NIGHTSHADE FAMILY. 391 



Lake Co.; Russian River Valley; Napa Valley; Princeton; plains 

 of Solano Co. and southward in the San Joaquin Valley. July-Sept. 

 Flowers closing during the day and opening in the evening. This 

 and the next used hy the Indians as a smoking tobacco. 



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, J or J 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: 

 Napa Valley; Stockton, etc. July-Nov. Vespertine as the last. 



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

 shrub 6 to 15 ft. high, very slender and loosely branching, with gla- 

 brous and 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, IJ in. long; 

 corolla IJ in. long, its tube dilated above summit of the calyx, the 

 stamens inserted at this point; throat of corolla constricted just below 

 the short shallowly 5 (occasionally 4)-lobed limb; ambers and stigma 

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

 J in. long. 



Introduced from southern South America and becoming common in 

 waste places about interior towns: Vacaville (first noted about 1887); 

 Napa Valley; San Leandro, Dart/; abundant in Alameda Creek near 

 Niles; New Almaden; HoUister, Setchrll; San Joaquin Valley. 



2. DATURA L. Thorn- Apple. 

 Coarse rank-smelling herbs. Flowers large, on short peduncles in 

 the forks of the branching stem. Calyx prismatic or tubular, 

 5-toothed, in our species at length circumscissile near the base, the 

 lower part persisting as a collar or rim beneath the capsule. Corolla 

 funnelform with ample limb, convolute-plicate in the bud. Stamens 

 included; filaments long and filiform. Stigmas bilamellar. Capsule 

 prickly or spiny, 4-valved from the top or the valves indefinite; the 

 placentae project from the axis into the middle of the cells and connect 

 with the walls by a partition imperfect at the top and thus form a 

 falsely 4-celled ovary and capsule. (Derived from the Hindoo name, 

 dhatura. ) 



Calyx not prismatic, tubular; corolla large, 6 to 8 in. long; capsule nodding 

 on the short recurved pedicel, Indefinitely valved or bursting irregularly, 

 the subtending persistent base of the calyx rotate. . . 1. D. meteloides. 

 Calyx prismatic; corolla comparatively small, 4 in. long or less; capsule 

 erect, definitely 4-valved, the subtending persistent base of the calyx 

 reflexed. 

 Corolla-purple; spines subequal. . . . .2. D. Tatula. 



Corolla white; spines very unequal. . . . 3. £>. Stramonmm. 



