560 PKOCEEDINGS OF THE AMERICAN ACADEMY. 



cence of young branches leaves and calyx ocliraceo-ferrugineous, pul- 

 verulent ; leaves rhombic-ovate, sballowly sinuate-angled, 6 to 8 cm. long, 

 4 to 5.5 cm. broad : inflorescence closely flowered. — Van Heurck & 

 Mull. Arg. in Van Heurck, Obs. 130. — Panama, Chagres, Feb., 

 March, 1850 (A. Fendler, no. 254). 



S. ochraceo-ferrugineum. Stems 1.5 to 3 m, high, armed with 

 stout broad-based deltoid prickles: young branches leaves and calyces 

 ochraceo-ferrugiueous, densely velutinous-tomentose rarely a little gland- 

 ular : leaves oblong-ovate, shallowly siuuate-angled or lobed, 7 to 16 cm. 

 long, 4.5 to 12 cm. broad, paler and more tomentose beneath than 

 above : inflorescence loosely many-flowered : calyx in anthesis 8 or 10 

 mm. long, deeply 5-parted into deltoid-lanceolate acuminate lobes : 

 corolla 3 cm. broad : anthers slender, subequal, 6 or 7 mm. long : berries 

 glabrous, 1 cm. or more in diameter. — S. ohtmifolium, Benth. PI. 

 Hartw. 23, not HBK. S. torvum, var. ochraceo-ferrugineum, Dunal, 

 1. c. 260. — Guanajuato, Guanajuato, 1837 {Hartweg, no. 204), 1880, 

 1883 {A. Duges) : Tamaulipas, San Luis Potosi to Tampico, Dec, 

 1878 to Feb., 1879 (Edw. Palmer, no. 639^) ; Vera Cruz, old fields 

 and recently cleared grounds, Wartenburg, near Tantoyuca, 1858 

 (Ervendberg, uos. 285, 485). 



S. DiVERSiFOLiUM, Schlecht. Sparingly armed : branches petioles 

 and inflorescences cinereous stellate-tomentulose : leaves oblong-ovate, 

 bluntly acuminate, with rounded bases, olive-green and stellate-scabrous 

 above, cinereous-tomentulose or pulverulent beneath, 7 to 20 cm. long, 4 

 to 12 cm. broad, subentire or slightly undulate, rarely shallowly sinuate: 

 inflorescence subaxillary, simple or branched, becoming 6 to 9 cm. long, 

 extremely floriferous, the pedicels after anthesis mostly strongly reflexed 

 or drooping. — Linnaea, xix. 297 ; Dunal, 1. c 262. — Originally described 

 from Papantla, Vera Cruz. The following are referred here ; Mexico, 

 without locality (Coulter, no. 1245) : San Luis Potosi, hills. Las 

 Canoas, Aug. 21, 1891 (C. G. Pringle, no. 3901, doubtfully referred 

 here) : Vera Cruz, Valley of Cordova, Dec. 26, 1865 or 1866 (Bour- 

 geau, no. 1608); Orizaba (Botteri); near Motzorongo, Feb. 22, 1894 

 (E. W. Nelson, no. 149) : Oaxaca, Paso de Canoa, Tuxtepec, alt. 150 

 m., Aug. 28, 1895 (Conzatti, no. 133, L. C. Smith no. 669). 



= = Branches unarmed. 



S. Hayesii. A small tree : the young branches finely but densely 

 invested with short ochraceo-cinereous stellate hairs : upper leaves gemi- 

 nate and unequal, ovate to ovate-oblong, acuminate, unequal and sub- 



