210 LA HIATAL. 



voliitilo oil tliey may relievo oolie pniiiH, aH do the labiatm generally, but 

 tliat cither of them is directly uarcotio, sedative, or Bpecitic, in extremely 

 improbable. 



CUNILA.— Dittany. 



Cunila Mariana Linm'. — THllany. 



JJfscriidiun. — Calyx equally .l-toothed, the throat densely hairy. Co- 

 rolla twice as lon^jf as the calyx, 2-lipped ; the upp(!r lip erecrt, lint, einarj^i- 

 iiuto ; the lower U-clet't, spreading. .Stamens 2, erec-t, exserted, distant. 



A perennial herb. Stems iut'ted, 1 to 2 h'et hif^h, mucli branched, pur- 

 plish. Leaves ovate, serrate, subsessile. Flowers jiurplish, in corymbed 

 cymes or clusters, appearin<j in midsummer. 



Iltibilal. — In dry, o2)en woods, ivom Now York to Illinois and .southward. 



VarU Cxnt. — The herb — not oflicial. 



('oiislUaciUis. — A very fraj^'raut volatile oil, and ordinary coubtitueuta of 

 the labiatii'. 



rreparalioHX. — Commonly used in infusion. 



Medical rropcrlieti and t's(,'.«<.— Dittany acts, in every essential particular, 

 like the mints, and is used for the same puiposes. 



PYCNANTIIEMUM.— Mountain Mint. 



Character of the Geini.^. — Calyx tubular 10- to ■'.5-nei'ved, equally 5- 

 toothed or with the 3 upper teeth more ov less united. Corolla 2-lipi)ed ; 

 the upper lip nearly entire ; the lower tritid, the middle lobe longest, all 

 of them ovate, obtuse. Stamens 4, distant, the lower pair longer. 



Erect, rigid, perennial herbs, corymbosely branched above. Flowers' 

 luunerous, in dense whorls, usually forming terminal heads or close cymes. 



Pycnanthemum incanum Mic.hnnK.—Moinitain 3Ii)it. 



Dexcriptioit. — Calyx 2-lipped, the teeth, together with the bracts, awl- 

 shaped, and bearded Avith spreading hairs. 



Stem erect ^ +o 4 feet high. Leaves oblong-ovate, acute, remotely 

 toothed, dow" 3 and hoaiy-tomentose beneath, the floral ones whit- 



(>ned botl .'lowers pale red, dotted with purple, in dense, flattened, 



comijoi ^es, appearing in July and August. 



Ilabii.. —Rocky woods and barrens from New England to IVtichigau 

 and south ,vard. • 



Pycnanthemum linifolium Pursh. — Virginia Thyme. 



Description. — Calyx equally 5-toothed, the teeth pointed. Corolla veiy 

 short. 



Stem erect, 1 to 2 feet high. Leaves narrow, sessile, entire, rigid, 

 crowded and clustered in the axils. Flowers whitish, collected in dense, 

 globular, often fascicled heads, crowded in terminal cymes, appearing in 

 August. 



