STANDLEY TREES AND SHRUBS OF MEXICO. 259 



14. Iresine scliafEneri S. Wats. Proc. Aiiier. Acad. 21: 437. 1886. 



Dry rocky hillsides, Cliiliuahua to San Luis Potosi, and Hidalgo ; type from 

 San Luis Potosi. 



Erect shrub, 1 meter higli or less ; leaves ovate or lanceolate, 2 to 9 cm. long. 

 " Tlatlon " ( Queretaro ) . 



15. Iresine cassiniaeformis Schauer, Liunaea 19: 708. 1847. 

 Tamaulipas and San Luis Potosi. 



Erect shrub, 1 to 1.5 meters high ; leaves mostly ovate, acute or obtuse. 



16. Iresine discolor Greenm. PrO(?. Amer. Acad. 33: 477. 1898. 

 Puebla and Oaxaca ; type from Santa Catarina Canyon, Oaxaca. 



Erect shrub with slender branches; leaves oval, ovate, or oblong, 2 to 7 cm. 

 long. 



17. Iresine grandis Standi. N. Amer. Fl. 21:16.3. 1917. 



Jalisco to San Luis Potosi, Veracruz. Mexico, and Miclioacan ; type from I.,as 

 Canoas, San Luis Poto-i. Guatemala. 



Shrub, 1.5 to 3 meters high ; leaves ovate. 6 to 13 cm. long. 



18. Iresine calea (Ibanez) Standi. Contr. U. S. Nat. Herb. 18:94. 1916. 

 Gomplirvna hitifolin Mart. & Gal. Bull. Acad. Brux. 10': 349. 1843. 

 Achyranthes calca Ibafuz. Nuturaleza 4:79. 1879. 



Iresbw latifoUa Benth. & Hook. Gen. PL 3: 42. 1880. Not /. laUfoUa D. Dietr. 

 1839. 



Hebanthe inollis Hemsl. Biol. Centr. Amer. Bot. 3:20. 1S82. 



Iresine laxa S. Wats. Proc. Amer. Acad. 21: 454. 1886. 



Baja California to Coahulla, Tamaulipas, and Chiapas ; type from Puebla. 

 Central America. 



Erect shrub, 1.5 to 6.5 meters high ; leaves ovate, 4 t^ 10 cm. long. " Tepozan " 

 (Tamaulipas) ; " amargosillo " (Michoacan, Guerrero) ; "pie de paolma " (VaU 

 ley of Mexico, Ramirez) ; " tlatlancnaya," " hierba del tabardillo," " hierba de la 

 calentura " (Puebla) ; " mosquitero " (El Salvador). Robelo gives one of the 

 Mexican names as " clacancauayo " derived from the Nahuatl tlatiancua-ye, 

 " which has knees," referring to the jointed stems. 



Reputed to have diuretic and diaphoretic properties ; decoction of the plant 

 used in Puebla in the treatment of fevers. 



34. ALLIONIACEAE. Four-o'clock Family. 



Referknce: Standley, AUioniaceae, N. Amer. Fl. 21:171-254. 1918. 



Shurbs or trees, sometimes scandent ; leaves opposite (in the genera listed 

 here), entire; flowers small and usually inconspicuous; corolla none. 



Many herbaceous representatives of the family occur in Mexico. Bougain- 

 villea spectabilis Willd., a native of Brazil, is a favorite ornamental plant in 

 Mexico. It is a tall spiny climber with alternate leaves, the small flowers being 

 borne on large, showy, purplish red bract.s. It is known in Mexico by the fol- 

 lowing names: "Azalea de guia," " bugambilla," " bugevilla," "bombilla," 

 " bugavilea," " hernandiaz^a," " camelina." Another well-known cultivated 

 plant of the family is the four-o'clock, Mirabilis jalajm L., known in Mexico as 

 " arrebolera," " maravilla," " Don Diego de noche," and " trompetilla." 

 Fruit bearing short-stalked glands. 



Plants armed with spines; flowers in cymes 3. PISONIA. 



Plants unarmed ; flowers in umbels. 



Plants erect; stamens 6 to 11 4. PISONIELLA. 



Plants scandent or trailing; stamens 2 to 5 5. COMMICABPUS. 



