230 



LABIATE. 



discrete or confluent cells dehiscing longitudinally. Disk prominent. 

 Ovary superior, of two 2-celled carpels ; style simple, inserted 

 between the lobes stigma usually 2-fid., sometimes unequally ; ovules 

 1 in each lobe, erect, anatropous. Fruit of 4 dry or rarely fleshy 

 1-seeded nutlets at the base of the calyx, sometimes 1 or more sup- 

 pressed. Seeds small, albumen scanty or none.— Species about 3,000, 

 chiefly in warm diy temperate regions. 



Ovary 4-partite ; areola of nutlets small, basilar or placed somewhat 

 obliquely to the outer side : — 



Stamens 4, all perfect and 

 confluent : — 



Attachment of nutlets basilar :— 



Lower lip of corolla declinate, flat or slightly concave, generally 

 narrower, but hardly longer than the 3-4-lobed upper lip: — 



Calyx deflexed in fruit ; upper lobe widest, large, ovate, re- 

 curved; the margins decurrent on the tube : — 



declinate, anther-cells at 



length 



Corolla-tube short, lower lip flat, 

 stiffma 2-fid .... 



Corolla-tube usually 



lip concave, stigma entire 



long, 



lower 



1. OciMU&r. 



2. Oethosiphon. 



Calyx suberect or declinate in fruit, 

 upper lobe broader than the others, 

 margins not decurrent on the 

 tube :— 



Whorls crowded in terminal and 

 axillary globose or ovoid heads 

 with imbricate bracts, calyx sub- 

 erectj * . • • • 



Whorls forming long terminal spi- 

 cate recemes ; bracts white, con- 

 spicuous, calyx usually declinate 



Lower lip of corolla deflexed, concave 

 or boat-shaped, much longer than 

 the upper lip : = 



Calyx equally 5-toothed or somewhat 

 2-lipped, with a 3-toothed upper 

 and a 2-toothed lower lip, or with 

 the upper lobe large rounded and 

 reflexed, the others narrow and 

 subulate ..... 



3. ACROCEPHALUS. 



4. Geniosporum. 



5. Plectranthus. 



