808 Labiatae Prunella 



state in lawns, gardens, waste places, and moist, open woodland along 

 streams, and along roadsides. It is an obnoxious weed wherever found. It 

 prefers the open and is generally found with bluegrass and herbs, and not 

 in leaf mold in woods. 



Nat. of Eu. ; naturalized from Newf. and Ont. to Minn, and Oreg., 

 southw. to Ga., Tenn., Kans., and Colo. 



7254. PRUNELLA L. 



[Fernald. The indigenous varieties of Prunella vulgaris in North 

 America. Rhodora 15: 179-186. 1913.] 



Principal or median cauline leaves ovate or ovate-oblong, rounded at the base, two fifths 

 to two thirds as wide as long 1. P. vulgaris. 



Principal or median cauline leaves lanceolate to oblong, gradually narrowed or cuneate 



at the base (sometimes broad at the base), a fifth to half as wide as long 



la. P. vulgaris var. lanceolata. 



1. Prunella vulgaris L. Selfheal. This is the European plant and 

 is described by Bentham as having the "stem procumbent or creeping, 

 and rooting at the base, with ascending flowering branches, sometimes 

 2 or 3 inches, rarely near a foot high." Smith described a variety minor 

 as having "stems a span high, erect or ascending, etc." Clute (Amer. 

 Bot. 3: 10. 1902) described Prunella vulgaris var. nana as a plant of 

 lawns, creeping and rooting at the nodes. I have found this plant an 

 obnoxious weed in a lawn in Bluffton, Indiana. It is also well established 

 in a lawn at 206 Wakewa St., South Bend, St. Joseph County and probably 

 in other places throughout the state. No doubt many of our reports for this 

 species, however, should be referred to the native variety. 



Nat. of Eu. ; naturalized from Newf. and Que. to Minn., southw. to 

 N. C. and Mex. 



la. Prunella vulgaris var. lanceolata (Bart.) Fern. (Rhodora 15: 179- 

 186. 1913.) American Selfheal. Map 1747. Frequent throughout the 

 state in moist or rather dry open woods, fallow fields, waste places, hay- 

 fields, and along roadsides and railroads. It prefers rather sandy and moist 

 soil near streams and in ravines, and is usually found in grassy places. It 

 adapts itself to almost all kinds of soils and situations. 



Newf. to B. C, southw. to Fla., La., and Ariz. 



7257. PHYSOSTEGIA Benth. False-dragonhead 



Upper leaves of stem not conspicuously reduced in size; calyx densely puberulent with 

 stiff, straight hairs; flowers 8-20 mm long. 



Flowers usually 15-20 mm long; leaves sessile 1. P. speciosa. 



Flowers usually 8-15 mm long; leaves petiolate. (See excluded species no. 528, p. 



1084) P- parviflora. 



Upper leaves of stem greatly reduced in size; calyx densely puberulent with stiff, 



straight hairs and covered more or less with stipitate glands of about the same 



length as the hairs (sometimes the glands few) ; flowers generally 20-30 mm long. 



2. P. Virginia mi. 



1. Physostegia speciosa (Sweet) Sweet. {Physostegia virginiana in 



part, of Gray, Man., ed. 7 and Dracocephalum virginianum in part, of Brit- 



