416 LABIATE. (mint FAMILY.) 



22. CEDRONELLA, Moench. 



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

 at the throat, 2-lipped ; the upper 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 pur- 

 plish flowers. (Name a diminutive of cedrus, the cedar-tree, from the aro- 

 matic leaves of C. triphylla, the Dalm-of-Gllead of English gardens.) 



1. C. COrdata, Benth Low, with slender runners, hairy ; leaves broadly 

 heart-shaped, crenate, petioled, 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. — Moist shady banls, W. Penu. to 

 Ky., south to the mountains of N. C. and Tenn. 



23. NEPETA, L. Cat-Mixt. 



Calyx tubular, often incurved, obliquely 5-toothed. Corolla dilated in the 

 throat, 2-lipped ; the upper lip erect, rather concavo, notched or 2-cleft ; the 

 lower spreading, 3-cleft, the middle lobe largest, either 2-lobed or entire. Sta- 

 mens 4, ascending under the upper lip, the lower pair shorter ; antliers ap- 

 proximate in pairs, the cells divergent. — Perennial herbs. (The Latin name, 

 thought to be derived from Nepete, an Etrurian city.) 



§ L Ci/mose clusters rather dense and man ij-Jioicered , forming interrupted spikes 

 or racemes; upper floral leaves small and brad-like. 



"N. CatXkia, L. (Catnip.) Downy, erect, branched ; leaves heart-shaped, 

 oblong, deeply crenate, whitish-downy underneath ; corolla whitish, dotted 

 with purple. -^ Near dwellings; a very common weed. July -Sept. (Nat. 

 from Eu.) 

 §2. GLECH6MA. Leaves all alike ; the axillari/ clusters loosehjfeiv-Jlou-ered. 



N. Glech6ma, Benth. (Ground Ivy. Gill-over-the-Ground.) Creep- 

 ing and trailing; leaves petioled, round kidney-shaped, crenate, green both 

 sides ; corolla thrice the length of the calyx, light blue. — Damp or shady 

 places, common. (Nat. from Eu.) 



24. DRACOCEPHALUM, Tourn. Dragon-Head. 



Calyx tubular, 13- 15-nerved, straight, 5-toothed; the upper tooth usually 

 much the largest. Corolla 2-lipped ; the upper lip slightly arched and notched ; 

 the lower spreading, 3-cleft, Avith its middle lobe largest and 2-cleft or notched 

 at the end. Stamens 4, ascending under the upper lip, the lower pair shorter . 

 anthers approximate by pairs, the cells divergent. — Whorls many -flowered, 

 mostlv spiked or capitate, and Avith awn-toothed or fringed leafy bracts- 

 (Name from SpaKcou, a dragon, and Ke<paK-n, head, alluding to the form of the 

 corolla in the original species.) 



I. D. parviflorum, Nutt. Annual or biennial; stem erect, leafy (8- 

 20' high); leaves ovate-lanceolate, sharply cut-toothed, petioled; whorls 

 crowded in a terminal head or spike ; upper tooth of the calyx ovate, nearly 

 equalling the bluish small slender corolla. — Kocky or gravelly soil, northern 

 N. Y. to Iowa and Minn., and westward. 



25. SCUTELLARIA, L. Skullcap. 



Calyx bell-shaped in flower, 2-lipped ; the lips entire, closed in fruit, the up- 

 per with a helmet-like at length concave and enlarged appendage on the back 



