396 



XCI. SCROPHULARIACE^E. 



0. Corolla smaller (limb 1' broad) ; plant smoothish. 



Obs. There is much confusion in this genus. All my specimens, collected by myself and others in Ohio 

 Indiana, Illinois, Missouri, Tennessee und Alabama, are plainly referable to R. strepens alone. 



ORDER XCI. SCROPHULARIACE^B. FIGWORTS. 



Herbs, undershrubs, or rarely shrubs, scentless or fetid, rarely aromatic. 



LOT. opposite, verticillafe or alternate. Fls. axillary or racemose, rarely spicate. 



Cal. Sepals 4 or 5, unequal, more or less united at base, inferior, persistent. 



Cor. bilabiate, personate or otherwise irregular, the lobes imbricate in aestivation. 



Sta. 4, didynarnous, rarely with the rudiment of the 5th ; sometimes 2 only, the 3 others either rudimen- 



Ova. free, 2-celled, many-seeded. Style simple. Stigina 2-lobed. Itary or wholly wanting. 



Fr. Capsule 2-celled, 2-vaIved, with central placentae. 



Sds. indefinite, albuminous. Embryo straight 



Genera 176, species 1814, found in every part of the world, from the equator to the regions of perpetual 

 frost. They constitute about 1-36 of the Phaenogamia of N. America. Lindtey. 



Properties. Generally acrid, bitter and deleterious plants. The most remarkable officinal species of 

 the tribe is the foxgjove (Digitalis), which exercises a wonderful control over the action of the heart, in 

 regulating its pulsations. It is also employed in cases of dropsy, hemorrhage, &c. Taken in excess it 

 speedily causes death. The Veronica Virginica, (Culvers Physic) and Linaria vulgaris (toad-flax) are 

 'nirtrntive and emetic. Numerous species are cultivated for ornament. Nearly all of them turn black in 



drying. 



FIG. 50. 1. Dasystoma pubescens. 2. Mature fruit 3. Cross section of the 2-celled capsule. 4. A 

 stamen, enlarged. 5. Mimulua ringens. 6. Calyx with the corolla partly removed, showing the didyna- 

 mous stamens in pairs, with the stigma above the highest pair. 7. Sections of the 2-celled, many-seedei. 

 capsule. 8. Plan of the flower, showing the position of the 5th rudimentary filament. 9. Linaria vulga- 

 ris, leaf and personate-bilabiate, spurred flower. 10. A winged seed. 



Conspectus of the Genera. 



Flowers $ Corolla deeply and variously lobed and colored. . . Schizanthus. f 

 diandxous. ( Corolla 4-cleft. Flowers spicate. Peduncle scape-like. Ki/ntfiiris. 17 



$ spurred at base. . . Linaria. 



f Corolla personate-bilabiate, < saccate at base. . . Antirrhinum. 4 



Corolla ye\\ow.Pedicularu. 28 

 2S 

 2i 



18 

 3 



Herbs with alter- 

 nate leaves 



<, Bracts preen. < Corolla purple. Schwalbea. 

 Corolla ringent-bilabiate. I Bracts lobed and colored. . 



. 



Fls. didy- Corolla large, tubuhr-campanulate, subemial. 

 namous. (.Corolla equally 5-rleO. Minute mud plants. 

 Flowers penUindrous. Corolla rotate, nanily regular. 



CtutiUtj*. 

 Digital*. 



