760 SOLANACEAE 



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 groimd: 

 Mont. — N.M. — Calif. — B.C.; Mex. Son, — SubmonL 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, wdthout 

 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. Gynoccium 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.j 



Anther-bearing stamens 5. 



CoroUa rotate. 1. Verbascum. 



Corolla funnelform, 2-lipped. (Occasional forms of) 7. PenT:51EMOX. 



Anther-bearing stamens 4 or 2. 



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



Corolla distinctly spurred at the ba>se. 2. Lixarta. 



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



Corolla neither spurred, 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 throat; corolla short. 

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



sohtary; annuals. , ... 



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



and enclosing the stamens. 4. Colltxsia. 



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

 not enclosing the stamens. 6. Tonell-V. 



Corolla not gibbous at the base, but more or less ventricose especially on 

 the lower side; ovules and seeds numerous; 4 upper lobes of the corona 

 erect, the lower spreading; perennials. 6. Sckopiiulaki-A.. 



Sterile stamen elongate, fthform to spatulate; corolla-tube elongate, tuomar 



or funnelform. ,, , ._ 



Inflorescence thyrsoid-paniculate ; seeds not with an arihform ceinuar-re- 



. ticulate outer coat; coroUa not gibbous at the base above; calyx deeply 



cleft. 7. Pentstemon. 



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



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

 escence racemose. 8. Pentstemonopsi^- 



Corolla not gibbous at the base above; calyx deeply tubular-funneiiorm. 

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



Stamens 4 or 2. 



Upper Up or lobes external in the bud. 



Ant her- bearing stamens 4. j x, i «+ a 



Corolla more or less bflabiate; sepals united into an angled tube; pianx-s 



leafy-stemmed. , , ^5_ 



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



ingunitedin the middle, rarely separating. 10. MIMULLS. 

 Style glandular above; stigma peltate-f unnclf orm ; placentae separ- 

 ating and remaining attached to the valves. 



11. EUNANXrS. 



Corolla nearly regular. i^..,rr»«5' 



Calyx unequally 5-parted; flowers sohtary in the axds of the leaves, 



plant caulescent. 12. Moxiera. 



Calyx regularly 5-lobed; flowers solitary on scape-like pedimcie^ 

 from the basal rosette of leaves; plant acaulescent. 



13. LlMOSEL.Lu\. 



