274 Iberbaceous plants. 



beds and borders and especially in rockeries. The common 

 columbine (A. vulgaris) is a well known border plant with 

 many beautiful varieties, single or double, varying from pure 

 white to pale blue and purple. It is a very floriferous plant 

 with fine masses of foliage of biternate leaves. Height about 

 two feet. The golden columbine (A. clvrysantha) is an ex- 

 ceptionally fine border plant about as large as the preceding 

 kind but of a more elegant habit! Flowers are of a pale 

 yellow on the outside, brighter within. 



The following are all rock-plants growing in high moun- 

 tain regions or in rocky woods : Alpine columbine (A. al- 

 pina). A very fine plant about a foot high, with biternate 

 leaves and linear leaflets. Flowers are very large blue or 

 blue and white, borne on erect stems. Canadian columbine 

 (A. Canadensis). Flowers red and yellow, borne in loose 

 panicles on leafy stems, about eighteen inches high. Common 

 in the crevices of rocks on the borders of woods. Long- 

 spurred columbine (A. cceruled). Flowers large, extremely 

 beautiful, blue and white. Habit elegant. Leaves biter- 

 nate, comparatively small, not numerous. One of the best 

 rock-plants, a native of the Rocky Mountains. Glandular 

 columbine (A. glandulosa). A very beautiful species sel- 

 dom a foot high. Flowers large and showy with deep 

 blue or lilac sepals and pure white petals. Spurs very 

 much shorter than in the preceding kind. Siberian colum- 

 bine (A. Sibericd). A species nearly related to the former 

 but larger and of a denser habit with lilac or white and lilac 

 flowers. There is also a very handsome, pure white variety. 

 These are very fine in rockeries but may also be grown 

 sucessfully in borders if the soil is not too heavy. They are 



