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ar"bol de tabaco lengiia de uuey tebaco cimarron 
"buena moza marihuana tabacon 
coneton Marquianfe. tabaquillo 
Don Juan moataza moiitie^ tacote 
gigante palft -^irgen tepoze^.! extranjero 
gretana palo virgin tronadora 
^ hierba del gigante tataco ainarillo virginio 
This plant is abuj^dant in some parts of Llexico. It is reputed to be 
very poisonous. The leaves are often applied as poultices to relieve 
pain, especially hca-dache. 
An interesting report on H icotiana glauca , growing in the lo'.rer Hio 
Grande Valley of Texas and Mexico, was submitted by Bibby and Higdon (ll) 
of the Sureau of Entomology and Plant Q,uarantine in January 1940. The 
;i|lant is imown by severaJ cosmon names, including the following: Arbol 
de tabaco, lingua de vaca, lingua de buey, mostazo monte, quebradora, 
sacred mustard, tabaco amarillo, tabaco cimarron, tabaquillo , tree to- 
bacco, and tronadora. 
Nicotiana glauca gro-^s on Trell-drained sandy waste land along or 
near irrigation canals and usually in colonies. It is a fast growing 
plant; one tree 4 inches in dj ameter and 25 feet tall was only 18 rao»ths 
old. Sprouts from stumps apparently mrJce an extrenely rapid and succulent 
growth, bearing leaves much larger than those on t}ie older plants. 
In January 1940 temperatures as low as 29° F. were recorded at 
Brownsville, Tex., but apparently only yoting seedlings and young sprouts 
were injured by the freeze. In fact, many older plants bore fresh blooms, 
apparently uninjured. 
Bibby and Higdon were informed by Ing. Tomas Leal Moreno of the 
Mexican Department of Agriculture that some Mexicans believe that plants 
of Nicotiana glauca will rid premises of fleas. 
It is concluded that Hicotiana glauca could be grown commercially 
in the lower Eio Grande Valley. 
Clayton and Foster (l7) in 1940 reported on disease resistance in 
the genus i'icotiana . H. glauca (n=12) is immune from black root rot 
( Thielaviopsis a as i cola ) and highly/ resistant to mosaic, root Imot 
( Heterodera marioni ), and wildfire (Bacterium tabacun ) . Smith's allo- 
polyploid (N. tabacum + iJ . glauca , n=35) shows resistance to root loiot 
and root rot. 
Schmuck (128) in 1937 reported on the chemical composition of 
alkaloids in inter-species liybridization of plants of the genus 
Nicotiana . N. glauca contains anabasine; N. sylvestris and N. rusbyi 
probably contain nornicotine; and ll^. tabacum , alata, rustica and 
langsdorffii contain nicotine. The alkaloids from plants of the first 
generation of hybrids (N. tabacum x 'S_. glauca) consisted of anabasine 
only, and the content of this was always considerably higher than in the 
original parent plant (N. glauca ) . 
