cxn. LABIATES. (J. D. Hooker.) 605 



or 0, radicle inferior. Species about 2600, chiefly of north temperate 

 regions. 



Tribe 1. Ocimoideae. Perfect stamens 4, rarely 2, declinate ; anther- 

 cells confluent. Ovary 4-partite. Nutlets dry, basal scar small. 



S ub tribe 1. EUOCIME^E. Upper calyx-lobe usually broadest. Corolla with 

 4 of the lobes equal or the 2 upper connate, the lower (lip) dissimilar. 

 Stamens usually exserted. 



* Lower lip of corolla fiat or nearly so. 



Fruiting calyx deflexed, upper tooth very large, decur- 



rent, stigma 2-fid , 1. OcntTTM. 



Fruiting calyx suberect or declinate, tube deeply pitted 2. GENIOSPORTJM. 



Fruiting calyx declinate, 2-lipped, upper filaments 



toothed 3. MKSOX 1. 



Fruiting calyx declinate, 2-lipped ', filaments simple, 



included 4. PLATTSTOMA. 



Fruiting calyx suberect, 4 lower teeth cuneate ; fila- 

 ments simple, included 5. ACEOCEPHALUS. 



Fruiting calyx usually declinate, equally 5-toothed, or 



upper tooth broader ; filaments included 6. MOSCHOSMA. 



Fruiting calyx deflexed ; corolla-tube often long ; stigma 



entire 7. OETHOSIPHON. 



** Lower lip of corolla concave or boat-shaped. 



Calyx equally 5-toothed or 2-lipped ; filaments free . . 8. PLECTEANTHUS. 



Stamens 4 ; filaments connate below 9. COLETTS. 



Calyx-mouth oblique, upper lip usually decurved ; fila- 

 ments free 10. ANISOCHILTIS. 



Corolla-lip deflexed, contracted at the base .... 10*. HTPTIS. 



Subtribe 2. LAVANDULEJS. Corolla 2-lipped ; upper lip 2-fid, lower 3-fid. 

 Stamens included. Nutlets with an oblique basal scar. 



11. LAVANDTTLA. 



Tribe 2. Satureineae. Perfect stamens 4 with the upper pair longest, 

 or 2, straight diverging or ascending ; anthers (1- or) 2-celled, cells short. 

 Corolla-lobes flat. 



Subtribe 1. POGOSTEMONE.E. Stamens 4; filaments straight; anthers 

 1 -celled. 



Calyx 5-toothed ; corolla 4-fid, lip spreading .... 12. POGOSTEMON. 

 Calyx 5-toothed*; corolla subequally 4-tid; stamens 



exserted 13. DYSOPHYLLA. . 



Calyx 5-partite, segments plumose ; stamens included . 14. COLEBEOOKIA. 



Subtribe 2. MENTHOIDE^. Stamens 4 or 2, distant, erect or spreading ; 

 anthers 2-celled (at least when young). 



* Whorls many-fid., spiked or racemed, not axillary. 



Fruiting calyx erect, elongate ; stamens 4 15. ELSHOLTZIA. 



Fruiting calyx declinate, 2-lipped ; stamens 4 . ... 16. PJEKILLA. 

 Stamens 2 17. MOSLA. 



** Whorls many-Jld., axillary, rarely spicate ; calyx ~LQ-1.3-nerved . 



Calyx 10-nerved ; stamens 4, anther-cells parallel . . 18. MENTHA. 

 Calyx 4-5-toothed stamens 2 ; nutlets truncate . . 19. LYCOPUS. 



