396 



XCI. SCROPHULARIACEiE. 



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



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

 Indiana, Illinois, Missouri, Tennessee and Alabama, are phuiily referable to R. strepens alone. 



Order XCI. SCROPHULARIACE^.— Figworts. 



Herbs, undershritbs, or rarely shrubs, scentless or JVi'tid, rarely aromatic. 



Lvs. opposite, verticillate or alternate. F/s. a.villary or racemose, rarely spicate. 



CaZ.— Sepals 4 or 5, unequal, more or less united at l)a.se, interior, persistent. 



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



Sta. -J^didynamous, rarely with the rudiment of the 3th; .sometimes 2 only, the 3 others either rudimen- 



Ova. free, a-celled. many-seeded. Style simple. Stig^iia 2-lobed. [tary or wholly wanlinff. 



F/-.— Capsule 2-celled, 2-valved. with central placentie. 



Sds. indefinite, albuminous. Embryo straight. 



Genera 176, species 181-1. found in every»jiart of the world, from the equator to the regions of perpetual 

 frost. They constitute about 1-36 of the Pha^nogamia ofN. America. Lindley. 



P/'O/J^/Z/e^.— Generally acrid, bitter and deleterious planls. The most remarkable officinal species of 

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

 regulating its pulsations. It is idso employed in cases of drop.^y, hemorrhiige, &c. Taken in excess it 

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

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

 doing. 



FIG. 50.— 1. Dasystoma pubescena. 2. Mature fruit. 3. Crop.^ section of the 2-celled capsule. 4. A 

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

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

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

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



Ccmspcclus of the Genera. 



f Flowers < Corolla deeplv and variously lobed and colored. . . Schizanthtts. I 



idiandrous. e Corolla 4-cleft. Flowers spicate. Peduncle scape-like. Synr/?Jm. 17 



4 spurred at base. . . Linaria. 3 

 r Corolla personate-bilabiate, ? saccate at base. . . Antirrhinum. 4 



I J Corolla velIow.Ped/CM/«rw. 28 



; B-acfs green. ; Corolla "purple. Sc/Kofl/ftea. 26 



1 Corolla ringent-bilabiate. \ Bracts Tobed and colored. 



, Fls. didy- i Corolla l.trge, tubular-campanulate, subequal. 

 Herbs with alter- I nnmous. l Corolla equally 3-cleft. Minute mud plants. . 

 nate leaves '. Flowt-rs nontandrous. Corolla rot,Tie, iieaily legiiliir. 



Castilleja. 

 Di^talis. 

 Limosella. 

 Vcrbaacum. 



