BORAG1NACEAE 523 



1. M. scorpoides L. (M. palustris (L.) Lam.) In brooks and 



marshes, escaped from cultivation: N. S. to N. Y. and Tenn. 

 Native of Europe. 



Not uncommon as an escape in most parts of our range, ap- 

 parently wanting in the pine-barrens. 



2. M. laxa Lehm. In wet muddy places: Newf. to Ont., Va. and 



Tenn. Native of Europe. 



Frequent throughout the range, less common in the pine-barrens 

 than elsewhere. 



3. M. arvensis (L.) Hill. In fields: N. B. to Ont. and Minn., 



south to W. Va. Also in Europe. 



Very rare, always as a weed, near the City of New York and 

 locally elsewhere. 



4. M. versicolor (Pers.) Reichenb. In fields and along roadsides: 



southern N. Y. to Del. Naturalized from Europe. 

 Locally rare as a weed. 



5. M. virginica (L.) B. S. P. On dry hills and banks: Me. to 



Ont., Minn., Ga. and Tex. 



Conn. Not very common over most of the state. 



N. Y. On the north shore of L. I. and on S. I., not reported from 



the south shore of L. I., thence increasing northward. 

 N. J. Throughout the state except in the pine-barrens. 

 Pa. Northampton, Bucks and Philadelphia counties. 



Tertian', unknown on Beacon Hill, common elsewhere: Creta- 

 ceous, common: Older Formations, increasing northward. 117- 

 220 days. Sea level-3,080 ft. 

 Myosolis micrantha Pall, has been collected as a waif and recorded as M.collina Hoffm. 



8. Lithospermum [Tourn.] L. 



Corolla white or yellowish, its tube shorter than or equalling the calyx; 

 flowers distant. 

 Nutlets brown, wrinkled and pitted; annual or biennial. I. L. arvense. 



Nutlets white, smooth and shining; perennial. 



Leaves lanceolate, acute; nutlets ovoid. 2. L. officinale. 



Leaves ovate, acuminate; nutlets globose-ovoid. 3. L. latifolium. 



Corolla bright yellow, its tube much longer than the calyx; flowers 



dense. 4. L. canescens. 



i. L. arvense L. In waste places and fields: Que. to Ont., 

 Mich., Ga. and Kan. Naturalized from Europe. 

 Common as a weed in most parts of our range. 



