320 LABIATE. [CALAMINTHA. 



lower larger. Nutlets smooth. DISTRIB. Temp. N. hemisphere ; species 

 about 40. ETYM. Ka\6s and pivQa, beautiful mint. n 



SUB-GEN. 1. Calamin'tlia proper. Whorls many, compound, lax, 

 lower many-fld. ; bracts minute. Calyx-tube straight. Corolla with 

 mid-lobe of lower lip notched. 



1. C. officina'lis, Mwnch; perennial, leaves ovate, cymes secund. 

 Calamint. 



Waste places in dry soil from Westmoreland southd.; Ireland; Channel 

 Islands ; fl. July-Sapt. Hairy. Rootstock more or less creeping, stoloni- 

 ferous. Stem 1-3 ft., erect or decumbent below ; branches usually long, 

 straggling and ascending. Leaves crenate-toothed, very variable in size and 

 depth of serratures but pretty uniform in shape, almost glabrous or downy 

 or nearly woolly. Cymes more or less unilateral, peduncles and pedicels 

 variable. DISTRIB. From Belgium southd., N. Africa, W. Asia; introd. 

 in N. America. 



C. OFFICINA'LIS proper ; branches long ascending, leaves 1-1| in. crenate-serrate 

 green beneath, cymes few-fld., calyx bent on the pedicel 2-lipped, teeth 

 with long bristles, upper triangular, lower subulate much longer, hairs of 

 throat included, corolla in., mid-lobe of lower lip longest. C. menthafo'lia, 

 Host. Yar. Brigy'sii, Syme ; larger, more hispid, peduncles of lower whorls 

 equalling or exceeding the pedicel of the central flower. Devonshire. 



Sub-sp. C. NEP'ETA, Clairv. ; branches short erect, leaves usually f-1 in., 

 subentire pale beneath, cymes about 10-fld., calyx erect on the pedicel, 

 teeth nearly equal, upper triangular recurved, lower subulate, hairs of 

 throat prominent, corolla in., mid-lobe of lower lip broad truncate. 

 York to Kent. 



Snb-sp. 0. SYLVAT'ICA, Bromf. ; branches or long ascending, leaves 1-3 in., 

 deeply crenate-serrate, cymes loose, flowers large, calyx bent on the pedicel 

 2-lipped ciliate, 3 upper teeth abruptly recurved, 2 lower twice as long 

 incurved, hairs of throat concealed in the tube, corolla f-1 in., mid-lobe of 

 lower lip about equalling the 'lateral. Chalk banks, I. of Wight, Hants, 

 Devon. This is the true C. officina'lis, Mosnch, according to Nyman. 



SUB-GEN. 2. Clinopo'dium, L. (gen.). Whorls few, compound, 

 dense-fld., surrounded by many linear bracteoles. Calyx-tube slightly 

 curved. Corolla with mid-lobe of lower lip notched. 



2. C. Clinopo'dium, Benth. ; perennial, softly hairy, leaves ovate 

 obscurely toothed. Clinopo'dium vulga're, L. Wild Basil. 



Copses and rocky places, Banff and Eenfrew, southd. ; rare in Scotland and 

 Ireland ; ascends to 1,050 ft. in Derby ; fl. July-Sept. Rootstock woody, 

 stoloniferous. Stem 1-3 ft., slender, flexuous, subsimple. Leaves remote, 1-2 

 in., subacute. Whorls terminal and axillary, f-1 in. diam., depressed ; bracts 

 equalling the calyx 1 ; pedicels slender ; flowers crowded. Calyx - in., striate, 

 bristly. Corolla f-1 in., purple, hairy ; lips subequal. DISTRIB. Europe, 

 N. Africa, N. and W. Asia, Himalaya, Canada; introd. in the U. States. 



SUB-GEN. 3. A'cinos, Mcench (gen.). Whorls many, simple, lower 

 5-6-fld. ; bracteoles few, minute. Calyx-tube curved. Corolla with the 

 mid-lobe of the lower lip almost entire. 



