STANDLEY TREES AND SHRUBS OF MEXICO. 815 



Leaves serrulate. 

 Leaves without tufts of hairs beneath in the axils of the nerves; pani- 

 cles nearly or quite as long as the leaves. 



Leaves pale beneath, stellate-tomentose 8. S. nelsoni. 



Leaves green beneath, thinly stellate-pilose. 

 Hairs of the petioles mostly 3 to 4 mm. long ; leaves mostly 8 to 14 



cm. wide 9. S. villosa. 



Hairs of the petioles about 1 mm. long ; leaves mostly 6 to 7 cm. 



wide 10. S. scabrida. 



Leaves with dense tufts of whitish hairs beneath in the axils of the 

 nerves ; panicles usually much shorter than the leaves. 

 Flowers 22 to 30 mm. broad. 



Panicles 4 to 7 cm. long ; flowers 25 to 30 mm. broad. 



11. S. latipetala. 

 Panicles 10 to 15 cm. long ; flow^ers about 22 mm. broad. 



12. S. pauciflora. 

 Flowers 10 to 16 mm. broad. 



Hairs of the petioles appressed 13. S. pringlei. 



Hairs of the petioles spreading. 



Sepals glabrous on the outer surface, ciliate 14. S. willdemanni. 



Sepals covered with short stellate setae 15. S. buscalioniana. 



1. Saurauia conzattii Buscalloni, Malpighia 25:403. pi. 6, f. 9. 1913. 

 Known only from the type locality, Cerro de la Raya, Cuyamecalco, Dis- 



trito de Cuicatliin, Oaxaca, altitude 2,800 meters. 



Branchlets densely setose; leaves oblong-obovate, 12 to 18 cm. long, abruptly 

 short-acuminate, cuneate at base, serrulate, green, yellowish-setose ; panicles 

 few-flowered, half as long as the leaves ; flowers 2.3 to 2.5 cm. broad ; sepals 

 densely setose ; stamens 10 ; ovary glabrous. 



2. Saurauia pseudopeduncularis Buscalioni, Malpighia 26: 30. pL 7, f. 13. 1913. 



Known only from the type locality. Sierra de San Pedro Nolasco, Oaxaca. 



Branchlets setose; leaves short-petiolate, the petiole villous, the blade ovate- 

 lanceolate or obovate, 12 to 19 cm. long, acute, at base acute or subobtuse, 

 serrulate, yellowish-setose ; panicles few-flowered, equaling or shorter than 

 the leaves ; flowers 1.2 to 1.5 cm. broad ; sepals setose ; stamens 25 to 30 ; ovary 

 glabrous. 



3. Saurauia leucocarpa Schlecht. Linnaea 10: 249. 1836. 

 Saurauia angustifolia Turcz. Bull. Soc. Nat. Moscou 31^: 242. 1858. 

 Michoacan and Guerrero to Veracruz and Oaxaca ; type from Cuesta Grande 



de Chiconquiaco, Veracruz. Guatemala. 



Tree, 5 to 6 meters high, the branchlets tuberculate-scabrous ; leaves nar- 

 rowly oblong-oblanceolate, 9 to 15 cm. long, acute, cuneate at base, obscurely 

 serrulate, nearly glabrous; panicles equaling or shorter than the leaves; sepals 

 usually glabrous. 



4. Saurauia barbigera Hook. Icon. PI. pi. SSI. 1840. 

 Veracruz. 



Shrub or small tree, 4.5 meters high, the branchlets appressed-setose ; leaves 

 oblong-oblanceolate, 4 to 11 cm. long, acute or acuminate, cuneate at base, 

 serrate, sparsely setose above, green ; panicles few-flowered, the flowers 12 mm. 

 broad ; sepals glabrous. 



5. Saurauia serrata DC. Mem. Soc. Phys. Hist. Nat. Gen&ve 1: 420. pi. 3. 1822. 

 Sauratda pedunculata Hook. Icon. PI. pi. 331, 332. 1840. 



Saurauia pedunculata leucocarpa Buscalioni, Malpighia 28: 237. 1917. 



