558 PEOCEEDINGS OP THE AMERICAN ACADEMY. 



corymb generally bifid or trifid, many-flowered, cymose, the fruitinw 

 pedicels mostly ascending. — Prodr. 47 ; Duual, Sol. 203, t. 23, & in 

 DC. Prodr. xiii. 260. — Originally described from the West Indies, 

 where it is common. In Mexico known only from the Sonth, Chiapas, 

 near liuehuetan, alt. 150 to 615 m., Feb. 22, 1896 {E. W. Nelson, no. 

 3830). 



Var. RUBiGiNOSDM, Dunal, I.e. 261, described from Guatemala, ap- 

 parently ditfers from the species only in its more ferrugineous pubescence. 

 — Guatemala, Rio Dulce, Depart. Livingston, March, 1889 (J. Donnell 

 Smith, no. 1840): Nicaragua {0. Wright). 



S. IIeknandesii, Moc. & Sesse. More spiny throughout, the branches 

 more loosely sordid-tomentose : leaves deeply and sinuately 5-7-lobed, 

 the lobes sometimes pinnatitid : inflorescence at first subcorymbose. simple 

 or bifid, becoming distinctly racemose : fruiting pedicels spreading. — 

 Moc. & Sessc! in Dunal, 1. c. 266. — Chiapas, mountains near Tonala, 

 alt. 600 to 1,050 m., Aug. 14, 1895, table land about Ocuilapa, alt. 1,050 

 to 1,170 m., Aug. 21, 1895 {E. W. Nelson, uos. 2904, 3029): Guate- 

 mala, San Miguel Uspantan, Depart. Quiche, alt. 1,850 m., April, 

 1892 {Heyde & Lux in exsicc. J. D. Smith, no. 3446) : Nicaragua (C. 

 Wright) . 



S. madrense. Shrubby, the young branches loosely stellate-tomentose 

 with canescent or ochraceous hairs, and armed with straight or slightly 

 curved prickles : leaves thick, ovate to ovate-lanceolate, acuminate, un- 

 equally subcordate at base, subentire or bluntly and shallowly sinuate- 

 angulate, without the petiole (1 to 3 cm.) 5 to 15 cm. long, 4 to 13 cm. 

 wide, above olive-green, stellate-scabrous, beneath a little paler and 

 tomentulose, sometimes slightly armed ; young leaves often aureate- 

 tinged, and velutinous : inflorescences extra-axillary, in maturity 4 to 9 

 cm. long, simple or bifid, scorpoid-racemose ; the pedicels glandular 

 hairy, spreading and reflexed in fruit : calyx-lobes lanceolate, long- 

 acuminate : corolla 2 cm. long, 3 cm. broad, whitish, deeply lobed, the 

 lobes lanceolate or lance-ovate, acutish : filaments very short ; anthers 

 subequal, slender, 8 or 10 mm. long: the style somewhat longer: berry 

 apparently black, glabrous, 1 to 1.5 cm. in diameter. — S. diver sifolium, 

 Wats. Proc. Am. Acad. xxi. 434, not Schl. S. torvum, Wats. 1. c. xxii. 

 441, not Swartz. — The common representative of the group in the 

 Sierra Madre and westward to the Pacific. Sonora, Sierra de los 

 Alamos, March 25 to Apr. 8, 1890 {Edw. Palmer, nos. 363, 364): Chi- 

 huahua, Hacienda San Miguel, 1885 {Ediv. Palmer, no. 22): Tepic, 

 San Bias, June 6, 1897 {E. W. Nelson, no. 4335): Sinaloa, Mazatlan, 



