318 LABIATE. (MINT FAMILY.) 



31. L.AMIUUI, L. DEAD-NETTLE. 



Calyx tubular-bcll-shapcd, about 5-nerved, with 5 nearly equal awl-pointed 

 toctli. Corolla dilated at the throat; the upper lip ovate or oblong, arched, 

 narrowed at the base ; the middle lobe of the spreading lower lip broad, notched 

 at the apex, contracted as if stalked at the base ; the lateral ones small, at the 

 margin of the throat. Stamens 4, ascending under the upper lip : anthers ap- 

 proximate in pairs, 2-celled, the cells divergent. Nutlets truncate at the apex. 

 Herbs, decumbent at the base, the lowest leaves small and long-petioled, the 

 middle ones heart-shaped and doubly toothed, the floral similar but nearly ses- 

 sile, subtending the axillary whorled clusters of flowers. (Name from Xat/zos, 

 the tin-oat, in allusion to the ringent corolla.) 



1. L. AMPLEXICAULE, L. Leaves rounded, deeply crenate-toothed or cut, 

 the upper ones clasping ; corolla (purple) elongated, upper lip bearded, the lower 

 spotted; lateral lobes truncate, (i; Cultivated grounds. (Adv. from Eu.) 



2. L. PURPUREUM, L. Leaves roundish or oblong, heart-shaped, crenate- 

 toothed, all petioled. Cult, grounds, Pennsylvania. (Adv. from Eu.) 



32. BAL.L.OTA, L. FETID HOREHOUND. 



Calyx nearly funnel-form, the 10-ribbcd tube expanded above into a spreading 

 regular border, with 5-10 teeth. Anthers exserted beyond the tube of the co- 

 rolla, approximate in pairs. Otherwise much as in Marrubium. (The Greek 

 name, of uncertain origin.) 



1. B. NIGRA, L. (BLACK HOREHOUND.) More or less hairy, but green, 

 erect ; leaves ovate, toothed ; whorls many-flowered, dense ; calyx-teeth 5, long- 

 er than the tube of the purplish corolla. 1J. Waste places, Massachusetts 

 and Connecticut: scarce. (Adv. from Eu.) 



33. PHI, 6 MIS, L. JERUSALEM SAGE. 



Calyx tubular, 5- 10-ribbed, truncate or equally 5-toothcd. Upper lip of the 

 corolla arched ; the lower spreading, 3-cleft. Stamens 4, ascending and approx- 

 imate in pairs under the upper lip ; the filaments of the upper pair with an awl- 

 shaped appendage at the base, longer than the others in P. tuberosa, &c. : anther- 

 cells divergent and confluent. Leaves rugose. Whorls dense and many-flow- 

 ered, axillary, remote, bracted. (An old Greek name of a woolly species, 

 of obscure derivation.) 



1. P. TUBER6SA, L. Tall (3 -5 high), nearly smooth; leaves ovate- 

 heart-sliaped, crenate, petioled ; the floral oblong-lanceolate ; bracts awl-shaped, 

 hairy; upper lip of the purple corolla densely bearded witli white hairs on the 

 inside. U Shore of Lake Ontario near Rochester, Prof. Hadley, Prof. Dewey. 

 (Adv. from Eu.) 



The familiar cultivated plants of this family, not mentioned above, are the 

 SWEET BASIL (fret/mum Basilicum) ; the LAVENDER (Lavdndula vera); and 

 the SwEEr MARJORAM (Origanum Majorana). 



