-12 dm. high; summer) (False Foxglove)
--13.

10a. Leaves alternate (2-5 dm. high; summer)
=Butter-and-eggs, Linaria vulgaris.=

10b. Leaves opposite --11.

11a. Stem erect; leaves narrowed at the base --30b.

11b. Stem creeping or spreading (summer) --12.

12a. Leaves pinnately veined, ovate
=Musk Flower, Mimulus moschatus.=

12b. Leaves palmately veined, circular or nearly so
=Yellow Monkey Flower, Mimulus glabratus var. jamesii.=

13a. Stem glabrous --14.

13b. Stem pubescent --15.

14a. Principal stem-leaves pinnatifid
=False Foxglove, Gerardia virginica.=

14b. Principal stem-leaves entire
=False Foxglove, Gerardia laevigata.=

15a. Corolla hairy on the outside
=False Foxglove, Gerardia pedicularia.=

15b. Corolla smooth on the outside =False Foxglove, Gerardia flava.=

16a. Leaves all basal; flowers on leafless stalks (1 dm. high or
less; flowers pink or white, summer)
=Mudwort, Limosella aquatica var. tenuifolia.=

16b. Leaves opposite (those subtending the flowers may be
alternate) --20.

16c. Leaves alternate or irregularly scattered --17.

17a. Leaves entire --18.

17b. Leaves pinnately lobed or incised --8a.

17c. Leaves palmately veined and lobed; stem trailing (flowers blue,
summer) =Kenilworth Ivy, Linaria cymbalaria.=

18a. Corolla-tube less than 1 cm. long, spurred --19.

18b. Corolla more than 2 cm. long, not spurred (3-8 dm. high;
flowers red-purple, summer) =Snapdragon, Antirrhinum majus.=

19a. Stem and foliage pubescent (1-3 dm. high; flowers blue, summer)
=Small Snapdragon, Linaria minor.=

19b. Stem and foliage glabrous (2-6 dm. high; flowers blue, summer)
=Toad-flax, Linaria canadensis.=

20a. Leaves with 1 or 2 lobes near the base (3-5 dm. high; flowers
purple, summer) =Gerardia, Gerardia auriculata.=

20b. Leaves linear (2-6 dm. high; flowers rose-purple, summer and
autumn) (Gerardia) --21.

20c. Leaves lanceolate or broader, not lobed --26.

21a. Pedicels equaling or but little longer than the calyx, a