No. 438.] NORTHERN GA MOPE TA LOUS FLOWERS. 367 



with the leaves reduced to bracts. The plants which live in rich 

 woods are white or colored with anthocyan. Monotropa uniflora 

 (Indian pipe or ghost-flower) is usually pure white, and stands 

 out in strong contrast with the dark brown soil of its woodland 

 home. Occasionally the whole plant is ] k ed Specimens 

 in drying turn black. M. typopitys has the entire plant pale 

 yellow, with yellowish or pink flowers. On the island of Wollin 

 Knuth saw a bumblebee sucking the flowers. The plant of 

 Monotropsis is pale pinkish brown with fragrant pink flowers. 



and often display bright masses of color, which are visible at a 

 long distance. This family reaches its highest development in 



enabling them to endure the severities of alpine summits. The 

 heaths proper are most abundant at the Cape of Good Hope, 

 where more than 400 species have been described. Of the 38 

 northern species 22 are white, 1 yellow, 10 red, and 5 purple. 



Some of the handsomest of the wild flowers belong to the 

 genus Azalea. Of the five northern species two are white, one 



by bumblebees. Rhododauhvn maximum and Kalmiajatifolia 

 have been called the two handsomest North American shrubs. 

 Bigelow remarks in his Medical Botany that " these shrubs, in 



