306 LABIATE. (MINT FAMILY.^ 



late, varying to lanceolate, rather rigid, acute, rounded or slightly heart-shaped at 

 tlit base, mostly sessile and minutely sharp-toothed, prominently veined, green 

 when old ; tJie floral ones, bracts, and triangular-ovate calyx-teeth, houry with 

 a Jin? dose down. Dry hills, Maine to Ohio, Kentucky, and southward. Aug. 

 Flowers in very dense clusters ; the outer bracts ovate-lanceolate and pointed, 

 the others pointless. 



# # # # Calyx equally 5-toothed: flowers collected in dense and globular, often fasci- 

 cled, small and numerous heads, which are crowded in terminal corymbs: bractt 

 rigid, closely appressed, shorter tlian the flowers : lips of the corolla very short : 

 leaves narrow, sessile, entire, rigid, crowded and clustered in the axils. 



7. P. lanceolatum, Pursh. Smoothish or minnt^y pubescent (2 high); 

 leaves lanceolate or lance-linear, obtuse at the base ; heads downy ; calyx-teeth short 

 and triangular. Dry thickets ; common. July - Sept. 



8. P. I i n i foil ll ill, Pursh. Smooth or nearly so (l-2 high); leaves 

 narrower and heads less downy than in the last ; the narrower bracts and lance- 

 awl-shaped calyx-teeth pungently pointed. Thickets, S. New England to Illinois, 

 and southward. July -Sept. 



$: ^ $: $: $: Calyx equally 5-toothed: flowers collected in few and solitary large and 

 globular heads (terminal, and in the upper axils of ilie membranaceous petioled 

 leaves) ; the bracts loose, ciliate-beardcd. 



9. P. lElOHtfiiiiiiil, Michx. Stem (l-3high) and ovate- or oblong 

 lanceolate serrate leaves glabrous ; bracts very acute or awl-pointed, the outer- 

 most ovate and leaf-like, the inner linear ; teeth of the tubular calyx short and 

 acute. Alleghanies, from S. Virginia southward. July. Flavor warm and 

 pleasant. Foliage and heads like a Monarda. 



9. ORIGANUM, L. WILD MARJORAM. 



Calyx ovate-bell-shaped, hairy in the throat, striate, 5-toothed. Tube of the 

 corolla about the length of the calyx, 2-lipped ; the upper lip rather erect and 

 slightly notched ; the lower longer, of 3 nearly equal spreading lobes. Stamens 

 4, exserted, diverging. Perennials, with nearly entire leaves, and purplish 

 flowers crowded in cylindrical or oblong spikes, which are imbricated with col- 

 ored bracts. (An ancient Greek name, said to be from opos, a mountain, and 

 ydvos, delight.) 



1, O. VULOXRE, L. Upright, hairy, corymbose at the summit; leaves peti- 

 oled, round-ovate ; bracts ovate, obtuse, purplish Dry banks, spai'ingly intro- 

 duced eastward. June -Oct. (Nat. from Eu.) 



10. TH^MUS, L. THYME. 



Calyx ovate, 2-lipped, 13-ncrved, hairy in the throat; the upper lip 3-toothed, 

 spreading; 'the lower 2-clcft, with the awl-shaped divisions ciliate. Corolla 

 short, slightly 2-lippcd ; the upper lip straight and flattish, notched at the apex ; 

 the lower 3-cleft. Stamens 4, straight and distant, usually exserted. Low pe- 

 rennials, with small and entire strongly-veined leaves, and purplish or whitish 



