SCROPHULARIACE.E. (FIGWOET FAMILY.) 89 



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



3. D. quercifolia, HBK. Green; corolla violet-tinged; prickles flattened, unequal, 

 some an inch long. Lower Russian Kiver. 



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, these 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. SCROPHULARIACE-2E. 



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 Pentstemon there is a fifth rudimentary stamen. Verbascum has five perfect 

 stamens. 



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

 Thapsus, L., with woolly decurrent leaves and V. mrgatum, Withe., distinguished by nearly ^mooth not 

 decurrent leaves and violet bearded filaments. 



* Leaves mostly alternate; corolla personate. 



Corolla spurred at base Linaria. 1 



Corolla gibbous at base Antirrhinum. 2 



* * Leaves opposite or wliorled. 

 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 . . . Collinsia. 4 



Carolla with a fifth sterile filament 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. & 



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

 closing the ascending stamens. 



Corolla narrow with almost obsolete lower lip Castilleia. 9 



Corolla with saccate lower lip of 3 lobes Orthocarpus. 10 



