706 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



9. NEOPRINGLEA " S. Wats. Proc. Amer. Acad. 26: 134. 1891. 



Shrubs or small trees ; leaves alternate, petiolate, entire or crenulate ; stipules 

 setaceous, deciduous; flowers dioecious, fasciculate and racemose, greenish; 

 staminate flowers with 4 orbicular petals; stamens 12, in 3's opposite the 

 petals; pistillate flowers apetalous; fruit 3-winged, 1-celled, 1-seeded. 



The genus has been placed by some authors in the Celastraceae and by 

 others in the Sapindaceae. Its proper position is doubtful. 



Leaves conspicuously crenate-serrate, long-acuminate, soon glabrate beneath. 



1. N. viscosa. 

 Leaves entire or nearly so, obtuse or acute, densely pubescent beneath. 



2. N. integrifolia. 



1. Neopringlea viscosa (Liebm.) Rose, Contr, U. S. Nat. Herb. 12: 282. 1909. 

 Llavea viscosa Liebm. Nat. For. Kjobenhavn Vid. Medd. 1853: 96. 1854. 

 Dry hillsides, Puebla and Oaxaca. 



Shrub, 3 to 4.5 meters high; leaves lanceolate, ovate, or elliptic, 3 to 7 cm. 

 long, thinly pilose when young; staminate inflorescence equaling or shorter 

 than the leaves ; pistillate flowers fasciculate ; fruit about 7 mm. long, glabrous, 

 emarginate at apex. 



2. Neopringlea integrifolia (Hemsl.) S. Wats. Proc. Amer. Acad. 26: 135. 1891. 

 Llavea integrifoUa Hemsl. Diag. PI. Mex. 6. 1878. 



Coahuila to San Luis PotosI, QuerStaro, and Hidalgo; type from Zimapan, 

 Hidalgo. 



Shrub or small tree, 1.5 to 6 meters high; leaves oblong or lance-oblong, 2 

 to 6 cm. long, pubescent on both surfaces, more densely so beneath; fruit 

 glabrous, 7 to 9 mm. long. " Corba-gallina " (Tamaulipas, Palmer). 



10. EXOTHEA Macfad. Fl. Jam. 1: 282. 1837. 



1. Exothea copalillo (Schlecht.) Radlk. in Engl. & Prantl. Pflanzenfam. 3": 

 358. 1895. 



Cyrtocarpa copalillo Schlecht. Linnaea 16: 485. 1842. 



San Luis Potosf and Veracruz. 



Small tree; leaves persistent; leaflets usually 4, oblong or elliptic-oblong, 6 

 to 13 cm. long, obtuse, barbate beneath in the axils of the nerves, otherwise 

 glabrous ; flowers polygamous, tomentulose, in terminal and lateral panicles ; 

 sepals 5; petals 5, 3 mm. long; stamens 8. "Copalillo" (Veracruz). 



Only one other species is known, E. paniculata (Juss.) Radlk., the inkwood, 

 which occurs in Florida, the West Indies, and Guatemala. E. copalillo is 

 closely related and may not be distinct from that species. 



11. OUPANIA L. Sp. PI. 200. 1753. 



Erect shrubs or trees ; leaves alternate, even-pinnate or simple ; flowers poly- 

 gamo-dioecious, racemose or paniculate, white or greenish ; sepals 5 ; petals 5 ; 



^The genus is named in honor of Cyi-us G. Pringle (1838-1911), a native of 

 Vermont, perhaps the best-known and most industrious of North American 

 botanical collectors. It has been estimated that during his 35 years of field 

 work he distributed to the herbaria of the world over 500,000 specimens, rep- 

 resenting 20,000 species, 12 per cent of which were new to science. His work 

 in Mexico began in 1882 and extended nearly to the time of his death, during 

 which period he visited repeatedly nearly all States of the Republic. The 

 specimens he prepared are noted for their superior quality, and are un- 

 equaled, probably, by those of any other collector. 



