'"••' s PROCEEDINGS OF THE AMERICAN ACADEMY. 



corymb generally bifid or trifid, many-flowered, cymose, tlie fruiting 

 pedicels mostly ascending. — Prodr. 17; Dunal, SoL 208, t. 28, & in 

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

 where if is common. In Mexico known only from the South. Chiapas, 

 Dear Huehuetan, alt. 150 to 615 in., Feb. 22, L896 ( /.'. W. Nelson, no. 

 10). 



Var. rubiginosum, Dunal. I.e. 201, described from Guatemala, ap- 

 parently differs from the species only in its more ferrngineous pubescence. 

 — (ii am. mm. \, Rio Dulce, Depart. Livingston, March, 1889 (J.DonneU 

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



S. Hernandesii, Moc. & Sess& More spiny throughout, the branches 

 more loosely faordid-toinento.se: leaves deeply and sinuately 5-7-lobed, 

 the lubes sometimes pinnatifid : inflorescence at first Bubcorymbose, Bi'mple 

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

 Moc. «5c Ses8o in Dunal, I.e. 266. — Chiapas, mountains near Tonala, 

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

 to 1,170 in., Aug. 21, 1895 (K W. Nelson, nos. 2901, 3029): Gi vi I - 

 MALA, San Miguel Uspantan, Depart. (Quiche, alt. 1,850 in., April, 

 1892 | IUijdc ec Lux iu exsicc. J. D. Smith, no. 3440) : NlCARAGTJ \ < ' '. 

 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 Bhallowly sinuate- 

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

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

 tomentulose, sometimes slightly armed; young haves often aureate- 

 tinged, and velutinous: inflorescences extra-axillary, in maturity 1 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 lohed, the 

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

 Bubequal, slender, 8 or lo mm. long: the style somewhat longer: berry 

 apparently black, glabrous, 1 to L.5 cm. in diameter. — S. rf i versifolium, 

 Wats. Proc. Am. Acad. xxi. 134, not Schl. S. torvum, Wats. 1. c. .\xii. 

 111. not Swartz. — The common representative of the group in the 



Sierra Madiv and westward to the Pacific. SONORA, Siena de los 



Ala s, March 25 to Apr. 8, 1890 (Edv>. Palmer, nos. 868, 864): Chi- 

 huahua, Hacienda San Miguel. 1885 {Edw. Palmer, no. 22) : Tkpio, 



San l'.las, June 0, 1897 (/•,'. W. Nelson, no. 4335): Sinaloa, Mazatlan, 



