396 



XCI. SCROPHULARIACEiE. 



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



ops. There is much confusion in this genus. All my specimens, collected by inyselfand others in Ohio, 

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



Order XCI. SCROPHULARIACE^.— Figworts. 



Herbs, undershniis, or rarely shrubs, scentless or fVftid, raiely aromatic. 



Lvs. opposite, verticillate or alternate. FIs. axillary nr racemose, rarely spicate. 



C'd/.— Seiials 4 or 5, unequal, more or less uniteil at base, inferior, persistent. 



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



Sla. 4, (lidynamous, rarely with the rudiment of the 5th ; .sometimes 2 only, the 3 others either rudimen- 



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



Fr. — Capsule 2-celled, 2valved, with central placenta;. 



S(h. indefinite, albuminous. E?)ii)ri/o 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 ofthe Phajnogamia of N. America. Lindley. 



Pro;)m/&s.—Oenerally acrid, bitter and deleterious planls. The most remarkable officinal species of 

 the tribe is the fo.tglove (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 

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

 purgative and emetic. Numerous species are cidtivated for ornament. Nearly all ot them turn black in 

 drying. 



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

 stamen, enlarged. 5. MimuluB ringens. 6. Calyx with the corolla partly removed, showmg the didyna- 

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

 capsule. 8. Plan ofthe flower, showing the position ofthe 5th rudimentary hlaraent. 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. 1 



Uiandrous. i Corolla 4-cleft. Flowers spicate. Peduncle scape-like. S?/«r/ie)W. 17 



k spurred at base. . . Linaria. 3 

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



J S Corolla yellow Peii!W</ar!«. 28 



\ I C Bracts green. ^ Corolla purple. ScA»ifl/iea. 2S 



1 Corolla ringent-bilabiate. \ Bracts Tobed and colored. . Castilleja. 2i 

 I Corolla large, tubular-campanulate, subei|ual. . ■ Digitalis. 



FIs. didy 



r i?*. UlUy- I V.^UI01lil lillfiC. LULILll.ll -l^ailll'tnini.ii,-, otii/v-i..".. 



Herbs With alter- 1 namous. l. Corolla equally 3-cleft. Minute mud plants. . 

 nate leaves I Flowers pentandrous. Corolla roUiie, iieaily legular. 



Limoselln. 

 Verbascum. 



