Hardy Exotic Plants for Naturalization. 93 



THE BORAGE FAMILY. 



Prostrate Gromwell. Lithospermum prostratum. 

 Southern Europe. Evergreen trailer ; 6 to 1 2 inches ; 

 blue ; summer ; cuttings. — Rocky or bare places, margins 

 of copses, banks, &c. ; flourishes best in deep, well- 

 drained, sandy loam. 



Boiigh Comfrey. Symphytum asperrimum. Cau- 

 casus. Herbaceous perennial; 4 to 6 feet; blue; 

 summer ; seed or division. — In woods and rough 

 shrubberies. A grand plant for naturahzation. 



Bohemian Comfrey. Symphytum bohemicum. Bo- 

 hemia. Herbaceous perennial ; 3 feet ; red ; early 

 summer; division. — Copses, margins of plantations, by 

 wood walks, &c. in ordinary soil. 



Oriental Comfrey. Symphytum orientale. Tauria. 

 Herbaceous perennial ; 2 to 3 feet ; white ; early summer ; 

 seed or division. — Similar positions to those for the Bo- 

 hemian Comfrey. 



Caucasian Comfrey. Symphytum caucasicum. Cau- 

 casus. Herbaceous perennial ; 3 to 4 feet ; blue ; sum- 

 mer ; division. — In shrubberies, copses, fringes of woods, 

 &c., also in more open positions amongst medium-sized 

 herbs. A lovely plant for naturalization, and thriving 

 freely in any soil. 



Italian Bugloss. Anchusa italica. Southern Europe. 

 Herbaceous perennial; 2 to 3 feet; blue; summer; 

 seed or division.— Fringes of woods, copses, &c., or 

 among the stronger herbaceous plants. 



Azorean Porget-me-not. Myosotis azorica. Azores. 



