1b. Corolla blue with a yellow center, 4-8 mm. wide (1-5 dm. high; spring and early summer) (Forget-me-not) --13. 1c. Corolla deep orange, salver-form (2-6 dm. high; spring) (Puccoon) --15. 1d. Corolla white or blue, or lightly tinged with yellow or red --2. 2a. Corolla rotate, with a very short tube, bright-blue, about 20 mm. broad (3-8 dm. high; summer) =Borage, Borago officinalis.= 2b. Corolla tubular, funnel-form, or salver-form --3. 3a. Corolla 10 mm. long or more; its tube distinctly longer than the calyx --4. 3b. Corolla less than 10 mm. long; its tube equaling or shorter than the calyx --8. 4a. Flowers yellowish-white, or somewhat tinged with pink or greenish --5. 4b. Flowers blue or purple --6. 5a. Corolla-lobes erect; leaves sessile (3-8 dm. high; early summer) =False Gromwell; Onosmodium occidentale.= 5b. Corolla-lobes spreading; leaves decurrent (6-10 dm. high; summer) =Comfrey, Symphytum officinale.= 6a. Stem and leaves glabrous (3-6 dm. high; spring) =Bluebell, Mertensia virginica.= 6b. Stem and leaves pubescent (4-8 dm. high) --7. 7a. Corolla regular; leaves ovate or ovate-lanceolate (summer) =Bluebell, Mertensia paniculata.= 7b. Corolla irregular; leaves linear-oblong (summer) =Blueweed, Echium vulgare.= 8a. Ovary and fruit covered with hooked prickles --9. 8b. Ovary and fruit not prickly --12. 9a. Principal leaves 2.5 cm. wide or more --10. 9b. Principal leaves 2 cm. wide or less (3-8 dm. high; flowers blue or white, summer) (Stickseed) --11. 10a. Leaves chiefly basal, the racemes on long leafless peduncles (4-8 dm. high; flowers pale blue, early summer) =Wild Comfrey, Cynoglossum boreale.= 10b. Stems leafy (8-12 dm. high; flowers white, summer) =Beggar Lice, Lappula virginiana.= 11a. A bract at the base of each flower =Stickseed, Lappula echinata.= 11b. Racemes without bracts at the base of each flower =Stickseed, Lappula deflexa var. americana.= 12a. Racemes bractless, or bracted only at the base (1-4 dm. high) --14. 12b. Raceme with a bract at the base of each flower (flowers white or yellowish) --17. 13a. Corolla 4 mm. wide =Forget-me-not, Myosotis laxa.= 13b. Corolla 6-8 mm. wide =Forget-me-not, Myosotis scorpioides.= 14a. Calyx-lobes all of equal length (summer) =Scorpion Grass, Myosotis arvensis.= 14b. Calyx-lobes distinctly unequal in length (spring) =Scorpion Grass, Myosotis virginica.= 15a. Corolla-lobes denticulate =Puccoon, Lithospermum angustifolium.=