MINT FAMILY 143 



(2) Corolla 12-20 mm. wide; leaves once pin- 



natifid V. canadensis 



2. Flowers 4-10 mm. long, 2-8 mm. wide, in spikes 



a. Bracts of spike longer than the flowers ; stems 



spreading V. bracteosa 



b. Bracts of spike small and inconspicuous ; stems 



erect 



(1) Corolla 3-4 mm. wide; plants smooth or 



sparsely hairy V. hastdta 



(2) Corolla 6-8 mm. wide; plants densely soft- 



hairy V. stricta 



LAMIACEAE MINT FAMILY 



Sepals 5 (rarely 4), united into a regular or 2-lipped calyx, petals 4-5, 

 united into a mostly 2-lipped but sometimes regular corolla, upper lip 2- 

 lobed or entire, lower lip 3-lobed, stamens 4 in pairs on the corolla-tube, 

 sometimes 2, ovary 4-lobed or parted, each lobe or division with 1 ovule, 

 style 2-cleft at the summit, fruit of 4 1-seeded nutlets; flowers variously 

 clustered ; aromatic herbs or shrubs ; mostly with 4-sided stems and simple 

 opposite leaves without stipules. 



1. Stamens 2 



a. Corolla nearly regular, 4-5 lobed, white ; leaves 



sharply toothed or cut LYCOPUS 



b. Corolla 2-lipped, mostly blue to rose or purple 



(1) Flowers blue, in terminal racemes or 



spikes; calyx 2-lipped or 3-lobed SALVIA 



(2) Flowers rose to purple, rarely white, in 



head-like or axillary clusters 



(a) Flowers 2-4 cm. long, in dense mostly 



terminal heads MONARDA 



(b) Flowers 5-12 mm. long, axillary, soli- 



tary or few in a cluster HEDEOMA 



2. Stamens 4 



a. Calyx 2-lipped 



(1) Calyx cap-shaped, lips entire SCUTELLARIA 



(2) Calyx lips toothed 



(a) Flower bracts large, round, purplish PRUNELLA 



(b) Flower bracts neither round nor purple 



x. Corolla apparently with one long lip TEUCRIUM 

 y. Corolla clearly 2-lipped CLINOPODIUM 



