560 PROCEEDINGS OF THE AMERICAN ACADEMY. 
cence of young branches leaves and calyx ochraceo-ferrugineous, pul- 
verulent: leaves rhombic-ovate, shallowly sinuate-angled, 6 to 8 cm. long, 
4 to 5.5 em. broad: inflorescence closely flowered. — Van Heurck & 
Mill. Arg. in Van Heurck, Obs. 180.— 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-ferrugineous, densely velutinous-tomentose rarely a little gland- 
ular: leaves oblong-ovate, shallowly sinuate-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. obtusifolium, Benth. Pl. 
Hartw. 23, not HBK. SS. torvum, var. ochraceo-ferrugineum, Dunal, 
l. c. 260. — GuanasuaTo, Guanajuato, 1837 (Hartweg, no. 204), 1880, 
1883 (A. Dugés): Tamautreas, San Luis Potosi to Tampico, Dee., 
1878 to Feb., 1879 (Edw. Palmer, no. 6394); Vera Cruz, old fields, 
and recently cleared grounds, Wartenburg, near Tantoyuca, 1858 
(Ervendberg, nos. 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 em. 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. ¢ 262. — Originally desert 
from Papantla, Vera Cruz. ‘The following are referred here; Mexi% 
without locality (Coulter, no. 1245): San Luis Porost, hills, Las 
Canoas, Aug. 21, 1891 (C. G. Pringle, no. 3901, doubtfully referred 
here): Vera Cruz, Valley of Cordova, Dec. 26, 1865 or 1866 (Bou 
geau, no. 1608) ; Orizaba ( Botter’) ; near Motzorongo, Feb. 22, 1894 
(E. W. Nelson, no. 149): Oaxaca, Paso de Canoa, Tuxtepec, alt. 19! 
m., Aug. 28, 1895 ( Oonzatti, no. 183, ZL. 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 ge" 
nate and unequal, ovate to ovate-oblong, acuminate, unequal and sub: 
