760 SOLAN ACEAE 



2. N, attenuata Torr. Annual; stem 3-6 dm. viscid-puberulent; leaves 

 petioled; blades ovate to lanceolate, long-acuminate, 5-10 cm. long; inflorescence 

 paniculate; calyx-teeth triangular-lanceolate; corolla dull white or greenish, gla- 

 brous, 2-2.5 cm. long. A^ Torreyana Nels. & Macbr. Dry or sandy ground: 

 Mont.— N.M.— Calif.— B.C.; Mex. Son.—Submont. Je-S. 



3. N. quadrivalvis Pursh. Annual; stem 3-6 dm. high, viscid-pubescent, 

 branched; lower leaves petioled, the upper sessile; blades ovate-lanceolate, 

 lanceolate, or oblong, acute at both ends, viscid-pubescent; flowers few; corolla 

 about 2 cm. long, funnelform. Valleys and cultivated ground: Wash.— Mont. — 

 Ore. 



Family 117. SCROPHULARIACEAE. Figwort Family. 



Annual or perennial herbs, rarely shrubs or trees, with mostly round 

 stems. Leaves usually opposite, sometimes whorled, or alternate, without 

 stipules. Flowers perfect, more or less irregular. Calyx of 5 or 4, more or 

 less imbricate and united sepals. Corolla usually 2-lipped, sometimes 

 almost regular. Stamens usually 4, rarely 5, or only 2 fertile, one pair 

 longer than the rest, the fifth stamen sometimes represented by a sterile 

 filament, all partly adnate to the tube of the corolla. Gynoecium of 2 

 united carpels; ovary 2-celled; styles usually united, rarely distinct. Fruit 

 a 2-celled, 2-valved capsule, rarely baccate. Seeds numerous; endosperm 

 present, surrounding the embryo, fleshy or cartilaginous. [Rhinanthaceae.] 



Anther-bearing stamens 5. 



CoroUa rotate. 1. Verbascum. 



Corolla funnelform, 2-lipped. (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. Linari.\.. 



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



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



Stamens 5, 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 tliroat; corolla short. 

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

 sohtary; amiuals. 

 Corolla deeply bilabiate, the middle lobe of the lower lip condupUcate 



and enclosing the stamens. 4. COLLixsi.v. 



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

 not enclosing the stamens. 5. Toxell.\. 



Corolla not gibl>ous at the base, but more or less ventricose especially on 

 the lower side; ovnles and .seeds numerous; 4 upper lobes of the corolla 

 erect, the lower spreading; peremiials. 6. Scrophul.\ria. 



Sterile .stamen elongate, filiform to spatulate; corolla-tube elongate, tubular 

 or fimnclforni. 

 Inflorescence thjrsoid-paniciilate; seeds not with an ariliform cellular-re- 

 ticulate outer coat; coi'oUa not gibbous at the base above; calyx deeply 

 cleft. 7. Pe.xtstemo.n. 



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-fimnelform, 

 obtasely 5-lobed; inflorescence spicate. 9. Chioxophil.v. 

 Stamens 4 or 2. 



Upper lip or lobes external in the bud. 

 Antlier-bearing stamens 4. 



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

 leafy-stcnirncd. 

 Style gla.l)r()us; stigma divided into 2 oval lobes; placentae remain- 

 ing united in tlie middle, rarelyseparatlng. 10. MlMULUS. 

 Style glandular above; stigma peltate-funnel form; placentae separ- 

 ating and remaining attached to the valves. 



11. EUN.^NUS. 



Corolla nearly r(\L;alar. 



Calyx uiit(iually .")-parted; flowers soUtary in the axils of the leaves; 



plant caulfs'cent. 12. MoxiERA. 



Cal.vx r(!gularly .5-lobed; flowers .solitary on scajie-like peduncles 

 from the basal rosette of leaves; plant acaulescent. 



13. Limosella. 



