366 SOLANACEAE. 



Corolla tubular or funnclform; fruit a capsule. 



Capsule 2-celled, smooth; flowers in a terminal panicle 1. Nicotiana. 



Capsule falsely 4-celled, prickly; flowers solitary, very large 2. Datura. 



Corolla rotate; fruit a berry; flowers in umbels or cymes 3. Solanum. 



1. NICOTIANA L. Tobacco. 

 Eeavy scouted usually viscid-pubescent herbs (except one) with entire 

 Leaves and pazdcled flowers. Calyx persistent, more or less investing the 

 fruit, 5-toothed or -lobed. Corolla funnelform or salverform, plicate and 

 Bomewhal imbricate in the bud. Filaments filiform, mostly included. Ovary 

 2-celled, with large and thick placentae. Fruit a smooth 2-celled capsule, 

 Bepticidal, and the valves promptly 2-cleft at apex, thus seeming as if 4-valved. 

 Seeds small, numerous. (Jean Nicot, 1530-1600, French diplomat and author 

 of the most ancient dictionary of the French language, but more celebrated 

 as having introduced tobacco into France from Portugal.) 



Annuals; flower white. 



Cauline leaves sessile; calyx-teeth, as long as tube; corolla-limb broad 1. N. bigelovii. 



Cauline leaves petioled; calyx-teeth commonly short, % to l / 3 as long as tube; corolla- 

 limb narrow * . 2. N. attenuata. 



Shrub; flowers yellow; throat of corolla constricted under the narrow limb.. 3. N. glauca. 



1. N. bigelovii Wats. Stem simple at base and branched above, or 

 branched near the base, 1% to 2 ft. high; herbage with glandular indument, 

 very ill-smelling; radical leaves oblong-ovate, acute, petioled; cauline similar, 

 sessile (the lower sometimes petioled), often contracted above the middle into 

 a lanceolate apex, the uppermost lanceolate; flowers few, mostly remote along 

 the branches; calyx with slender teeth as long as the tube; corolla-tube l x /2 

 in. long, the limb 1 in. wide; filaments unequally inserted high in the tube, 

 glabrous ; capsule obtuse, shorter than the calyx. 



Flood-plains of rivers and open valley floors from the North Coast Ranges 

 and Sacramento Valley southward to Southern California. Flowers closing 

 during the day and opening in the evening. This and the next used by the 

 Indians as a smoking tobacco; some of the tribes certainly cultivated it, 

 this being their only strictly agricultural practice. 



2. N. attenuata Torr. Habit of the preceding; glandular-pubescent and 

 odorous much as the preceding; lower leaves broadly ovate, the upper varying 

 to narrowly lanceolate, all petioled; flowers many, disposed in clusters along 

 and terminating the branches; calyx-teeth triangular-lanceolate, 14 or % the 

 Length of the calyx-tube, rarely subulate and as long; corolla-tube 1 in. long, 

 with narrow limb 3 to 5 lines in diameter; filaments equally inserted low down 

 in the tube, pubescent below the middle; capsule longer than the calyx, at 

 Least in the forms with short calyx-teeth. 



Common throughout California, especially towards the interior and south- 

 war- 1. .luly-Nov. Vespertine as the last. 



3. N. glauca Graham. Tree Tobacco. Soft-woody evergreen shrub 6 

 to L5 ft. high, very Blender and loosely branching, with glabrous ami glaucous 

 herbage; Leaves ovate, entire, 8 in. long, on petioles 4 in. long; uppermost 

 Leaves reduced, ovate to oblong; flowers in terminal panicles; calyx unequally 

 5-toothed, 1 ' _• in. Long; corolla l'._, in. long, its tube dilated above summit 

 of the calyx, the stamens inserted at this point ; throat of corolla constricted 



JU81 belOW the short Shallowly 5 (occasionally 4) -lobed Limb; anthers and 



stigma in throat of corolla; ovary seated on a yellowish disk; capsule oblong, 



1 •_. in. long. 



Introduced from southern South America and becoming common in waste 



