270 THE FLORA. 



g Cor. tube straight. Lvs. small, Bubcrenate or entire. CaUminth. CALAMIN'THA. 4 

 g Corolla tube curved upwards. Leaves large, coarse-crenate. Balm. MELIS'SA. 



h Anthers halved, the halves widely separated, each 1-celled. Sage, SAI/VIA. 5 



U Anthers halved, one half present, 1 celled. Filaments toothed. Shrub. \ 



Rottmary. KOSMARI'NUS. 



h Anthers wliole, 2-celled. Calyx subsequnlly 5-toothed. 



Mountain Mint. MONAR'DA. 



h Anthers whole, 2-celled. Calyx labiate, teeth bristle-shaped. BLEPHIL'IA. ' 

 k I/eaves serrate. Stamens diverging. Fls. spiked. Tall Hyssop. LOPHAN'THUS. 

 "k Lvs. serrate. Stain, all ascend. Fls. capitate. Dragonhead. DKACOCEPH'ALUM. 

 k Lvs. crenate, cordate or reniform. Corolla smooth inside. Catmint. NEP'ETA. ? 

 k Leaves crenate, cordate. Corolla tube very broad, hairy inside. CEDROXEL'LA. 



m Calyx lips toothed. Filam. forked. Fls. spiked. Self-heal. BRUNEI/LA. 8 



m Calyx lips entire, the upper appendaged on back. Skullcap. SCUTELLA'RIA. 9 

 n Calyx 3-lobed. Anthers all distinct. Corolla large, purplish. S. MACBRI'DEA. 

 n Calyx 4-lobed. Anthers, upper pair, connate. White. W. SYNAN'DRA.K) 



o Cor. tube inflated in the midst, whitish. Tall. Lion's- heart. PHYSOSTE'GIA.H 



o Cor. tube inflated at the throat, purple. Lvs. roundish. Henlrit. LAM'IUV. 



o Corolla inflated in the broad concave upper lip. Jerusalem Sage. PIILOMIS. 



o Corolla not inflated, short. . . .p 



p Calyx salver-form, 10-veined. Bluck Hoarhound. BALLO'TA. 



p Calyx broad-campanulate, netted. Molucca Jialm. MOLLUCCEL'LA. 



q Lvs. serrate. Anth. open crosswise. Nuts truncate. Hemp NMle, GALEOP'SIS. 



q Leaves serrate. Anth. open lengthwise. Nuts obtuse. Hedge Nettle. STACHYS. 



Leaves lobed. Nuts truncate at top, 3-angled. Motherwort. LEONU'RUS. 



o Cor. white, upper lip flattish. Style equally bifid, lliarhound. MARKU'BIUM. 



B Corolla white, upper lip concave. Style unequally bitid. S. LEUOAS. 



Corolla scarlet, exserted. Calyx upper tooth longest. Lion's-ears. LEONO'TIS. 



1. MEN'THA. Mint 



Calyx equally 5-toothed. Corolla nearly regular, tube included in the 

 calyx, border 6-cleft, the upper lobe mostly notched. Stamens 4, equal, 

 straight, erect, distant. Aromatic herbs, with the pale purple or white 

 flowers in close axillary clusters, or forming spikes. 



* Whorls of flowers remote, axillary, not in spikes. Leaves petiolate....!, 2 



* Whorls of flowers approximate, forming terminal spikes 3, 4 



1 M. Canaden'sis. Wild Mint. Plant grayish, fragrant. Lvs. acute at each end. 



2 M. arven'sis. Fuid M. Plant green, ill-scented. Lvs. frequently obtuse at base. 



3 M. piperi'ta. Peppermint. Leaves petiolate, ovate, serrate, smooth. Spikcn 



few, thick, short. Stems 2-3f. high. 



4 M. vir'idis. Spearmint. Leaves sessile, lance-oblong, acute, serrate. Spike* 



many, slender, lomr. Stems l-2f. high. 



