706 LABIATAE (MINT FAMILY) 



* Calyx cylindric or tubular, hairy in the throat. 



-- Pubescent ; bracts minute. 

 ++ Common peduncle short but distinct. 



2. S. NEPETA (L.) Scheele. (BASIL THYME.) Soft-hairy ; stem ascending. 

 1 m. or less high ; leaves petioled, broadly ovate, obtuse, crenate ; corolla 7-8 

 mm. long, twice the length of the calyx. (Calamintha Savi; Clinopodium 

 Ktze.) Dry waste grounds, Md. to Ind., Ark., and southw. (Nat. from Eu.) 



** ++ Common peduncle none. 



3. S. ACINOS (L.) Scheele. Mostly branching and decumbent at base, 

 1.5-2.5 dm. high; leaves elliptic-ovate to -oblong, acute, about 1 cm. long, 

 petioled ; calyx constricted at the throat. (Clinopodium Ktze.) Roadsides 

 and waste places, Mass, to Ont. and N. J. (Nat. from. Eu.) 



*- - Glabrous or nearly so; common psduncles hardly any; pedicels 1-5, 

 slender, the conspicuous bracts subulate-acwninate. 



4. S. glabSlla (Michx.) Briquet. Smooth ; stems diffuse or spreading, 25 

 dm. long ; leaves slightly petioled, oblong or oblong-linear, narrowed at base, 

 2-5 cm. long, sparingly toothed or nearly entire ; clusters 3-5-flowered ; corolla 

 purplish, about 1 cm. long, fully twice the length of the calyx. (Calamintha 

 Benth. ; Clinopodium Ktze.) Damp (generally calcareous) soil, s. Ind., Ky., 

 Teun., and Ark. 



5. S. glabra (Nutt.) Fernald. Smaller; the flowering stems more upright, 

 1.5-4 dm. high, icith narrower mostly entire leaves and fewer-flowered clusters, 

 while sterile runners from the base bear ovate thickish leaves 0.5-1 cm. long. 

 (Clinopodium Ktze.; Calamintha Nuttallii Benth.) Rocky banks, N. Y. and 

 e. Ont. to Minn, and Tex. 



2. Flowers in sessile dense many-flowered clusters, and involucrate with con- 

 spicuous setaceous-subulate bracts ; calyx nearly naked in the throat. 



6. S. vulgaris (L. ) Fritsch. (BASIL.) Hairy, erect, 2-6 dm. high ; leaves 

 ovate, petioled, nearly entire ; flowers lavender to pink, in globular clusters ; 

 hairy bracts as long as the calyx. (Clinopodium L.; Calamintha Clinopodium 

 Benth.) Woods, thickets, and alluvial banks, Nfd. to Va., O., Ind., and Man. 

 (Eurasia.) 



26. HYSSdPUS [Tourn.] L. HYSSOP 



Calyx tubular, 15-nerved, equally 5-toothed, naked in the throat. Corolla 

 short, 2-lipped ; upper lip erect, flat, obscurely notched, the lower 3-cleft, with 

 the middle lobe larger and 2-cleft. Perennial herb, with wand-like simple 

 branches, lanceolate or linear entire leaves, and blue-purple flower? in small 

 clusters, crowded in a spike. (The ancient name.) 



1. H. OFFiciN\Li8 L. Roadsides, etc., sparingly escaped from gardens. 

 (Introd. from Eu.) 



27. ORfGANUM [Tourn.] L. WILD MARJORAM 



Calyx hairy in the throat, striate, 5-toothed. Tube of the corolla about the 

 length of the calyx ; the upper lip rather erect and slightly notched, the lower 

 longer, of 8 nearly equal spreading lobes. Stamens exserted, diverging. 

 Perennials, with nearly entire leaves, and purplish flowers crowded in cylindrical 

 or ellipsoid spikes, imbricated with colored bracts. (An ancient Greek name, 

 composed of flpos, a mountain, and ydvos, ornament.) 



1. 0. VL-LG\RE L. Upright, hairy, corymbose at the summit; leaves peti- 

 oled, round-ovate ; bracts ovate, obtuse, purplish. Roadsides and fields, Mass, 

 to Ont. and Pa. June-Oct. (Nat. from Eu.) 



