£8 DIDYNAMIA. GYMNOSPERMIA. 



and lower verlicilli shortly pedicellate; calix permanently 

 blue and finely striated, tubular-campanulate; flowerg 

 pale blue; style and stamina exserted. 



Of this genus there are besides the above, 1 species in 

 China, and probably '■i in Europe. 



S99. NEPETA. X. (Cat-Mint.) 



Calix arid, striated. Tube of the CoroUa 

 longish; intermediate segment of the lower lip 

 crenate; margin of the orifice reflected. Sta- 

 mina approximate. 



Flowers verticillately spiked, rarely racemose or cy- 

 mose, spikes terminal, in a few species paniculatedi pe- 

 duncles many-flowered. 



Species. l.'S.CataHa. Abundantly naturalized. 



A g-enus of more than 50 species dispersed through the 

 south of Europe, and extending into Barbary in Africa, 

 in Asia into the Levant, Persia and Siberia, there is also 

 1 species in Japan and 3 in India. 



400. LAMIUM. (Dead IS'ettle. Archangel.) 

 Calix 5-cleft, segments subulate, spreading. 



Upper lip of the Corolla entire and vaulted: low- 

 er lip 2-lobed; the margin of the orifice toothed 

 on either side. 



Floral leaves mostly sessile; flowers axillary, sessile; 

 subverticillate, Lractes setaceous; corolla mostly pubes- 

 cent, lobes of the corolla in a few species serrulate. 



Species. 1. \a. amplexicaide. Kuturali zed; introduced. 

 2. hispidalum. — A small genus principally European. 



401. GALEOPSrS. L. (Hemp-Nettle.) 



Calix 5-cleft, awned. Upper lip of tlie Corol- 

 la subcrenate, vaulted; lower li{) unequally 3- 

 lobed, producing also 2 teeth on its upper side 

 near the margin of the orifice. 



Chiefly annual plants with entire ovate or lanceolate 

 leaves; calix often pungent, flowers verticlllate, axillary, 

 sometimes particoloured; bractes subulate; stem in some 

 species tumid below the joints. 



Species. 1. G. Tetrahit. Hab. In the western parts 

 of the state of New York. Obs. Annual; hirsute; stem 



