354 LABIAT.E. (mint FAMILY.) 



the bluish small slender corolla. — Rocky places, from St. Lawrence Co., New 

 York, to Wisconsin along the Great Lakes, northward. May - Aug. 



22. CEDRONELLA, Mu;nch. Cedronella. 



Calyx rather .obliquely 5-toothed, many-nerved. Corolla ample, expanded 

 at the throat, 2-lipped ; the upjier lip flattish or concave, 2-lobed ; the lower 3. 

 cleft, spreading, the middle lobe largest. Stamens 4, ascending; the lower pair 

 shorter. Anther-cells parallel. — Sweet-scented perennials, with pale purpHsh 

 flowers. (Name a diminutive of Ke8piov, oil of Cedar, from the aromatic leaves 

 of the original species, C. triphylla, the Balm-of-Gilead of English gardens.) 



1. C COl'd^ta, Benth. Low, with slender runners, hairy ; leaves broadly 

 heart-shaped, crenate, potioled, the floral shorter than the calyx ; whorls few- 

 flowered, at the summit of short ascending stems ; corolla hairy inside (1^' long) ; 

 stamens shorter than the upper lip. (Dracoccphalum cordatum, Nult.) — Low 

 shady banks, W. Penn. to Kentucky, and southward along the mountains. June. 



23. SYNANDRA, Nutt. Stnandra. 



Calyx bell-shaped, inflated, membranaceous, irregularly veiny, almost equally 

 4-toothed ! Corolla with a long tube, much expanded above and at the throat; 

 the upper lip slightly arched, entire ; the lower spreading and 3-cleft, with ovate 

 lobes, the middle one broadest and notched at the end. Stamens 4, ascending : 

 fllaments hairy : anthers approximate in pairs under the upper lip ; the two 

 upper each with one fertile and one smaller sterile cell, the latter cohering with 

 each other (whence the name ; from <tvv, together, and avr]p, for anther). 



1. S. grandifl6ra, Nutt. — Shaded banks, Ohio, Kentucky, and south- 

 ward. June. — A perennial? hairy herb, 1° high. Lower leaves long-petioled, 

 broadly ovate, heart-shaped, crenate, thin ; the floral sessile, gradually reduced 

 to bracts, each with a single sessile flower. Corolla Ij' long, yellowish-white. 



24. PHYSOSTEGIA, Benth. False Dragon-head. 



Calyx nearly equally 5-toothed, obscurely 10-ncrved, short-tubular or bell- 

 shaped, more or less enlarged and slightly inflafed in fruit. Corolla funnel- 

 form with a much inflated throat, 2-lipped ; the upper lip erect, nearly entire ; 

 the lower 3-parted, spreading, small : its middle lobe larger, broad and rounded, 

 notched. Stamens 4, ascending under the upper lip : anthers approximate ; 

 the cells parallel. — Smooth perennials, with upright wand-like stems, and ses- 

 sile lanceolate or oblong mostly serrate leaves. Flowers large and showy, rose 

 or flesh-color variegated with purple, opposite, crowded in simple or panicled 

 terminal leafless spikes. (Name from ^vaa, a bladder, and aTfyrj, a covering.) 



1. P. Virginiana, Benth. Corolla 1' or more long, gaping, the upper 

 lip slightly arching ; calyx-tubc oblong- or obconical-bell-shaped. (Dracoccph- 

 alum Virginianuni, L.)' — "Wet bank«, &c., W. New York to Wisconsin and 

 southward. July - Sept. — Varies from l°-4° high, stout or slender; the 

 leaves from oblong-obovate (the lower) to narrowly lanceolate, and from very 

 sharply toothed to nearly entire ; the flowers either crowded or scattered. 



