28 DIDYNAMIA. GYMNOSPER.vnA. 



and lower verticilli shortly pedicellate; calix permanently 

 blue and finely striated, tnbular-carapanulate; flowers 

 pale blue; stylo and stamina exserted. 



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

 China, and probably "Z in Europe. 



599. NEPETA. L. (Cat-Mint.) 



Calix arid, striated. Tube of the Corolla 

 longish; inteimediate segment of the lower lip 

 crenate; margin of the orifice reflected. Sta- 

 mina approximate. 



Flowers verticillately spiked, rapely racemose or cy- 

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

 duncles many-flowered. 



Species. 1. "S. Catai^ia. Abundantly naturalized. 



A geinis of more than 30 species dispersed through the 

 south of Europe, and extending into Barbary in Africa, 

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

 ] species in Japan and 3 in India. 



400. LAMIUM. (Dead Nettle. Archangel.) 

 Calix 5-cleft, segments subulate, spreading. 



Upper lip of the Corolla entire and vaulted: low- 

 er lip 2-I()bed; the margin of the orifice toothed 

 on either side. 



Floral leaves mostly sessile; flowers axillary, sessile; 

 subverticillate, bractes setaceous; corolla mostly pubes- 

 Celt, lobes of the corolla in a few species s'^rrulate. 



Species. \.\^. amplexicmde. Naturalized; introduced. 

 2. hispidulum. — A small genus principally European. 



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



Calix 5-cleft, aw ned. Upper lip of the Corol- 

 la subcrenate, vaulted; lower lip 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 verticillate, axillary, 

 sometimes particoloured; bractes subulate; stem in some 

 species ttimid below the joints. 



Species. 1. G. Tetrahit. IT a b. In the western parts 

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



