Hardy Exotic Plants for Naturalization. 99 



Spotted Archangel. Lamium maculatum. Italy. 

 Herbaceous perennial ; i foot ; purple ; summer ;. divi- 

 sion. — Fringes of plantations, banks, and rocky places. 

 The white variety is very showy and good. 



Showy Physostegia. Fhysostegia speciosa. North 

 America. Herbaceous perennial ; 2 to 3 feet ; pink ; 

 summer ; seed or division. — Among the finer perennials 

 on the margins of shrubberies, in copses, or in groups 

 by wood walks. 



Imbricated Physostegia. Physostegia imhricata. 

 North America. Herbaceous perennial ; 4 to 6 feet ; 

 rose ; summer ; seed or division. — Similar positions to 

 preceding, but suited also for association with larger 

 plants. 



Virginian Physostegia. Physostegia virginiana. 

 North America. Herbaceous perennial; 2 to 3 feet; 

 red; summer; seed or division. — Similar positions to 

 those for P. speciosa. 



Woolly Woundwort. Stachys lanata. Siberia. 

 Herbaceous perennial ; i to 2 feet ; purple ; summer ; 

 division or seed. — Margins of shrubberies or on banks 

 in any kind of soil. 



Lavender-leaved Zietenia. Zietenia lavandulafolia. 

 Levant. Evergreen perennial ; i foot ; purple ; summer ; 

 division. — Similar positions to preceding; very free on 

 warm and sandy soils. 



Fisher's Dragon's Head. Dracocephalum argunense. 

 Siberia. Herbaceous perennial ; i foot ; blue ; summer ; 

 division or seed. — Rocky places and bare banks, in 

 sandy soil or free loam. 



H 2 



