LABIATiE. (mint FAMILY.) 305 



whitened ; the many-flowered whorls dense, crowded with bracts, and usually 

 forming terminal heads or close cymes. Corolla whitish or purplish, the lips 

 mostly dotted with purple. Varies, like the Mints, with the stamens exserted 

 or included in different flowers. (Name composed of irvKvos, dense, and auBf/wi', 

 a blossom ; from the inflorescence.) 



# Calyx scarcely at all 2-Kpped, the teeth and bracts awl-shaped and avm-pointed, 

 rigid, naked, as long as the corolla ; flowers in rather dense mostly terminal heads : 

 leaves rigid, slightly petioled. 



1. V. aristatum, Michx. Minutely hoary-puberulent (l°-20,high) ; 

 Ifcaves ovate-oblong and oblong-lanceolate, acute, sparingly denticulato-serrato 

 (l'-2' long), roundish at the base. — Pine barrens, from Now Jersey southward. 



Var. iiyssopifdlium. Leaves narrowly oblong or broadly linear, nearly 

 entire and obtuse. (P. hyssopifolium, Benth.) — Virginia and southward. 



# * Calyx 2-lipped from the greater union more or less of the 3 upper teeth, which, 

 vnih the bracts, are subulate and bearded with some spreading hairs : flowers in 

 dense and compound flattened cymes, which become considerably expanded in fruit : 

 haves membranaceous, petioled. 



2. P. iiicanum, Michx. Leaves ovate-oblong, acute, remotely toothed, 

 downy above and mostly hoary with whitish wool underneath, the uppermost whitened 

 both sides ; cymes open ; bracts lin%ar-awl-shaped and, with the calyx-teeth, more 

 or less atvn-pointed. — Rocky woods and hills. New England to Michigan, and 

 southward. Aug. — Plant 2° - 4° high, the taste intermediate between that of 

 Pennyroyal and Spearmint, as in most of the following species. Very variable. 



3. I*. Clinopodioldes, Torr. & Gr. Leaves oblong-lanceolate, scarcely 

 toothed, short-petioled, not whitened; the upper surface often smooth, the lower 

 as well as the stem downy ; cymes contracted; bracts and calyx-teeth short subu- 

 late, the latter nearly one half shorter than the tube. — Dry copses around New 

 York. Aug., Sept. — Perhaps an extreme state of No. 2. 



# * * Calyx usually almost equally f>-toothed: flowers crowded in loose heads or dense 

 clusters at the end of the branches and in the uppermost axils ; the bracts shorter 

 than the 2-lipped corollas : leaves almost sessile. 



4. P. Torreyi, Benth. Somewhat pubescent; stem strict and nearly 

 simple (2° -3° high) ; leaves thin; linear-lanceolate, tapering to both ends (mostly 

 2' long and 2" -3" wide), nearly entire; the awl-shaped calyx-teeth and bracts 

 canescent. — Dry soil, S. New York and New Jersey. Aug. — Intermediate in 

 aspect between No. 3 and No. 7. 



5. P. pilosuni) Nutt. More or less downy with long and soft whitish hairs, 

 much branched above ; leaves lanceolate, acute at both ends, or the lower ovate- 

 lanceolate, nearly entire, the floral not whitened; calyx-teeth ovate-lanceolate, 

 acute, and with the bracts hoary-haired. — Dry hills and plains, W. Penn., 

 Ohio, to Illinois, and southwai'd in the AUeghanies. July - Sept. — A smoother 

 form of this, appi-oaching the next, is, if I mistake not, Brachystemum verticil- 

 latum, Michx. (Mountains of Penn. and southward.) 



6. p. niuticilllli Pers. Minutely hoai-y throughout, or almost smooth, 

 corymbosely much branched (l°-2^° high) ; leaves ovate or broadly ovate-lanceO' 



26* 



