77 2 FLORA. 



base within; filaments a little longer than the anthers; style filiform, scarcely ex, 

 serted. In thickets, western Neb. to Manitoba, Wyo. and N. Mex. June-Aug. 



9. ASPERUGO L. 



An annual rough-hispid procumbent herb, with alternate entire leaves, or the 

 uppermost sometimes opposite, and small blue or nearly white flowers, short-pedi- 

 celled and 1-3 together in the upper axils. Calyx campanulate, unequally 5 -cleft, 

 enlarged and folded together in fruit, the lobes incised-dentate. Corolla tubular- 

 campanulate, 5-lobed, the lobes imbricated. Stamens 5, included, inserted on the 

 corolla-tube; filaments short. Style short; stigma capitate. Nutlets 4, ovoid, 

 erect, granular-tuberculate, keeled, laterally attached above the middle to the 

 elongated-conic receptacle. [Latin, rough, referring to the leaves.] A mono- 

 typic genus of Europe and Asia. 



I. Asperugo procumbens L. German Madwort. Catchweed. (I. F. f. 

 3037.) Stems slender, 1.5-4.5 dm. long. Leaves oblong, lanceolate, or the lower 

 spatulate, 1-4 cm. long, the lower narrowed into margined petioles; flowers short. 

 pedicelled, about 2 mm. broad, the pedicels recurved in fruit; fruiting calyx dry 

 and membranous, strongly veined, 8-12 mm. broad. In waste places and ballast, 

 N. Y. to D. C. and Minn. Adventive from Europe. May-Aug. 



10. MYOSOTIS L. 



Low pubescent herbs, with alternate entire leaves, and small blue pink or 

 white flowers in elongated more or less i-sided racemes. Calyx 5-cleft, the lobes 

 narrow. Corolla salverform, the limb 5-lobed, the lobes convolute in the bud, 

 rounded, the throat crested. Stamens 5, included, inserted on the corolla-tube; 

 filaments filiform; anthers obtuse. Style filiform. Nutlets erect, attached by 

 their bases to the receptacle, the scar of attachment small, flat. [Greek, mouse- 

 ear.] About 35 species of wide distribution. Besides the following, 1 or 2 

 others occur in southern and western N. Am. 



Hairs of the calyx all straight; perennial swamp or brook plants. 



Calyx-lobes shorter than the tube; corolla 6-8 mm. broad. 1. M. palnstris. 



Calyx-lobes as long as the tube; corolla 4-6 mm. broad. 2. M. Iaxa. 



Hairs of the calyx, or some of them, with hooked tips; annuals or biennials. 



Fruiting pedicels longer than the calyx. 3. M. arvensis. 



Fruiting pedicels not longer than the calyx. 

 Calyx-lobes equal. 



Calyx closed after flowering; corolla yellow, changing to violet or blue. 



4. M. versicolor. 

 Calyx open after flowering; corolla blue. 5. M. collina. 



Calyx-lobes unequal ; corolla white. 



Calyx not nodding in fruit, mostly less than 5 mm. long; seeds 1.5 mm. long. 



6. M. Virginica. 

 Calyx nodding or spreading in fruit, 5-7 mm. long; seeds 2 mm. long. 



7. M. macrosperma. 



i. Myosotis palustris (L.) Lam. Forget-me-not. Mouse-ear Scorpion- 

 grass. (I. F. f. 3038.) Appressed-pubescent, with slender rootstocks or stolons; 

 stems decumbent, 1.5-5 dm - lon g- Leaves oblong, oblanceolate or oblong-lanceo- 

 late, obtuse, narrowed at the base, 2-8 cm. long; racemes loosely many-flowered; 

 pedicels longer than the calyx; calyx-lobes equal, triangular-ovate, acute, spread- 

 ing in fruit; corolla blue with a yellow eye; nutlets angled and keeled on the inner 

 side. In brooks and marshes, N. S. to N. V. and Tenn. Escaped from cultiva- 

 tion. Native of Europe and Asia. May-July. 



2. Myosotis laxa Lehm. Smaller Forget-me-not. (I. F. f. 3039. ) Simi- 

 lar to th ■ preceding. Leaves oblong, oblong lanceolate or spatulate, obtuse; 

 racemes very loosely many flowered; pedicels spreading, much longer than the 

 fruiting calyx; calyx-lobes equal, ovate -lanceolate, acutish, spreading in fruit. 

 quite as long as the tube; corolla blue with a yellow eye, its limb concave, about 

 4 mm. broad; nutlets convex on both the inner and outer sides. In wet muddy 

 places, Newt", to Out.. Va. and Tenn. Uso in Europe. May-July. 



3. Myosotis arvensis (L.) Lam. Field Scorpion-grass, or Mouse-ear. 

 (L F. f. 3040.) Hirsute-pubescent; stem 1.5-4.5 dm. long. Basal and lower 



