378 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Hibiscus elatus Sw. Fl. Ind. Occ. ii, 1218. Xhol6. 



Hacienda Guayalu, cult? Sept. ig, 1865 (Schott, 629}. 



Hibiscus mutabilis Linn. Sp. PI. 977. Flor de Cortejo. 



Cultivated at Merida, Feb. 16, 1866 (Schott, 744). 



HIBISCUS TUBIFLORUS Moc. & Sesse, de C. Prod. i. 447. 



Tunkas, 3 to 4 feet high, flowers rose-red, March 3, 1890 (Stone, 

 257], in Herb. Acad. Sci. Phila. ). 



Malachra capitata Linn. Syst. ed. xii. 458. 



At the Aguada de Uxmal, Sept. 17, 1865 (Schott, S8j). 



Malvastrum tricuspidatum A. Gray, PI. Wright i. 16. Malva. 

 M. Coromandelianum Garcke. "Shrubby, 4 feet high, abundant 

 in old fields near Izamal, October" (1020). Our plant agrees 

 with that of P. Sintenis from Porto Rico. 



MALVAVISCUS ARBOREUS Cav. Diss. t. 48. 



Two quite distinct forms of this species are found in our 

 region : The one with small obtuse slightly and irregularly 

 crenate leaves (^ to i% inch long by ^ to ^ inch broad), col- 

 lected only along the coast. (Gaumer, Silam, April, 1895, Schott 

 Downs at Progreso, April, 1865, 271); the other with large acute 

 crenate leaves (i to 3 inches long by ^ to 2 inches broad), found 

 inland (Gaumer 580, Millspaugh, Armour Exped. 60, Schott. 

 Merida, Jan. 1865, //// and Ruins of Uxmal, Sept. 15, 1865, 

 643}. The leaves of the form from the coast have a few scat- 

 tered pilose hairs beneath, those of the inland form scattered 

 stellate hairs, while in the specimens from the more humid and 

 higher region of Uxmal the leaves are densely woolly. 



SIDA ACUTA CARPINIFOLIA (L.f) K. Schum Fl. Braz. Fasc. cix. 326. 



" Herb 4 feet high, frequent in brushlands about Izamal (902); 

 and in the forests about Buena Vista Xbac, April " (1054). Tekanto 

 common, Feb. 27, 1890 (Stone, 194, in Herb. Acad. Sci. Phila.). 



Sida anomala St. Hil. Fl. Bras. Mer., i. 177. 



Merida, Sept. 25, 1865 (Schott, 116, in Herb. U. S. Natl. Mus.). 



SIDA SUPINA PILOSA (Cav.). 



S. pilosa Cav. Diss. i. 9. t. 8. Tekanto, Feb. 27, 1890 (Stone, 

 196, in Herb. Acad. Sci. Phila.). 



Wissadula mucronulata A. Gray, Bot Mex. Bound 39. Ounikax. 

 "Herb 5 feet high, common in old fields about Izamal, Octo- 

 ber" (968). Our plants agree with Pringle 4603 Jalisco, Mex., 

 which have, however, a much lighter upper surface to the leaves. 



Wissadula tricarpellata Robn. & Greenm. 



"Herb 2 feet high, common in open lands at Buena Vista 

 Xbac, April" (1056). 



