58. LABIATE. 265 



[Acati'thus mol'lii, belonging to the Order Acanthacete, has 

 been introduced by unknown agency into the Isle of St Agnes, 

 Scilly. See A. JV. H. ser. 2. vui. 505.] 



Order LYIII. LABIATE. 



Cal. tubular, regular or 2-lipped, persistent. Cor. 2-lipped, 

 upper lip entire or bifid, lower 3-fid, or nearly regular. Stam. 

 4, didynamous, rarely 2. Ovary free, 4-lobed. Style 1, from 

 the base of and between the lobes ; stigma bifid. Fr. in 1 — 4 

 small nutlike parts (not true nuts although so called beloTf). — 

 H. unsymmetrical, often forming 2 cymes so placed as to resem- 

 ble a whorl (a verticiUaster). L. opposite. — No stipules. 



Tribe I. MENTHOIDEJE. Cor. bellshaped, nearly regular. 

 Stam. distant, straight, diverging upwards. 



1. Mentha. Cor. 4-fid, tube very short. Cal. regular, 5- 

 toothed. Stam. 4:; anth. -cells parallel. 



2. Ltcopus. Cor. 4-fid, scarcely longer than the regular 

 5-toothed calyx. Stam. 2 ; anth.-cells parallel or ulti- 

 mately diverging ; 2 upper stam. imperfect. 



Tr. n. MONARDEJE. Cor. 2-lipped. Stain. 2, perfect, par- 

 allel under the upper lip of the corolla. 



3. Salvia. Filaments with 2 diverging branclwa ; only one 

 bearing a perfect anth.-cell. Cor. ringent. Cal. tubular, 

 2-lipped. 



I-^.TH. SATUREINEJE. Cor. 2-Hpped. Stam. 4, distant ; 

 cells of anth. separate, diverging ; connective dilated. 



4. Om&ANiTM. Stam. diverging; connective subtriangular. 

 Upper lip of cor. straight, nearly flat ; lower patent, 3-fid. 

 Cal. with. 5 equal teeth and 10 — 13 veins ; throat hairy. 

 Spikes 'k-sided, resembling catkins with imbricate bracts. 



5. Thymus. Tips of stam. patent. Anth.-cells at first nearly 

 parallel, afterwards diverging ; connective subtriangular. 

 Upper lip of cor. straight, nearly flat ; lower patent, 3-fid. 

 Cat. %-lipped and 10 — 13- veined ; throat hairy. Fl. whorled, 

 axUlary or spiked. 



0. Calamintha. Tips of stam. converging under the upper 

 lip of the corolla. Anth.-cells at length diverging ; con- 

 nective subtriangular. Upper lip of cor. straight, nearly flat ; 

 lower patent, 3-tid. Cal. 2-lipped, 



