1082 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves deeply lobed or digitately compound. 



Leaves deeply lobed 5. O. salvinii. 



Leaves digitately compound. 

 Leaflets sessile; bractlets densely pale-tomentose with long soft hairs, 

 concealing the flowers ; leaflets 4.5 to 12 cm. wide, covered with 



stalked stellate hairs 6. O. echinops. 



Leaflets petiolulate ; bractlets glabrate or puberulent, not concealing the 

 flowers ; leaflets mostly 2.5 to 4.5 cm. wide, rarely wider, glabrous, 

 or the pubescence of the upper surface, at least, of sessile stellate 

 hairs. 

 Leaflets densely stellate-pubescent beneath, the hairs stalked. 



7. O. langlassei. 



Leaflets glabrous beneath, or the pubescence of minute sessile stellate 



hairs 8> O. xalapense. 



1. Oreopanax platjrphyllum Marchal, Bull. Acad. Brux. II. 47: 88. 1879. 

 Type from Jocotepec (Oaxaca ?). 



Plants glabrous throughout ; leaves long-petiolate, suborbicular or rounded- 

 ovate, 10 to 20 cm. wide, with 2 or 3 triangular teeth or entire, thin ; panicles 

 8 to 12 cm. long, the heads 1 cm. in diameter, the pistillate ones 5 to 8-flowered ; 

 fruit 7-sulcate. 



2. Oreopanax liebmanni Marchal, Bull. Acad. Brux. II. 47: 87. 1879. 

 Veracruz and probably elsewhere; type from "Alpatlahua." Guatemala. 

 Plants glabrous throughout ; leaves long-petiolate, elliptic or elliptic-oblong, 



10 to 18 cm. long, 4 to 8 cm. wide, abruptly acuminate, cuneate or obtuse at 

 base, entire, coriaceous ; panicles 8 to 20 cm. long ; fruit 5-seeded. 



3. Oreopanax capitatum (Jacq.) Planch. & Decaisne, Rev. Hort. 1854: 108. 



1854. 



Aralia capitata Jacq. Stirp. Amer. 89. pi. 61. 1763. 



Veracruz. West Indies; Central and South America. 



Shrub, usually epiphytic, sparsely puberulent in the inflorescence, otherwise 

 glabrous; leaves ovate, elliptic, or rounded, 10 to 25 cm. long or larger, acute 

 to rounded at apex and abruptly short-acuminate, obtuse to subcordate at 

 base, coriaceous; panicles 10 to 30 cm. long, the staminate heads about 5 mm. 

 in diameter ; fruit 4 to 6 mm. in diameter. 



4. Oreopanax flaccidum, Marchal, Bull. Acad. Brux. II. 47: 84. 1879. 



Veracruz and Puebla, and perhaps elsewhere; type from Huitamalco. 



Tree; leaves long-petiolate, ovate or ovate-elliptic, 13 to 30 cm. long, short- 

 acuminate, rounded or obtuse at base, entire, coarsely stellate-pubescent or 

 finally glabrate; panicles large, the heads numerous; fruit about 5 mm. in 

 diameter. 



5. Oreopanax salvinii Hemsl. Diag. PI. Mex. 16. 1878. 

 Oreopanax jaliscanum S. Wats. Proc. Amer. Acad. 25: 151. 1890. 

 Aralia lobata Sesse & Moc. Fl. Mex. 86. 1894. 



Sonora to Oaxaca and Puebla. Guatemala; type from VolcSn de Fuego. 



Tree, 12 meters high or less ; leaves long-petiolate. 15 to 50 cm. wide, deeply 

 cordate at base, deeply 5 or 7-lobate, the lobes broad or narrow, obtuse to 

 acuminate, sinuate-lobate, when young densely stellate-tomentose beneath but 

 in age often glabrous ; panicles very large, the heads small, numerous, long- 

 stalked ; fruit black, 2-celled, about 6 mm. in diameter. " Mano de le6n " 

 (Sinaloa). 



The leaves vary greatly in shape and pubescence, but there is no ap- 

 parent reason for recognizing more than a single species. 



