rere ogee 
O- Calyx 2-lipped, the lips rounded, entire, the upper bearing ~ 
4 an erect protuberance which increases in fruit j Scutellaria 
Oo Calyx equally 5-lobed or 2-lipped but the lips not 
4 entire, not bearing a protuberance 
7) Flowers solitary in the axils 4 Saturejea 
2 Flowers in spikes or axillary elusters, not 
G solitary 
G Flowers in dense hemispherical heads; 
4 anther bearing stamens, 2 | 
/o corollas 3-4 cm. long j Monarda 
Flowers in small canpact axillary 
/o clusters; corollas 2-3 mm. long y lLycopus 
4 Anther bearing stamens 4 
& Calyx teeth 10-12, hooked at the apex & Marrubium 
(, Calyx teeth 5, sometimes spinose but not 
/O hooked 
% Leaves entire 
/O Flowers in dense hemispherical 
/4 heads ¢ Monardelle 
/O Flowers in axillary clusters or 
/A cylindrical spikes 
/2 Corolle strongly hooded, the 
upper lip enttre, containing 
nl te stamens; upper lip of 
calyx truncate 7. Prunella 
/Z Corolla 5=lobed, the stamens 
exserted between the upper 
/6{ lobes; upper lip of calyx 
ot truncate g Trichostemgls 
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