BORAGINACEAE. Vor. III. 
3. Myosotis arvénsis (L.) Hill. Field Scor- 
pion-grass or Mouse-ear. Fig. 3531. 
Myosotis scorpioides var. arvensis L. Sp. Pl. 131. 1753. 
Myosotis arvensis Hill, Veg. Syst. 7: 55. 1764. 
Annual or biennial, hirsute-pubescent ; stem erect, 
branched, 6-18’ high. Basal and lower leaves ob- 
lanceolate, obtuse, petioled or sessile; stem leaves 
mostly oblong or oblong-lanceolate, obtuse or acutish 
at the apex, narrowed to the sessile base, 4’—13’ 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, 1-13” 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. Yellow and Blue Scorpion-grass. 
Fig. 3532. 
M,. arvensis var. (?) versicolor Pers. Syn. 1: 156. 
1805. ‘ 
Myosotis versicolor J. E. Smith, Engl. Bot. p/. 480. 
1813. 
Annual, hirsute-pubescent, with mostly straight 
hairs, often much branched above; stems slender, 
erect or ascending, 4’-12’ 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-— 
5. Myosotis micrantha Pall. Blue Scorpion- 
grass. Fig. 3533. 
Myosotis micrantha Pall.; Lehm. Neue Schr. Naturf. Ges. 
Halle 3?: 24. 1817. 
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, ‘ 
