200 BORAGINACEAE 



Calyx-lobes ovate-lanceolate; inflorescence open. 32. M. riridis. 



Calyx-lobes narrowly lanceolate; inflorescence dense. 



Leaves narrowly linear. 33. M. lineariloba. 



Leaves oblong-lanceolate to ovate. 



Stem-leaves ovate to lance-ovate, finely strigose above: corolla-Urab 



and tliroat decidedly shorter than the tube. 34. A/, ovala. 

 Stem-leaves oblong-lanceolate; corolla-limb and throat nearly equalling 

 the tube. 

 Leaf-blades scabrous-liispidulous or merely pustulate above; stem 



2-4 dm. high. 35. M. coronata. 



Leaf-blades liispidulous-strigose above; stem rarelv more than 2 

 dm. high. 36. iV/. Parryi. 



Pedicels and cal>-x glabrous, except the ciliate lobes of the latter. 



Calyx-lobes ovate-lanceolate; upper stem-leaves ovate. 37. ^f. Drummondii. 



Calyx-lobes narrowly lanceolate; stem-leaves linear or oblong. 



Upper surface of the leaves short-pubescent. 38. Af. linearis. 



Upper surface of the leaves not hairy. 39. M. lanceolata. 



VI. Brachylorae. 

 Calyx-lobes ciliate on the margins. 40. A/, brachyloba. 



Calyx-lobes not cihate on the margins. 41. M. campanulala. 



VII. Alpin.\e. 



Calyx ciUate on the margins; inflorescence narrow. 

 Leaves short-strigose above, glabrous beneath. 



Corolla 7-9 mm. long; plant depressed, decumbent or ascending, 1-2 dm. high. 

 Calyx-lobes obtuse. 42. A/, alpina. 



Calyx-lobes acute. 43. M. Tucedyi. 



Corolla more than 10 mm. long; stem about 3 dm. high. 44. M. perpleia. 

 Leaves merely pustulate-punctate above. 45. A/, humilis. 



Calyx villous aU over. 



Leaves oblong or oblanceolate, glabrous beneath; inflorescence open. 



46. A/, brevistyla. 

 Leaves Uneai , densely hairy on both sides ; inflorescence narrow. 47. A/, cana. 



VIII. INCONGRUEXTES. 



One species. 48. M. incongruens. 



15. MYOSOTIS (Rupp.) L. Forget-me-not. 



Perennials, tufted; corolla 4-6 mm. wide. 1. A/, dlpestris. 



Annuals; corolla less than 2 mm. wide. 



Stem tall, 3-5 dm. high; calyx nodding in fruit, 5-7 mm. long; nutlets about 2 mm. 

 long. 2. A/, macrosperma. 



Stem lower, 1.5-3 dm. liigh; calyx not nodding in fruiting, less than 5 mm. long; nut- 

 lets about 1.5 mm. long. 3. A/, virginica. 



16. LITHOSPERMUM (Tourn.) L. Gromwell, Puccoox, 



Indian Paint. 



Annuals; nutlets dull, brownish, coarsely WTinkled and pitted. 1. L. ariense. 



Perennials, with thick taproots; nutlets wliite and shining. 



Corolla-lobes neither fimbriate nor toothed: flowers all well developed. 



Corolla greenish or pale yellow, 1 cm. or less long; crest in the throat obsolete; 

 plant very leafy, with the flowers mostly on the short branches. 

 CoroUa-Umb 3-5 mm. wide; tube not longer than the calyx; stem grajish 



strigose, but scarcely lii.spid. 2. L. Torreyi. 



CoroUa-Umb 5-8 mm. wide; tube longer than the calyx. 



Leaves linear or narrowly Unear-lanceolate; stem very hispid; plant canes- 

 cent. 3. L. ruderalc. 

 Leaves lanceolate, long-attenuate; stem scarcely hispid; plant green. 



4. L. lanceolaium. 

 Corolla bright yellow or orange, more than 1 cm. long: crest in the throat prom- 

 inent. 

 Floral leaves of the later flowers small, shorter than the flowers; Umb of the 



corolla 0-8 mm. wide. 5. L. multiflorum. 



Floral leaves of the later flowers not reduced; limb of the corolla 8-20 mm. 

 wide. 

 Hispid-pubescent; corolla-tube bearded at the base within. 



6 L. Gmelini. 

 Canescent; corolla-tube not bearded at the base witliin. 7. L. canescenx 

 Corolla-lobes of the early flowers fimbriate or dentate; later flowers cleistogamoas. 

 Corolla of the early flowers 2.5-3 cm. (rarely only 2 cm.) long; lobes distinctly 

 fimbriate. 

 Plant liirsute. 8. L. asperum. 



Plant appressed-canescent. 



Leaves narrowly linear. 9. L. linearifolium. 



Leaves spatulate to Unear-oblong. 10. L. oblongum. 



Corolla of the early flowers 2 cm. or less long; lobes dentate. 



Corolla 15-20 mm. long; limb 8-10 mm. wide; stem low. ascending or de- 

 cumbent. 11- ^- mandanense. 

 Corolla 10 mm. or less long; Umb 6-8 mm. wide; stem strict, 2-4 dm. high, 

 mostly simple, or with erect branches. 12. L. brenflorum. 



