. The flowers, about two 

 inches long, are yellow or straw-colored or yellow-brown 

 and are very showy, remaining open all day. The fruit is 

 large, about two inches, and narrow or oblong and of a 

 yellow-green with large light brown seeds. 



