1156 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves glabrous beneath. 



Corolla tube 2 to 2.5 cm. long 1. S. bella. 



Corolla tube 3 to 5.5 cm. long. 



Corolla tube about 3 cm. long 2. S. bignoniaeflora. 



Corolla tube about 5 cm. long 3. S. insignis. 



Leaves pubescent beneath, at least along the costa. 



Leaves barbate beneath along the costa, elsewhere glabrous or nearly so. 



4. S. palmeri. 

 Leaves pubescent beneath over the whole surface. 



Calyx about 5 mm. long :_5. S. tom.entosa. 



Calyx 12 to 20 mm. long 6. S. mollis. 



1. Stemmadenia bella Miers, Apocyn. S. Amer. 77. 1878. 



Veracruz to Michoacan and Guerrero ; reported from Tabasco ; type from 

 Orizaba, Veracruz. 



Shrub, 2 meters high or more, glabrous throughout ; leaves elliptic-ovate or 

 oblong-elliptic, 7 to 12 cm. long, abruptly acuminate, acute at base; corolla 

 lobes 12 to 15 mm. long. " Lechoso " (Michoacan, Guerrero). 



2. Stemmadenia big'noniaeflora (Sclilecht.) Miers, Apocyn. S. Amer. 77. 1878. 

 Echites hignoniaeflora Schlecht. Linnaea 26: 372. 1853. 



Described from Mexico, the locality not known. 



Glabrous shrub ; leaves lance-elliptic, 10 cm. long, 4.5 cm. wide, acute at 

 each end. on short marginate petioles ; calyx 12 to 14 mm. long. 

 Known to the writer only from description. 



3. Stemmadenia insignis Miers, Apocyn. S. Amer. 76. 1878. 

 Jalisco to Veracruz and Yucattln ; type from M6rida, Yucatan. 



Shrub or small tree, glabrous throughout ; leaves short-petiolate, elliptic to 

 elliptic-oblong or elliptic-obovate, 8 to 18 cm. long, abruptly acuminate, acute 

 at base ; calyx 12 to 15 mm. long ; fruit carpels about 5 cm. long and 3 cm. 

 wide, sharp-pointed. "Laurel" (Yucatiin). 



4. Stemmadenia palmeri Rose & Standi., sp. nov, 



Sinaloa to Chihuahua, Morelos, and Jalisco; type from Imala, Sinaloa 

 {Palmer 1470; U. S. Nat. Herb. no. 305608). 



Shrub or small tree, 1 to 6 meters high, the branchlets glabrous ; leaves on 

 long or short petioles, elliptic or oblong-elliptic, 6 to 18 cm. long, abruptly 

 short-acuminate, acute at base, glabrous above, densely barbate beneath along 

 the costa or in age rarely glabrate ; calyx lobes 4 to 6 mm. long, obtuse or 

 acute, glabrous ; corolla tube 3 to 4.5 cm. long, the lobes of about the same 

 length ; fruit carpels 4.5 cm. long and 3 cm. wide or smaller, falcate-ovoid. 

 " Berraco," " tapaco " (Sinaloa). 



5. SteraLmiadenia tom.entosa Greenm. Proc. Amer. Acad. 35: 310. 1900. 

 Type collected near Zapotlan, Jalisco. 



Shrub, 3 to 4.5 meters high ; leaves short-petiolate, elliptic or oblong-elliptic, 

 acuminate, acute at base, glabrous above, tomentose beneath ; corolla yellow, 

 7.5 to 8 cm. long. 



6. Stemmadenia mollis *Benth. Bot. Voy. Sulph. 125. 1844. 



Guerrero to Chiapas and Veracruz. Guatemala ; type from Guayaquil, 

 Ecuador. 



Shrub or small tree, 3 to 7.5 meters high, the branchlets pubescent ; leaves 

 elliptic-oblong to broadly elliptic, 5 to 17 cm. long, obtuse or abruptly short- 

 acuminate, pubescent on both surfaces; corolla yellow, 7 to 8 cm. long. "Cojon 

 de puerco " (Oaxaca) ; "cojon" (Guatemala, El Salvador); " flor del dia " 

 <E1 Salvador). 



