SCROPHITLARIACEiE. (fIGWORT FAMILY.) 89 



2. D. Tatula, L. Stem reddish-purple; corolla pale violet; prickles about equal. 



3. D. quercifolia, IIBK. Green; corolla violet-tiuged; prickles flattened, unequal, 

 some an inch long. — Lower Russian lliver. 



3. NICOTIANA. Tourn. Tobacco. 



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

 plaited. Style long; 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, tliese scarcely exceeding 6 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 Paitstemon there is a fifth rudimentary stamen. Verbaacum has live perfect 

 stamens. 



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

 Thapsus, L., with woolly decurrent leaves and V. virgatum. Withe., distinguished by nearly Buiooth nut 

 decurrent leaves and violet bearded iilaments. 



* Leaves viostly alternate; corolla personate. 



Corolla spurred at base Linaria. 1 



Corolla gibbous at Ijase Antirrhinum. 2 



* * Leaves opposite or whorled. 

 Corolla erect, the anterior lobe reflexed, 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 



CaroUa with a fifth sterile fdament on the upper side Pentstemon. 5 



Stigma 2-lipped or disk-like Mimulus. 6 



* * * Corolla rotate or short-campanulate. 



Calyx 5-toothed; corolla campanulate Limosella. 7 



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



* * * * Corolla tubular; the upper lip erect or incurved, laterally compressed, usually en- 

 closinij the ascending stamens. 



Corolla narrow with almost obsolete lower lip Castilleia. 9 



Corolla with saccate lower lip of 3 lobes Orthocarpus. 10 



