206 SOLANACEAE 



Corolla violet; prickles all alike. 3. D, Talula. 



Capsule nodding; plant more or less cinereous. 4. D. discolor. 



10. NICOTIANA (Tourn.) L. Tobacco. 



Corolla salverform; capsule 2-celled. 



Leaves clasping at the base; flowers diurnal. 1. N. irigonophylla. 



Leaves petioled, not clasping at the base: flowers nocturnal. 2. iV. attenuata. 



Corolla funnelform; capsule 4-celled; leaves acute at both ends. 3. N. quadrivaMs. 



Family 117. SCROPHULARIACEAE. Figwoet F.^mily. 



Anther-bearing stamens 5. 



Corolla rotate. 1. Verbascum. 



Corolla funnelform, 2-]ipped. (Occasional forms of) 7. Pentstemon. 



Anther-bearing stamens 4 or 2. 



Corolla spurred, saccate or gibbous at the base on the lower side. 



Corolla distinctly spurred at the base. 2. Linaria. 



Corolla merely saccate or gibbous at the base. 3. ANTIRRHINUii. 



Corolla neither spurred, nor saccate, nor gibbous on the lower side. 

 Stamens o, 4 anther-bearing; the fifth sterile and often rudimentary. 



Sterile stamen rudimentary, represented by a scale or gland on the upper 

 inside of the corolla-tube or throat; corolla short. 

 Corolla gibbous at the base on the upper side; ovules and seeds few or 

 solitary ;" annuals. 

 CoroUa deeply bilabiate, the middle lobe of the lower Up conduphcate 



and enclosing the stamens. 4. Collissia. 



Corolla obscurely bilabiate, its five lobes rotately spreading, the lowest 

 not enclosing the stamens. 5. Tonblla. 



Corolla not gibbous at the base, but more or le.ss ventricose especiallj' on 

 the lower side; ovules and seeds ntmierous; 4 upper lobes of the corolla 

 erect, the lower spreading; perennials. 8. SCROPHUiARLi. 



Sterile stamen elongate, fihform to spatulate; corolla-tube elongate, tubular 

 or funnelform. 

 Inflorescence thyrsoid-paniculate; seeds not with an ariliform cellular-re- 

 ticulate outer coat; corolla not gibbous at the base above; caly.x deeply 

 cleft. 7. Pentstemon. 



Inflorescence racemose or spiciform; seeds with an ariliform cellular-re- 

 ticulate outer coat. 

 Corolla gibbous at the base above; calyx divided to near the base; inflor- 

 escence racemose. 8. PentstEmonopsis. 

 Corolla not gibbous at the base above; calyx deeply tubular-funnelform, 

 obtusely 5-lobed; inflorescence spicate. 9. CHiONOPHrKi. 

 Stamens 4 or 2. 



Upper lip or lobes external in the bud. 

 Anther-bearing stamens 4. 



Corolla more or less bilabiate; sepals united into an angled tube; plants 

 leafy-stemmed. 

 Style glabrous; stigma divided into 2 oval lobes; placentae remain- 

 ing united in the middle, rarely separating. 10. MIMULUS. 

 Style glandular above; stigma peltate-funnelform; placentae separ- 

 atlngandremainingattachedtothevalves. 11. Edn.inus. 

 Corolla nearly regular. 



Calyx unequally S-parted; flowers soUtary in the axils of the leaves; 



plant caulescent. 12. Moniera. 



Calyx regularly 5-lobed; flowers soUtary on scape-like peduncles 

 from the basal rosette of leaves; plant acaulescent. 



13. LmosBLLA. 

 Anther-bearing stamens 2; calyx of 5 almost distinct sepals; sterile fila- 

 ments short or wanting. 14. Gr.\tiola. 

 Upper lip or lobes internal in the bud. 

 Stamens 2. 



CoroUa almost regularly 4-lobed. 



CoroUa rotate; leaves opposite or verticiUate. 



15. Veronica. 

 CoroUa campanulate or short-tubular; leaves alternate, mostly 

 basal. 16. SYNTHYRis. 



CoroUa none, or 2-Upped, cleft to near the base; upper Up entire, the 

 lower irregularly cleft or toothed; basal leaves ample; stem-leaves 

 bract-Uke, reduced and alternate. 17. Besset.\. 



Stamens 4. 



CoroUa sUghtly 2-Upped; stameiLs not ascending under the upper Up. 



IS. Aqalinis. 

 CoroUa distinctly 2-Upped; stamens ascending under the upper Uo. 

 Anther-sacs dissimUar, the inner one pendulous by its apex; leaves 

 mostly alternate. 

 Calyx gamosepalous. 



Calyx deeply cleft in front and behind, less deeply so on the 



sides; upper lip of the coroUa much longer than the 



3-lobed lower one. 19. Castiixeja 



Calyx almost equaUy 4-cleft; upper Up of the corolla sUghtly 



if at all longer than the 1-3-saccate lower one, ■which 



is minutely or obsoletely toothed. 



