Isanthus 



Labiatae 



801 



50 



Map 1728 



Teucnum Occident 



ale bray 



50 



Map 1729 



Teucnum occidentale 

 var. boreale (Bickn.) Fern. 



given to separate them are not constant enough to be of much assistance. 

 Probably only a form of the species in our area. The range is probably 

 N. E. to Minn., southw. to Tex. 



2. Teucnum occidentale Gray. Map 1728. Infrequent and found mostly 

 in low ground about lakes and in prairie habitats. 



Maine to B. C, southw. to Pa., Ohio, Mo., N. Mex., and Calif. 



2a. Teucrium occidentale var. boreale (Bickn.) Fern. (Rhodora 10: 

 85. 1908.) Map 1729. Infrequent to rare in the habitats of the species. 

 Northern N. H. to Wash., southw. to w. N. Y., 111., and Tex. 



7217. ISANTHUS Michx. 



1. Isanthus brachiatus (L.) BSP. False Pennyroyal. Map 1730. My 

 specimens, supplemented by reports from 6 other counties made by other 

 authors, show that this species is an infrequent to rare plant throughout 

 the state. It may, however, be more frequent than our records indicate 

 because it closely resembles the common pennyroyal and may not be distin- 

 guished easily. It is generally found in bare, gravelly or sandy places about 

 gravel pits, in old lake beds, along roadsides and railroads, washed places 

 in fallow fields, and on open, wooded slopes. Usually common in large 

 colonies where it is found. 



Vt., Que. to Minn., southw. to Ga. and Tex. 



7218. TRICHOSTEMA L. 



1. Trichostema dichotomum L. Bluecurls. Map 1731. I have found 

 this rare species on the dry, sandy spill bank of the Kankakee River west 

 of the Tefft Bridge in Jasper County, on a wooded ridge in Harrison 

 County, in the Princeton fine sand in an open black and white oak woods 

 4 miles south of Vincennes, and on a slight rise in a post and pin oak woods 

 in the "flats" about 4 miles northwest of Chrisney in Spencer County. It 



