312 NIGHTSHADE FAMILY. 



Calyx bell-shaped, cup-shaped, or short -tubular, in fruit persistent under or 

 partly covering the 2-celled berry ; shrubs, with entire feather-veined leaves. 



7. CESTRUM. Corolla tubular funnel-forin or club-shaped, the lobea fo'ded or plaited 



lengthwise in the bud. Stamens included. Stigma capitate. Ovary with few 

 ovules in each cell. Berry few-seeded. Flowers in clusters. 



8. LYC1UM. Parts of the flower often in fours. Corolla funnel-form, bell-shaped or 



tubular, the lobes imbricated in the bud. Stigma capitate. Berry many-seeded, 

 red or reddish. Flowers solitary or umbeled, lateral. 

 M- -H- Stamens 4, included in the narrow throat of the salver-shaped corolla. 



9. BRUNFELSIA. Shrubs, with glossy oblong leaves. Corolla with 5 rounded and 



about equal lobes, two of them, however, a little more united. Anthers all alike. 

 * * Fruit a dry dehiscent capsule. 

 +- Stamens normally 5, all perfect. 

 M- Calyx urn-shaped in fruit, inclosing the pod ; corolla considerably irregular. 



10. H Y03CYAMUS. Calyx 5-lobed, the spreading border becoming reticulated, inclosing 



the 2-celled pod, which opens by the top falling off as a lid. Corolla short funnel- 

 form, with the plaited border more or less oblique and unequal. Stamens declined. 

 H- -H- Calyx 5-parted to near the base, the lobes foliaceous. 



11. PETUNIA. Calyx with narrow somewhat spatulate lobes much longer than the tube. 



Corolla funnel-form or somewhat salver-shaped, the 5-lobed border commonly a 

 little unequal. Stamens included in the tube, unequal. Pod 2-celled, 2-valved. 



++-M--H- Calyx tubular, prismatic, or bell-shaped, 



= Covering the pod or nearly so ; corolla salver shaped or funnel-form, the lobes 

 plaited in the bud ; seeds minute. 



12. NIEKEMBERGIA. Corolla with very slender thread-like tube (!'-!' long), abruptly- 



expanded at the narrow throat into a saucer-shaped or almost wheel-shaped 5-lobed 

 border. Stamens short, borne on the throat. Stigma kidney-shaped and somewhat 

 2-lipped. Flowers scattered. 



13. NICOTIANA. Corolla with a regular 5-lobed border. Stamens inserted on its tube, 



included; filaments straight. Stigma capitate. Pod 2-4-valved from the apex. 

 Flowers more or less racemed or panicled. 

 = Prismatic, falling away after flowering, leaving the 2^-celledpod naked. 



14. DATURA. Corolla funnel-form, strongly plaited in the bud, and with 5 or more pointed 



teeth. (Lessons, Figs. 246, 282.) Filaments slender. Stigma somewhat 2-lobed or 

 2-lipped. Pod globular, in the common species prickly and 4-celled, but the 2 pla- 

 centae-bearing or false partitions often incomplete. Seeds large and fiat, somewhat 

 kidney-shaped. Flowers terminal or in the forks. 



+- +- Stamens 4 only, included within the narrow throat of the salver-shaped corolla. 



15. BROWALLIA. Herbs, mostly a little pubescent and clammy. Corolla with some- 



what unequally 5-lobed border, the lobes with a broad notch. Two of the anthers 

 shorter and only 1-celled. Leaves alternate and entire. 



<---*- Anther-bearing stamens 4, and a sterile filament ; corolla with wide throat. 



16. SALPIGLOSSIS. Herbs, with cut-toothed or pinnatifid alternate leaves. Corolla 



funnel-form, with very open throat, a little oblique or irregular, the lobes all with 

 a deep notch at the end. Pod oblong. 



- *- +- +- Stamens with 2 good anthers, the 2 or 8 others small and abortive. 



17. SCHIZANTHUS. Calyx 5-parted, the divisions narrow. Corolla imbricated and not 



plaited in the bud ; the smaller tip 3-parted ; the larger 5-cleft, and the lobes again 

 2-cleft or deeply notched, the tube shorter than the divisions, which appear as if cut 

 up, the middle lobe of the smaller lip, towards which the stamens and style are in- 

 clined, more or less hooded or sac-like. Stigma minute. Leaves alternate, pinnate, 

 or pinnately cut. 



