354 MINT FAMILY. 



* » # Flowers short-peduncled in the axils of some of the sessile leaves. 



S. nervdsa, Pursh. Moist grounds from N. Y., S. and W.; smooth, 

 l°-2° high, slender ; leaves roundish or ovate, sparingly toothed, 1' long, 

 those subtending the flowers ovate-lanceolate and entire, the nerve-like 

 main veins prominent beneath ; flowers \' long. 



S. parvula, Michx. Low and spreading, 3'-6' high ; with round-ovate 

 or lance-ovate and slightly heart-shaped leaves £' or more long, and 

 flowers \' long. Sandy moist places, N. Eng., W. and S. 



S. galericulata, Linn. Smoothish; the slender simple stems l°-2° 

 high ; leaves ovate-lanceolate, sometimes with a heart-shaped base, acute, 

 serrate ; flowers f ' long, with arched upper lip. Wet places, N. 



30. PHYSOSTEGIA, FALSE DRAGON'S HEAD. (Name from 

 Greek words for inflated or bladdery covering.) Flowers all sum- 

 mer. 21 



P. Virginiana, Benth. Wet banks of streams, from Vt., W. and S., 

 in several varieties ; l°-4° high ; leaves mostly serrate ; flowers either 

 crowded or rather distant in the spikes ; corolla pale rose-purple, 1' or 

 more long. Handsome. 



31. MARRTJBIUM, HOREHOUND. (Late Latin name, from Hebrew 

 word for bitter.) Flowers late summer. 21 



HI. vulgare, Linn. Common H. In gardens and waste places, from 

 Eu. ; branching, spreading, hoary-downy, with round-ovate crenate- 

 rugose leaves on petioles, and small white corolla. 



32. GALEOPSIS, HEMP NETTLE. (Greek: like a weasel; the 

 likeness not obvious.) Flowers summer. (J) 



0. Tetrahit, Linn. Damp waste and cult, grounds, nat. from Eu. ; 

 a common weed, rather bristly -hairy, with stem swollen below each joint, 

 leaves ovate and coarsely serrate, and corolla purplish or variegated. 



33. MOLUCCELLA, MOLUCCA BALM, SHELL FLOWER. 

 (Name from Molucca Islands.) Flowers summer, (i) 



M. Icei/is, Linn. Erect, much branched, smooth, with roundish petioled 

 leaves, flowers sessile in their axils accompanied by spine-like bracts, the 

 remarkable large cup-shaped calyx oblique and V long, much exceeding 

 the inconspicuous corolla. Cult, from Asia. 



34. BALLOTA, BLACK HOREHOUND. (Greek name, unexplained.) 



B. nigra, Linn. A green, erect, more or less hairy plant, naturalized 

 E. from Eu. ; leaves ovate and toothed ; flowers purplish, in dense whorls ; 

 calyx teeth longer than corolla tube. 21 



35. PHLOMIS, JERUSALEM SAGE. (Old Greek name of some 

 woolly plant.) Flowers summer. 21 



P. tuberdsa, Linn. Cult, in old gardens, sparingly run wild ; stems 

 3°-5° high ; leaves ovate or ovate-oblong and heart-shaped, crenate, 

 rugose, smoothish ; flowers in remote and dense whorls ; upper lip of the 

 purple corolla white-hairy inside. Eu. 



