STANDLEY TEEES AND SHEUBS OF MEXICO. 1205 



2. Ipomoea murucoides Roem. & Scliult. Syst. Veg. 4: 248. 1819. 

 Convolvulus macranthus H. B. K. Nov. Gen. & Sp. 3: 95. 1819. 



Ipomoea macrantha Don, Hist. Dichl. PL 4: 267. 1838. Not /. macrantha 

 Roem. & Schult. 1819. 



Michoacdn to Oaxaca, Puebla, Mexico, and Quergtaro ; type from Guana- 

 juato. Guatemala. 



Large or small tree, the branchlets densely white-tomentose ; leaves oblong- 

 lanceolate, 7 to 20 cm. long, rounded or obtuse at base, long-acuminate, entire, 

 tomentose or glabrate beneath ; sepals 2 to 2.8 cm. long ; corolla 7 to 8 cm. 

 long. "Palo del muerto " (Mexico, Oaxaca); " micaquahuitl " (Nahuatl) ; 

 *" casahuate," "cazazuate" (Mexico, Oaxaca; from the Nahuatl cuau-sahuatl, 

 "mangy-tree") ; "S.rbol del muerto" (Morelos, Mexico) ; "casahuate prieto" 

 (Morelos) ; " palo bobo " (Morelos, Oaxaca, Quergtaro) ; " palo de ozote," 

 '' ozote " (Oaxaca) ; "cazahuate bianco," " S,rbol del venado " (Seler) ; " siete 

 camisas," "siete pellejos," "tutumuste" (Guatemala, Pittier). 



The vernacular names doubtless apply also to the related species. A de- 

 coction of the wood is employed locally in the form of baths as a remedy for 

 paralysis. The juice is milky. The ashes are employed in Guatemala as a 

 substitute for soap in washing clothes. The fallen flowers are eaten by deer. 



3. Ipomoea arborescens (Humb. & Bonpl.) Don, Hist. Dichl. PI. 4: 267. 1838. 

 Convolvulus arborescens Humb. & Bonpl. ; Willd. Enum. PI. 1 : 204. 1809. 

 Argyreia ohlonga Benth. Bot. Voy. Sulph. 138. 1844. 



Convolvulus guahutzehuatl Sess6 & Moc. PI. Nov. Hisp. 23. 1887. 



Ipomoea murucoides glatrata Rose, Contr. U. S. Nat. Herb. 1: 107. 1891. 



Sonora, Sinaloa, Morelos, and Veracruz. El Salvador. 



Large tree with smooth white bark ; leaves 8 to 18 cm. long, obtuse or acute ; 

 sepals 6 to 10 mm. long, pubescent on both sides ; corolla about 5 cm. long ; 

 seeds black. "Palo bianco" (Sonora, Sinaloa); "palo del muerto," "casa- 

 huate," " quauhzahuatl," "casahuate bianco" (Morelos); "palo santo " (So- 

 nora) ; "palo bobo" (Morelos, El Salvador) ; "tutumushte," "siete pellejos," 

 "siete camisas" (El Salvador). 



When in flower the tree is a very showy one. It blooms when leafless. In 

 some localities it forms extensive forests known as " casahuateras." In Mo- 

 relos there is a popular belief that the tree causes imbecility and other cerebral 

 affections, and for this it is necessary only to drink the water running at the 

 foot of the trees. It is reputed also to be poisonous to horses and cattle. In 

 Sinaloa the bark is used as a remedy for bites of rattlesnakes and other 

 poisonous animals, and for diseases of the spleen. 



4. Ipomoea cuemavacensis House, Bot. Gaz. 43: 410. 1907. 



Convolvulus arboreus Sesse & Moc. PI. Nov. Hisp. 23. 1887. Not C. arboreus 



Balb. 1841. 

 Type from Cuernavaca. 



Similar to /. arborescens; leaves 10 to 16 cm. long, acuminate. 

 Probably only a variant of /. arborescens. 



5. Ipomoea intrapilosa Rose, Gard. & For. 7: 367. 1894. 



Ipomoea murucoides glabrata A. Gray, Proc. Amer. Acad. 22: 440. 1887. 



Sonora to Oaxaca, Morelos, Zacatecas, and Durango ; type from Chapala. 

 Jalisco. 



Large or small tree, nearly glabrous ; leaves linear-lanceolate to ovate, 5 to 

 25 cm. long, acute to attenuate, obtuse to truncate at base ; corolla 4 to 5 cm, 

 long, the limb 7 to 8 cm. broad. " Cazahuate bianco " (Jalisco) ; " palo bianco " 

 <Durango) ; "palo bobo," " zozote " (Jalisco) ; " pajaro bobo" (Oaxaca). 



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