SCROrnULAEUCEiE. (riGWORT F.VMILY.) 89 



2. D. Tatula, L. Stem reJJish-purple; corolla palo violet; pnckles about equal. 



3. D. quercifolia, II BK. Green; corolla violet-tiuged; prickles llatteued, unequal, 

 some au iuch luii^'. — Lower llussian lliver. 



3. NICOTIAN A. Tourn. Tobacco. 



Calyx campanulate or oblong, persistent. Corolla commonly funnel-form, the limb 

 plaited. Style l<mg; stigma capitate, somewhat 2-lobed. — Very viscid herbs. 



1. N. rustica, L. Leaves petioled, ovate, or the lower slightly cordate; corolla 

 short and broad, dull-white, less than an inch long. 



2. N. Bigelovii, Wat. Leaves oblong or oblong-lanceolate, only the lower ones 

 petioled, these .scarcely exceeding G inches long; corolla nearly salver-form with tube 1^ 

 inches long, the limb an inch or more wide, its lobes acute. 



Order 43. SCROPHULARIACEiE. 



A corolla more or less bilabiate with the lobes imbricated in the bud; didynamous or 

 diandrous stamens; a single style and a 2-celled ovary and capsule marks this large 

 order. In Ptntstemon there is a fifth rudimentary stamen. Verhascum has live perfect 

 stamens. 



Two species of Virbascum (Mullein) are found in the State, but probably not within our limits; V. 

 Thajisvs, L., with woolly decurrcnt leaves and V. virgatum, "Withe., distinguitihed by nearly bmooth not 

 decurreut leaves and violet bearded filaments. 



* Leaves viosthf alternate; corolla personate. 

 Corolla spurred at base Linaria. 1 



Corolla gibbous at base Antirrliiuum. 2 



* * Leaves opposite or u'horled. 

 Corolla erect, the anterior lobe rcflexed, the other 4 erect, a scale in the throat on 



the upper side Scrophularia. 3 



Corolla declined, the middle lower lobe infolding the stamens and style. . .CoUinsia. 4 



Carolla with a fifth sterile filament on the upper siile Peutstemon. 5 



Stigma 2-lipped or disk-like Mimulus. 6 



* * * Corolla rotate or short-campanulate. 



Calyx 5-toothcd; corolla campanulate Limosella. 7 



Calyx 4-partcd; corolla 4-lobed, rotate Veronica. 8 



* * * * Corolla tubular; the itppor lip erect or inci/rvnl, lateralbj compressed, usually/ en- 



closiixj the ascendinij stamens. 



Corolla narrow with almost obsolete lower lip Castilleia. 9 



Corolla with saccate lower lip of 3 lobes Orthocarpus. 10 



