212 SCROPHULARIACEAE 



Leaves glabrous; stem pubescent only above. 1. M. Langsdorfd. 



Leaves and stem pubescent throughout. 2. M. puberulus. 



Annuals, slender or low; corolla 2 cm. or less long. 



Corolla 1.5-2 cm. long, at least twice as long as the calyx. 



Stem long, usually slender; upper calyx-lobe about twice as long as the 



rest; calyx red-spotted. 3. M. nasutus. 



Stem less than 1 dm. high; upper calyx-lobe only slightly longer than the 

 rest; calyx not spotted. 4. M. thermalis. 



Corolla 5-10 mm. long, about half longer than the calyx. 



Plant perfectly glabrous. 5. M. HaUii. 



Inflorescence and calyx villous-puberulent. 6. M. microphyllus. 



Calyx-teeth obtuse; stem decumbent or floating, rooting at the nodes. 



7. M. Geyeri. 

 Calyx neither oblique, nor Inflated; its lobes nearly equal. 

 Perennials; flowers 1.5-4 cm. long; sepals lineaj-lanceolate. 

 Corolla crimson or rose. 



TaU, with erect stem, 3-10 dm. high, not stoloniferous. 8. M. Lewisii, 

 Stem 1-2 dm. high, stoloniferous. 9. M. Eastwoodiae. 



Corolla yellow; plant low or slender, weak. 



Stem leafy throughout. 10. M. moschatus. 



Stem leafy only at the base. 15. M. primuloides. 



Annuals; flowers 0.5-2 cm. long; sepals ovate, triangular, or broadly lanceolate. 

 Leaves petioled ; blades cordate to ovate-lanceolate. 



Leaf-blades cordate or broadly ovate, indistinctly 5-ribbed. 



Corolla 1.5-2 cm. long. 11. M. peduncularis. 



Corolla 1 cm. or less long. 



Leaves not very thin, dark green, decidedly pubescent; stem often 



purple and villous. 12. M. floribundus. 



Leaves very thin, membranous, light green, glabrous or nearly so; stem 

 very delicate, white. 13. M. membranaceus. 



Leaf-blades ovate-lanceolate, tapering at the base, distinctly 3-ribbed. 



14. M. breviflorus. 

 Leaves sessile, oval, oblong, lanceolate or linear. 

 Corolla yellow; lower lip lobed. 



Leavas basal or nearly so; peduncle solitary, scape-like, many times longer 



than the leaves. 15. M. primuloides. 



Leaves scattered; peduncles axillary, scarcely exceeding the leaves. 



Plant villous, 1-4 dm. high; lower lip of the corolla with 2 brown spots. 



16. M. pilosus. 

 Plant 1 dm. high or less, glabrous or glandular-puberulent; corolla 



spotless. 

 Leaves thick. Indistinctly veined; corolla 4r-6 mm. long. 



17. M. Suksdorfii. 

 Leaves thin, more or less distinctly 3-ribbed; corolla about 8 mm. 



long. 18. M. gratioloides. 

 Corolla rose-colored; lower Up entire. 



Plant glandular-puberulent. 19. M. rubellus. 



Plant glandular-villous. 20. M. Breweri. 



11. EUNANUS Benth. 



Calyx hardly at all obUque; teeth almost equal in length; stem glandular-pubescent. 

 Calyx-lobes lanceolate-subulate; upper stem-leaves somewhat aciuninate; corolla 

 more than 2 cm. long. 1 . E. Bigelovii. 



Calyx-lobes oblong-lanceolate, merely acute; leaves obtuse or acute; corolla 1.5-2 

 cm. long. 2. E. Tolmiei. 



Calyx decidedly oblique; upper tooth twice as long as the lower; plant glandular-puberu- 

 lent. 3. E. Parryi. 



12. MONNIERA (B. Juss.) P. Br. Water Hyssop. l. M. roiundifolia. 



13. LIMOSELLA L. Mudwort. 



Leaves petioled, with spatulate or oblanceolate blades. 1. L. agualica. 



Leaves Unear-flllform, or subulate. 2. L. tenuifoHa. 



14. GRATIOLA L. Hedge Hyssop. 



Flowers without bracts. 1. G. ebracteata 



Flowers subtended by a pair of bracts similar to the calyx-lobes. 2. G. virginiana. 



16. VERONICA (Tourn.) L. Speedwell, Brooklime. 

 Flowers in axillary racemes. 



Leaves all short-petloled; leaf-blades ovate, oblong or oval. 1. V. americana. 

 Leaves of the flowering shoots at lea,st sessile, lanceolate to linear. 



Pedicels less than twice as long as the fruit, the latter not strongly flattened: 

 leaves broadly lanceolate. 2. V. Anagallis-aquatica . 



Pedicels several times as long as the fruit, the latter strongly flattened; leaves 

 Unear-lanceolate or linear. 3. V. scutellata. 



Flowers in terminal spikes or racemes, or solitary in the axils of the leaves. 



Perennials; flowers in terminal spikes or racemes; bracts reduced and unlike the 

 leaves. 



