Bl IRAGINACEAE. 



Vol. IN. 



3. Myosotis arvensis (I..) TTill. Field Scor- 

 pion-grass or Mouse-ear. Fig. 3531. 



Myosotis scorpioides var. arvensis L. Sp. PI. 131. 1753. 

 Myosotis arvensis 1 1 1 1 1 . Veg. Syst. 7: 55. 1764. 



Annual or biennial, hirsute-pubescent : stem erect, 

 branched, 6'- [8' high. Masai and lower leaves ob- 

 lanccolatc, obtuse, petioled or sessile; stem leaves 

 in >*.tly oblong or oblong-lanceolate, obtuse or acutish 

 at the apex, narrowed to the sessile base, ' 1 '.' long, 

 2"~4" wide; racemes loosely flowered; fruiting pedi- 

 cels longer than the calyx; hairs of the calyx, or 

 some of them, with minutely hooked tips, the lobes 

 equal, erect, or connivent in fruit, triangular-lanceo- 

 late, acute, about as long as the tube: corolla blue 

 or white, the limb concave, 1 " 1 2 " broad; nutlets 

 convex on the outer side, somewhat keeled on the 

 inner. 



In fields, Newfoundland to western Ontario and 

 Minnesota, south to West Virginia. Perhaps not 

 indigenous. Also in Europe. June- Aug. 



4. Myosotis versicolor (Pers.) J. E. Smith. 



Fig- 3532. 



Syn. 



Yellow and Blue Scorpion-grass. 



156. 



M. arvensis var. (?) versicolor Pers 



1S05. 

 Myosotis versicolor J. E. Smith, Engl, Bot. pi. 480. 



1813. 



Annual, hirsute-pubescent, with mostly straight 

 hairs, often much branched above; stems slender, 

 erect or ascending, 4'-l2' high. Leaves oblong, 

 obtuse or obtusish, sessile, or nearly so, or the 

 lower spatulate and narrowed into margined peti- 

 oles; racemes slender, mostly naked below; pedi- 

 cels shorter than the fruiting calyx, appressed- 

 pubescent, erect ; calyx equally 5-cleft, the lobes 

 linear-lanceolate, erect or connivent in fruit, 

 longer than or equalling the tube, the hairs, or 

 some of them, with minutely hooked tips ; corolla 

 pale yellow changing to violet and blue, its limb 

 about 1" broad ; nutlets convex on the outer, 

 slightly keeled on the inner side, shorter than 

 the style. 



In fields and along roadsides, southern New York 

 and Delaware. Naturalized from Europe. May- 

 July. 



5. Myosotis micrantha Pall, 

 grass. Fi 



Blue Scorpion- 



3533- 



Myosotis micrantha Pall.; Lehm. Neue Schr. Naturf. Ges. 

 Halle 3": 24. 1S17. 



Annual or biennial, 8' high or less, branched from 

 near the base, the pubescence of both straight and 

 hooked hairs. Leaves oblong to lanceolate, mostly ses- 

 sile, obtuse or obtusish; racemes slender, distantly flow- 

 ered to the base; pedicels much shorter than the calyx, 

 pubescent, and usually with some hooked hairs; calyx 

 equally 5-cleft, about as long as the corolla-tube; style 

 not longer than the nutlets. 



Fields and roadsides, Ontario to Massachusetts and Ohio. 

 May-July. Naturalized from Europe. Has been mistaken in 

 America for M. collina Hoffm. 



