840 CONTRIBUTIONS FROM THE NATIONAL. HERBARIUM. 



cious, 2 to 4 in a short raceme, the racemes terminal, shorter than the leaves, 

 tomentose; pedicels 6 to 8 mm. long; sepals 3, valvate, ovate, 4 mm. long, 

 tomentose ; petals longer than the sepals, glabrate outside, sericeous-tomentose 

 within ; stamens very numerous. 



Known to the writer only by the original description. 



4. HASSELTIA H. B. K. Nov. Gen. & Sp. 7: 231. 1825. 



One or two other species occur in Central America, and others are found 

 in South America, 



1. Hasseltia mexicana (A. Gray) Standi. 



Banara mexicana A. Gray, Proc. Amer. Acad. 5: 174. 1862. 



Hasseltia pyramidalis Hemsl. Diag. PI. Mex. 4. 1878. 



San Luis Potosf, Veracruz, and Chiapas ; type from Chiapas. Honduras. 



Shrub or small tree, 4 to 6 meters high; leaves petiolate, oblong-lanceolate 

 to oblong-elliptic, 7 to 15 cm. long, abruptly short-acuminate, obtuse at ba.se and 

 with 2 large glands at summit of petiole, remotely serrulate, 3-nerved, glabrous; 

 flowers white, in loose pyramidal terminal panicles ; sepals 4 or 5, tomentulose, 

 about 4 mm. long ; petals 4 or 5, resembling the petals and of thei same length ; 

 fruit subglobose, 5 to 6 mm. long, indehiscent, tomentulose, usually 1-seeded. 



5. LITNANIA Hook. Lond. Journ. Bot. 3: 317. 1844. 

 The other species are West Indian and South American. 



1. Lunania mexicana T. S. Brandeg. Univ. Calif. Publ. Bot. 6: 56. 1914. 



Veracruz and Chiapas ; type from Finca Irlanda, Chiapas. 



Branches slender, flexuous, puberulent at first ; leaves short-petiolate, oblong- 

 lanceolate, 7 to 12 cm. long, cuspidate-acuminate, entire or nearly so, rounded 

 or obtuse at base and 3-nerved, thin, barbate beneath at base, otherwise 

 glabrous ; flowers small, in terminal racemes, these 5 to 10 cm. long ; calyx 

 separating into 2 reflexed segments; petals none; stamens 7 to 9; ovary 

 1-celled, puberulent. 



6. PROCKIA L. Syst. Nat. ed. 10. 1074. 1759. 



1. Prockia crucis L. Syst. Nat. ed. 10. 1074. 1759. 



Sinaloa and Jalisco to Veracruz and Chiapas. West Indies, Central America, 

 and South America. 



Shrub or tree, 3 to 10 meters high ; sepals large and foliaceous ; leaves alter- 

 nate, slender-petiolate, broadly ovate, elliptic, or rounded-ovate, 3 to 12 cm. 

 long or larger, acute or acuminate, serrate, thin, pilosulous or glabrate; pedi- 

 cels slender, terminal, fasciculate or short-racemose ; sepals 3 or 4, valvate, 

 persistent, reflexed, tomentose within ; petals usually abortive or absent ; sta- 

 mens very numerous, yellow; fruit baccate, 3 to 5-celled, subglobose, about 

 mm. in diameter, black at maturity, sparsely pilose. " Huesito " (Colombia) ; 

 " guacimilla," " gu^cima de costa " (Cuba), 



7. MYROXYLON Forst. Char. Gen. PI. 125. 1776. 



Trees or shrubs, armed with long spines, the spines of the trunk commonly 

 branched ; leaves short-petiolate, crenate or serrate, with reticulate venation ; 

 flowers usually dioecious, minute, fasciculate in the axils or short-racemose ; 

 sepals 4 or 5, imbricate ; petals none ; stamens numerous ; fruit baccate, indehis- 

 cent, 2 to 8-seeded. 



It is difficult to find characters by which to separate the species, and it is 

 evident that altogether too many species have been described from Mexico. The 



