754 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



23. Abutilon sonorae A. Gray, PI. Wright. 2 : 23. 1853. 



Chihuahua and Sonora to Guerrero; type collected on the Sonoita, Sonora. 



Stems 1 meter high or less, chiefly herbaceous, puberulent and long-pilose; 

 leaves rounded-cordate, 7 to 18 cm. long, acuminate, usually subtrilobate, 

 irregularly dentate, whitish-tomentose beneath ; sepals broadly ovate, acute ; 

 petals yellow, about 6 mm. long; carpels 7 to 11, 8 to 10 mm. long, stellate- 

 pubescent. 



24. Abutilon discolor Baker f. Journ. Bot. Brit. & For. 31 : 73. 1893. 

 San Luis PotosI and Tamaulipas (?) ; type from Tula, Tamaulipas (?). 

 Stems reddish or yellowish-pubescent; leaves acuminate, 4 to 10 cm. long, 



entire or nearly so, stellate-pubescent beneath ; sepals lance-ovate to broadly 

 ovate, acuminate ; carpels reniform, stellate-hirsute. 



25. Abutilon reventum S. Wats. Proc. Amer. Acad. 21: 418. 1886. 

 Chihuahua and Sonora to Oaxaca, Quer^taro, and Zacatecas; type from 



Hacienda San Jose, Chihuahua. Southern Arizona. 



Leaves broadly cordate or reniform-cordate, 6 to 25 cm. long, abruptly acu- 

 minate, sometimes shallowly trilobate, irregularly crenate or subentire, white 

 beneath with a velutinous tomentum; petals deep orange, 10 to 12 mm. long; 

 carpels about 8, 7 to 10 mm. long, stellate-pilosulous. 



26. Abutilon andrieuxii Hemsl. Diag. PI. Mex. 24. 1879. 

 Abutilon reticulatum Rose, Contr. U. S. Nat. Herb. 5: 171. 1899. 

 Tepic to Oaxaca and Puebla ; type from Tlacolula, Oaxaca. 



Shrub, 1 to 4.5 meters high ; leaves rounded-cordate, 4 to 22 cm. long, acute 

 or abruptly short-acuminate, sometimes shallowly trilobate, obscurely crenate 

 or subentire, covered beneath with a fine whitish stellate tomentum ; petals 

 yellow, 12 to 15 mm. long; carpels 8 or 9, stellate-pilose, 1 cm. long. 



27. Abutilon xanti A. Gray, Proc. Amer. Acad. 22: 301. 1887. 

 Southern Baja California ; type from Cape San Lucas. 



Shrub, 1 to 3.5 meters high ; leaves rounded-cordate, 8 to 20 cm. long, short- 

 acuminate, often shallowly trilobate, irregularly dentate or subentire, whitish 

 beneath with a velutinous tomentum ; petals 8 mm. long, pale yellow ; carpels 

 1 cm. long, stellate-pilose. 



28. Abutilon thurberi A. Gray, Mem. Amer. Acad. n. ser. 5: 307. 1854. 

 Type from Magdalena, Sonora. 



Stems 30 to 60 cm. high ; leaves ovate-cordate, 5 cm. long or less, green, 

 thinly stellate-pubescent, serrate; calyx hirsute; petals orange-yellow; carpels 

 sparsely hirsute. 



29. Abutilon membranaceum Baker f. Contr. U. S. Nat. Herb. 3: 312. 1895. 

 Known only from the type locality, Tepic. 



Stems slender, suffrutescent, sparsely pubescent; leaves broadly ovate, 5 to 

 12 cm. long, cuspidate-acuminate, rounded or subcordate at base, very thin, 

 coarsely crenate-dentate, green and very sparsely stellate-pubescent; sepals 

 ovate, acuminate ; carpels stellate-hirtellous, 8 mm. long. 



30. Abutilon ellipticum Schlecht. Linnaea 11: 368. 1837. 



Abutilon attenuatuni Robins. & Seat. Proc. Amer. Acad. 28: 104. 1893. 



Jalisco, Michoacfin, and Hidalgo ; type from Tlalpujahua, MichoacS.n. 



Slender shrub ; leaves 4 to 7 cm. long, obtuse to long-acuminate, sometimes 

 shallowly trilobate, crenate or serrate, green above, paler beneath and stellate- 

 tomentose; sepals broadly ovate, cuspidate-acuminate; petals 8 to 10 mm. 

 long; carpels 1 cm. long, stellate-hirsute, very long-beaked. 



Abutilon erosiim Schlecht.' is perhaps the same species. 



* Linnaea 11: 367. 1837. 



