14 



CENTRAL EXPERIMENTAL FARM 



are many improved varieties. Because they hybridize so readily, however, it is very 

 difficult to get species true to name, seed from botanic gardens, even, being often 

 impure. Some of the best species must be treated as biennials to get good results, 

 A. glandulosa and A. Stuarti especially requiring this treatment, but as columbines 

 grow readily from seed it is easy to propagate them. The long spurred varieties of 

 columbine are very desirable, and may be obtained in many colours by growing seed- 

 lings. These varieties have come for the most part from hybrids between A. coerulea 

 and other species. 



A. alpina, L. Europe, &c. 

 PL, 1896. Tender. 



*A. arctica, HORT. 



PL, 1905. Hardy. Ht. 3 ft. Fl. 



deep purple ; June 5 to July 3. 

 A. atropurpurea, Miq.=A. buergeriana. 

 A. aurea, Janka. = 0. chrysantha. 



A. buergeriana, SIEB. & Zucc. Japan. 

 Syn. A. atropurpurea, Miq. 

 PL, 1901. Hardy. Fl. purple and 

 white; June 3 to July 1. 



***A. cserulea, JAMES. North-western 



America. 



PL, 1896. Hardy. Ht. 1 to 1 ft. 

 Fl. violet and white; May 25 to 

 June. 



A. calif ornica hybrida. 



PL, 1896. Tender. 



A. californica hybrida alba, 



PL, 1896. Tender. 



**A. canadensis, L. Common Wild Co- 

 lumbine. North America. 

 PL, 1895. Hardy. Ht. 1 to 2 ft. 

 Fl. scarlet and yellow; May to 

 June. 



A. canadensis nana. 

 PL, 1896. Tender. 



A. caryophylloides, HORT. 



PL, 1907. 

 A. caucasia, Ledeb. = A. olympica. 



***A. chrysantha, GRAY. New Mexico. 

 Syn. A. aurea, Janka. 

 PL, 1901. Hardy. Ht. 2* to 3 ft. 

 FL yellow ; June 18 to July 21. 



**A. chrysantha flore pleno. 



PL, 1901. Hardy. Ht. 2J to 3 ft, 

 FL yellow, semi-double; June 7 

 to July 12. 



A. chrysantha grandiflora alba. 

 PL, 1896. 



**A, chrysantha nana. 



PL, 1901. Hardy. Ht. 2 ft. FL 

 golden yellow; June 16 to July 

 16. 



A. dichroa, FREYN. Europe. 



PL, 1901. Hardy. FL dark purple 

 and white; June 2 to July 7. 



*A. einseliana thalictrifolia. 



PL, 1901. Hardy. Ht. 1* ft. Fl. 

 bluish purple ; June 10 to July 11. 



*A. flabellata, SIEB. & Zucc. Japan. 

 PL, 1901. Hardy. Ht. 12 to 15 in. 

 FL white tinged with violet rose; 

 May 18 to June 18. 



***A. flabellata nana alba. 



PL, 1901. Hardy. Ht. 12 to 15 in. 

 FL white. with traces of lavender; 

 May 19 to June 21. 



*A. flavescens rhodosepala. 



PL, 1901. Hardy. Ht. 2 ft. FL 

 white and yellow tinged with lilac 

 on outside; June 7 to July 4. 



*A. f ormosa, FISCH. Western North 



America. 



PL, 1903. Hardy. Ht. 2 ft. FL 

 red with yellow centre; June 3 

 to July 17. 



A. fragrans, BENTH. Himalayan re- 

 gions. 

 PL, 1907. 



***A. glandulosa, FISCH. Siberia. 



Syn. A. jucunda, Fisch. & Lallem. 



PL, 1901. Hardy. Ht. 12 to 15 in. 

 Fl. sepals bluish lavender, petals 

 white; May 15 to June 1. A 

 form of this grows 4 ft. high and 

 has bloomed from May 28 to 

 July 17. 



A. glandulosa longicalcarata. 



PL, 1901. Hardy. Ht. 2} ft. Fl. 

 bluish purple; June 5 to July 9. 



