LAMIACEAE 



529 



3. Isanthus Michx. 

 1. I. brachiatus (L.) B. S. P. In sandy soil: especially along 

 streams: Que. and Ont. to Minn., Kan., Ga. and Tex. 

 Conn. Recorded but no definite station known. 

 N. Y. Catskill Mts. 

 N. J. Monmouth, Mercer, Hunterdon, Warren and Bergen 



counties. 

 Pa. Philadelphia and Bucks counties. 



4. Trichostema [Gronov.] L. 



Leaves oblong or lanceolate; minutely sticky-pubescent. 1. T. dicholomum. 



Leaves linear, plant puberulent or glabrous. 2. T. lineare. 



i. T. dichotomum L. In dry fields: Me. to Fla., Pa., Ky. and 

 Tex. 



Common throughout the range. 



2. T. lineare Nutt. In sandy fields and dry barrens: R. I. to 

 Ga. and La. 



Conn. Collected at Milford in 1829; not since recorded. 

 N. Y. Occasional on L. I., S. I., apparently wanting elsewhere. 

 N. J. Not rare in the pine-barrens and the region just west and 



north of them, unknown elsewhere. 

 Pa. Philadelphia Co. 



Tertiary, not very common: Cretaceous, scattered: Older Forma- 

 tions, decreasing and becoming scattered northward. 168-220 

 days. About sea level. 



5. Scutellaria [Rivin.] L. 



Nutlets wingless, very slightly elevated on the short gynobase. 

 Flowers 6-10 mm. long, in axillary and sometimes terminal 



racemes. 1. S. lateriflora. 



Flowers 12-30 mm. long, in terminal, often panicled racemes. 



Plant glabrous or very nearly so; leaves broad. 2. 5. serrata. 



Plants pubescent, puberulent or pilose. 



All except the floral leaves crenate or dentate. 



Canescent, not glandular; corolla canescent. 3. 5. incana. 



Pubescent below, glandular above; corolla 



nearly glabrous. 4. 5. pilosa. 



All except the lowest leaves entire. 5. 5. integrifolia. 



Flowers solitary in the axils. 



Flowers 4-8 mm. long. 6. 5. parvula. 



Flowers 16-26 mm. long. 7. 5. galericidata. 



Nutlets membranous-winged, elevated on the slender gynobase; 



flowers axillary. 8. 5. nervosa. 



35 



