STANDLEY — TREES AND SHRUBS OF MEXICO. 755 



31. Abutilon giganteum (Jacq.) Presl, Rel. Haenk. 2: 116. 1836. 

 Sida gigantea Jacq. PI. Hort. Sehonbr. 2: 8. pi. llfl. 1797. 



Sida elata Macfad. Fl. Jam. 87. 1837. 



1 Ahutilon mexicanum Presl, Rel. Haenk. 2: 115. 1836. 



Abutilon divaricatum Turcz. Bull. Soc. Nat. Moscon 31': 204. 1859. 



Abutilon datum Griseb. Fl. Brit. W. Ind. 79. 1859. 



Veracruz and Guerrero. West Indies, Central America, and South America. 



Shrub, 1 to 2 meters high; leaves broadly cordate, 6 to 18 cm. long, acute to 

 long-acuminate, crenate or dentate, densely stellate-velutinous beneath; petals 

 yellow, 1 to 1,5 cm. long ; carpels 12 mm. long, stellate-pilose. 



32. Abutilon umbellatum (L.) Sweet, Hort. Brit 53. 1826. 

 Sida umbellata L. Syst. Nat. ed. 10. 2: 1145. 1759. 



Jalisco to Oaxaca, and doubtless elsewhere; Yucatan (?). West Indies and 

 South America. 



Leaves broadly cordate, 4 to 9 cm. long, obtuse or acute, crenate or dentate, 

 green, thinly stellate-pubescent beneath; petals yellow, about 1 cm. long; 

 carpels stellate-hirsute, long-beaked. 



33. Abutilon hemsleyanum Rose, Contr. U. S. Nat. Herb. 10: 123. 1906. 

 Abutilon sidoides Hemsl. Diag. PI. Mex. 24, 1879. Not A. aidoides Dalz. & 



Gibs. 1861. 



Jalisco to San Luis Potosi, Mexico, and Oaxaca; type from the region of 

 San Luis Potosf. 



Stems 1 to 1.5 meters high, stellate-pubescent ; leaves lance-ovate to broadly 

 ovate, 5 to 14 cm. long, acute to long-acuminate, crenate or dentate, green be- 

 neath but rather densely stellate-pubescent; sepals broadly ovate, acuminate; 

 petals 8 to 10 mm. long ; carpels hispid-stellate, with very long beaks. 



Probably not sufficiently distinct from A. umbellatum. 



34. Abutilon palmeri A. Gray, Proc. Amer. Acad. 8: 289. 1870. 



Abutilon macdongalii Rose & Standi. Contr. U. S. Nat. Herb. 16: 13. pi. 4. 1912. 



Baja California and Sonora ; type from Sonora. 



Stems hirsute and villosulous and somewhat viscid; leaves broadly cordate, 

 4 to 10 cm. long, acute or acuminate, coarsely dentate, often shallowly trilobate, 

 densely stellate-velutinous ; sepals ovate, cuspidate-acuminate, long-pilose ; car- 

 pels densely soft-pilose. 



35. Abutilon aurantiacum S. Wats. Proc. Amer. Acad. 20: 357. 1885. 

 Baja California ; type from BaMa de Todos Santos. 



Leaves rounded-cordate, 3 to 13 cm. long, obtuse or acute, dentate and often 

 shallowly trilobate, densely stellate-velutinous ; calyx lobes broadly ovate, acute, 

 pilose ; petals orange ; carpels about 10, 8 mm. long, pilose. 



36. Abutilon holwayi Rose, Contr. U, S. Nat. Herb. 8: 318. 1905. 



Abutilon dnrangense Rose & York, Contr. U. S. Nat. Herb. 10: 123. pi. 40. 1906. 



Durango to Quer^taro and Oaxaca ; type from Oaxaca. 



Stems viscid-pubescent ; leaves ovate-cordate, 4 to 12 cm. long, acute or acumi- 

 nate, crenate or subentire, densely stellate-tomentose beneath ; sepals broadly 

 ovate, acuminate ; petals 1.5 cm. long or less. 



37. Abutilon dentatum Rose, Contr. U. S. Nat. Herb. 8: 318. 1905, 

 Known only from the type locality, near the city of Chihuahua, 



Leaves ovate-cordate, 6 to 10 cm. long, acuminate, dentate, densely stellate- 

 tomentose beneath ; sepals broadly ovate, cuspidate-acuminate. 



