180 PLANTS OF MASSACHUSETTS. 



G. ladanum. L. Red Hemp Nettle. A smaller plant with 

 a hairy stem, and far more rare. Indeed it is credited only to 

 Chelsea Beach by Dr. Bigelow. 



Stachys. L. 13. 1. 



From the Greek for a spike, as the flowers are sessile along the 

 stem, and in all the species the inflorescence is in spikes ; near 

 40 species, mostly in Europe and the North part of Asia ; about 

 35 have been cultivated in England ; 4 or 5 are found in the 

 United States, and 3 in this State. 



S. aspera. Mx. Hedge Nettle. About a foot high, erect, 

 with the angles hairy backwards, and lanceolate leaves, sharp- 

 serrate ; teeth of calyx spreading and spiny ; fields ; July ; pur- 

 ple flowers in whorls so as to be spike-form. 



S. hyssopifolia. Mx. A small plant half a foot or more high, 

 with linear leaves and a hairy purple corolla ; meadows ; July ; 

 near New Bedford. 



S. sylvatica. L. Has probably been introduced from Europe. 



Thymus. L. 13. 1. 



T. vulgaris. L. Thyme. Cultivated in gardens, and natural- 

 ized in a few places. Named from the Greek for courage, as its 

 aromatic odor is reviving. The plant yields considerable cam- 

 phor ; formerly used in cookery ; its extract is penetrating and 

 strong. 



Trichostema. L. 13. 1. 

 From the Greek for hair and stamen, as its stamens are slender 

 and hair-like ; a genus of 3 species in North America, and 1 in 

 Asia. 



T. dichotoma. L. Blue Curls. A rather handsome plant 

 with numerous terminal flowers, and long, arching stamens ; pas- 

 tures and hills of light soil ; June. 



