364 L abiatcs Rosmarin us. 



4. ROSMARINUS. 



A genus of one South European species, a familiar shrub in 

 gardens. It is technically distinguished by its coloured bila- 

 biate calyx and corolla with two exserted stamens having a 

 reversed tooth on each filament. The name is a compound of 

 TOS-) dew, and marinus, sea. 



1. R. officinalis. Eosemary. A dense branching shrub with 

 linear sessile leaves, the edges recurved. Flowers pale blue 

 or white. There are several varieties distinguished by name : 

 as R. off. latifolius, R. off. foliis aureis, and R. off. foliis 

 argenteis. 



The genus Thijmus offers little in the ornamental vay, but 

 most of the species are agreeably fragrant, and will thrive in 

 dry rocky places ; some of the variegated varieties, as T. citri- 

 odorus variegatus, of nurserymen, are very neat. 



5. MONlRDA. 



A small genus of erect herbs with simple toothed leaves and 

 showy flowers in close heads of whorls surrounded with bracts. 

 Calyx tubular, elongated, nearly equally 5-toothed. Corolla long 

 and slender, deeply bilabiate ; lips narrow, nearly equal and 

 slightly toothed. Stamens 2, ascending, the spreading anther- 

 cells confluent at the junction. 

 The species are all from North 

 America. Dedicated to Monardez, 

 a Spanish botanist. 



1. M. didyma (fig. 199). Os- 

 wego Tea or Bee Balm. A 

 slightly hairy perennial about 2 

 feet high with showy scarlet or 

 bright red flowers and bracts. 

 This flowers in Summer, and is 

 by far the showiest in cultiva- 

 tion. The detached corolla in 

 the cut 'is about one-quarter of 

 the natural size. 



Fig. 199. Monarda didyma. (J nat. size.) ,.- . ,^ TTTM i T 



M. fistulosa, Wild Bergamot, 



has narrower leaves and smaller purple, pink or white flowers. 



Prunella grandifldra is very near our native Self-heal, P. 



vulgaris, but the flowers are much larger. There are purple, 



violet, and white varieties. This genus is distinguished by its 



