684 SOLANACEAE 



1. Nicotiana glauca R. Graham. Tree Tobacco or Mexican Tobacco. Fig. 4511. 



ATjcoitana i//a«ca R. Graham, Edinb. Phil. Journ. 1828: 174. 1828. 



Glabrous shrub or small tree 8 m. high or less, with ample, long-petiolate, glaucous, some- 

 what leathery ovate to lanceolate-oblong leaves 5-18 cm. long, the blades acute or obtuse at the 

 apex, acute to subcordate at the base, entire or slightly repand; flowers greenish yellow, in lax 

 terminal panicles ; ca^-x tubular-campanulate, 8-12 mm. long, 5-dentate, the teeth much shorter 

 than the tube; corolla tubular, 3^.5 cm. long, minutely villosulose, the limb narrow; capsule 

 ovoid, acute, 10-13 mm. long, 4-valved. at the summit; seeds reddish brown, slightly shining, 

 finely favose-reticulate. 



A native of South America, established and spontaneous from central California to Texas, and southward 

 throughout Mexico; mostly in the Lower and Upper Sonoran Zones. Type locality: described from cultivated 

 specimens grown from seed collected at Buenos Aires, Argentina. April-Nov. 



2. Nicotiana trigonophylla Dunal. Desert Tobacco. Fig. 4512. 



Nicotiana trigonophylla Dunal in A. DC. Prod. 13^: 562. 1852. 

 Nicotiana ipomopsifiora Dunal in A. DC. op. cit. 559. 

 Nicotiana multiflora Torr. Pacif. R. Rep. 5: 362. 1856. 

 Nicotiana glandulosa Buckl. Proc. Acad. Phila. 1862: 166. 1863. 



Erect, simple or branched biennial or perennial herb 2-9 dm. tall, glandular-pubescent 

 throughout; lower leaves petiolate, oblanceolate or spatulate, 1-4 cm. wide, 5-15 cm. long, 

 tapering gradually to the more or less winged petiole; upper leaves lanceolate to oblong-ovate, 

 sessile, auriculate, smaller; inflorescence laxly paniculate-racemose; pedicels 5-10 mm. long; 

 calyx campanulate-ovoid, 3-4 mm. wide, 7-10 mm. long, the teeth lance-triangular, 3-5 mm. 

 long, about equaling the mature capsule; corolla white, tubular, 12-18 mm. long, slightly con- 

 stricted at the orifice, the limb 8-10 mm. broad; capsules 2-valved, each valve bilobed at the 

 apex ; seeds numerous, dark reddish brown, somewhat shining. 



Sandy areas and along washes, mostly Lower Sonoran Zone; Mojave and Colorado Deserts to Nevada, Texas, 

 Nayarit, and southern Lower California. Type locality: "In Mexico ad Aguas calientes." Nov. -June. 



3. Nicotiana attenuata Torr. Coyote Tobacco. Fig. 4513. 



Nicotiana attenuata Torr. ex S. Wats. Hot. King Expl. 2/6, pi. 27. 1871. .... 

 Nicotiana Torreyana Nels. & Macbr. Hot. Gaz. 61: 43. 1916. . 



Nicotiana caesia SnVsd. Werdenda 1 : 37. 1927. 



Erect simple or branching annual 3-10 dm. high, glandular-pubescent throughout, or 

 somewhat glabrate in age. Leaves petiolate, the lower 2-5 cm. wide, 8-15 cm. long, ovate to 

 ■broadly lanceolate, the upper narrower and sometimes sessile, mostly acute at both ends ; in- 

 florescence racemose or paniculate-racemose ; calyx ovoi.d-campanulate, 6-8 mm. high at 

 anthesis, pock-marked when mature, the teeth deltoid, subequal, shorter than the tube; corolla 

 narrowly funnelform, white, the tube 2-2.5 cm. long, essentially glabrous except near apex, 

 the limb 8-10 mm. broad; corolla-lobes obtuse, 2-3 mm. long; capsule 8-10 mm. long, 4-valved 

 at the apex; seeds 0.5-0.7 mm. long, Hull. . 



Washes, sandy slopes, roadsides and fields, mostly Arid Transition and Upper Sonoran Zones; rare in the 

 desert, Washington and Idaho to southern California, Arizona, New Mexico, and Texas. Type locality: Carson 

 City, Nevada. May-Nov. 



4. Nicotiana acuminata Hook. var. multiflora Reiche. Many-flowered Tobacco. 



Fig. 4514. 



Nicotiana multiflora VhW. Linnaea 33 : 197. 1864. 



Nicotiana acuminata var. multiflora Reiche, Anal. Univ. Chile 125: 460. 1910. 



•Erect, simple to spreadingly branched herb 5-15 dm. high with ill-smelling, densely glandu- 

 lar-pubescent herbage. Petioles 1-6 cm. long; leaf-blades narrowly ovate-lanceolate to lanceo- 

 late, acute to acuminate, or the upper sometimes attenuate, 0.5-3.5 (rarely 5) cm. broad, 

 5-25 cm. long, obtuse to shallowly subcordate at the base, entire or the margins, slightly 

 undulate; .flowers in loosely branching panicles; calyx 8-12 mm. long, with 5 dark stripes 

 extending from base of calyx to tip of the linear-lanceolate lobes, these unequal, mostly equal- 

 ing to twice as long as the calyx-tube; corollas narrowly tubular, 3-4.5 cm. long, the limb 

 12-22 mm. broad, greenish white, closed during day, the tube proper barely equaling calyx- 

 lobes, considerably narrower than the gradually spreading throat; capsules ovoid, 10-12 mm. 

 high. 



Native in South America but naturalized at numerous localities in California in the central Sierra foothills 

 from Madera County to Eldorado County and in the lower Coast Ranges from Napa County to San Benito and 

 Monterey Counties. Type locality: Choapa, Chile. June-Oct. 



5. Nicotiana Clevelandii A. Gray. Cleveland's Tobacco. Fig. 4515. 



Nicotiana Clevelandii A. Gray, Syn. Fl. N. Amer. 2^: 242. 1878. 



Viscid-pubescent, erect annual 2-6 dm. high, simple to freely branched. Leaves ovate to 

 lanceolate, acute, the lower usually short-petiolate, the upper sessile, 3-8 cm. long, the petioles 

 narrowly winged ; inflorescence racemose, comparatively few-flowered ; calyx campanulate, the 

 tube about 3-4 mm. long, 2-3 mm. wide, the teeth linear, unequal, 1.5-5 mm. long, the longer ex- 

 ceeding the tube; corolla 1.5-2 cm. long, whitish tinged with violet, glabrous or sparsely 



