274 58. LABIATE. 



** Stamens falling short of the ttibe of the corolla. 



16. Maebubium. Anther-cells diverging, bursting longitu- 

 dinally. Upper lip. of cor. straight, erect, flattisn, cloven ; 

 lower 3-lobed, middle lobe the largest. Cal. tubular, teeth 

 nearly ec[ual or 2 longer. Nutlets flatly truncate. 



Tr. VII. AJUQOIBEM. Cor. with the u^per lip very short, 

 or deeply bifid and appearing as if wanting. 



17. Tbuobium. Stam. parallel, protruded between the lobes 

 of the upper lip of the cor., inferior longest ; cells bursting 

 longitudinally. Car. with the upper lip deeply hifld, lobes 

 long ; lower lip 3-lobed. Oal. tubular, 5-toothed ; the 

 teeth equal or the upper one larger (2-lipp6d). 



18. AjTJGA. Stam. parallel, protruded far beyond the upper 

 lip of the cor., inferior longest; cells' bursting longitudinally. 

 Coi: with the upper lip very short, 2-lobed; lower 3-lobed, 

 much longer than the upper. Oal. ovate-bellshaped, nearly 

 equally 5-cleft. 



Tribe I. Menthoidem. 



1. Men'tha Linn. Mint.^ 



* Throat of the calyx naked. Qentral inflorescence determinate. 

 Whorls offl. in terminal spikes or clusteis. — f Stoles aerial, 

 leafy. 



tl. M. vir'idis (L.) ; I. glabrous, seesile lanceolate acute 

 serrate, spikes lax cylindrical, bracts subulate, cor. glabrous. — 

 JB. B. 2424. Sole Menth 5. "Whorls of the spike rather distant. 

 L. glandular beneath. — ^. a-ispa (Benth.); 1. deeply cut and 

 crisped. — In marshy places, rare. j3. Glen Farg, Perthshire. 

 JSooker. P. Vin. Spear-Mint. E. S. 



2. M. rotundifdlia (L.) ; I. sessile TonnSlj OYide crenate-serraie 

 wrinkled shaggy beneath, spikes linear cylindrical dense, bracts 

 lanceolate, "fr.-cal. not 'contracted at the mouth," cor. hairy. — 

 U. B. 446. Sole 8.— Viscid. St. 1—2 ft. high. L. usuaUy 

 with a cordate base. Whorls of spike nearly all close together. 

 Scent acrid. — Waste places, rare. P. VIII. IX. Sound-leaved 

 Mint. E. S. I. 



'■ See Mr. Baker's valuable paper in J. of£. iii. 233. 



