STANDLEY — TREES AND SHRUBS OF MEXICO. 149 



Leaves 11 to 12 cm. long, 4.5 to 6 cm. wide. 

 Leaves puberulent beneath, 7-nerved, rounded or cordate at the base. 



58. P. medium. 

 Leaves glabrous, 5-nerved, acute at the base 59. P. uhdei. 



1. Piper cuemavacanum. ^ C. DC. Linnaea 37: 363. 1873. 

 Known only from the type locality, Cuernavaca, Morelos. 



Branehlets velutinous-puberulent ; leaves long-petiolate, the blades ovate- 

 rounded, peltate, 18 cm. long, 21 cm. wide, acute at the apex, deeply cordate at 

 the apex. 



2. Piper cordillerianum C. DC. in DC. Prodr. 16' : 332. 1869. 

 Cordillera of Veracruz, at 1,050 metei-s. Guatemala. 



Leaves long-petiolate, the blades reniform-orbicular, 21 cm. long, 80 cm. wide, 

 short-acuminate at the apex, deeply cordate at the base. 



3. Piper umbellatum L. Sp. PI. 30. 1753. 

 Heckeria tonbellata Kunth, Linnaea 13: 569. 1839. 



Veracruz to Colima and southward. Central America, "West Indies, and 

 South America ; type from Santo Domingo. 



Shrub, 1 to 2.5 meters high ; leaves long-petiolate, the blades round-reniform, 

 17 to 18 cm. long, 22 to 23 cm. wide, attenuate-acute at the apex, deeply cordate 

 at the base. " Mano de zopilote " (Tabasco) ; " santilla de culebra " (Oaxaca, 

 Reko) ; " baquiila," or " basquina " (Porto Rico). 



4. Piper muelleri " C. DC. in DC. Prodr. 16': 243. 1869. 

 Veracruz ; type from Orizaba. Honduras. 



Branches glabrous, or when young densely hirtellous ; leaves short-petiolate, 

 the blades ovate-acuminate, 12.5 cm. long, 4.5 cm. wide, 7-ijerved, rounded at 

 the base. 



5. Piper yucatanense C. DC. Linnaea 37: 334. 1873. 

 Forests of Yucatan. 



Branehlets glabrous ; leaves nearly sessile, the petioles about 3 mm. long, 

 the blades ovate-acuminate, 12 cm. long, 6.5 cm. wide, rounded at the base, 

 7-nerved. 



6. Piper neesianum C. DC. in DC. Prodr. 16': 256. 1869. 

 Veracruz. Nicaragua. 



Branehlets glabrous ; petioles 5 to 10 mm. long ; leaf blades lanceolate or 

 elliptic-lanceolate, 6 to 8.5 cm. long, 2 to 4 cm. wide, acuminate, acute at the 

 base. 



7. Piper disjunctum C. DC. Linnaea 37: 334. 1873. 



Oaxaca and Veracruz; type collected between Huatusco and .lalapa, Veracruz. 

 Branehlets glabrous ; petioles 6 mm. long ; leaf blades ovate-lanceolate, 8 to 

 10 cm. long, 2.5 to 3 cm. wide, long-acuminate, acute or obtuse at the base. 



8. Piper diandrum C. DC. Linnaea 37: 364. 1873. 



Veracruz to Michoacan ; type from Pital, Veracruz. Guatemala. 



Shrub, 3 to 3.5 meters high ; branehlets glabrous ; petioles 1.5 to 2.5 cm. long ; 

 leaf blades ovate, 11 to 15 cm. long, 5.2 to 11 cm. wide, rounded, truncate, or 

 cordate at the base. 



' Mis.spelled " Cnemavacanum " in the original description. 



" Frederick Mueller was an Alsatian, who was sent to Mexico in 185^ by 

 Schlumberger of Mulhouse. He collected chiefly between Veracruz and Ori- 

 zaba. He disappeared suddenly and was never heard of afterwards, and it is 

 presumed that he was murdered. 



