508 PROCEEDINGS OF THE AMERICAN ACADEMY. 
central Mexico. Mexico, Valley of Mexico, Sept. 7, 1865-66 (Bour- 
geau, no. 859); wooded cafions, Sierra de las Cruces, Oct. 2, 1892, and 
Serrania de Ajusco, alt. 3,075 m., Sept. 11, 1897 (CO. G. Pringle, nos. 
4278, 7457). Originally from the region of Ario, MICHOACAN, 
B. Acaulae. Similar to Angustifoliae but tending to be acaulescent or 
subacaulescent, the obovate canescent basal leaves forming a rosette: 
peduncle 0.5 to 2.5 dm. high ; raceme as long; the verticels remote. 
52. S.nana, HBK. lc. 289; Benth. in DC. 1.c. 304; Hemsl. lc. 
561; Brig. Lec. S. prunelloides, Benth. Pl. Hartw. 90, 351, not HBK. 
S. rhombifolia, Sessé & Moe. 1.c. 8.—Northern Mexico to Central 
America. DuraneGo, El Salto, July 12, 1898 (2. W. Nelson, no. 4566) : 
Zacatecas, near San Juan Capistrano, Aug. 18, 1897 (J. WV. Rose, no. 
3534): San Luis Potosi, rare in the mountains, San Rafael, 1876 
(Schaffner, no. 680) ; alt. 1,840 m. (Parry & Palmer, no. 745, 746) 
Guanasvato, 1893 (A. Dugis, no. 228 B): Oaxaca, Boca de Leon, 
Telixtlahuaca, June 27, 1895 (ZL. C. Smith, no. 414). Originally from 
GUANAJUATO. 
C. Vulgares, Benth. Branching or sometimes simple herbs, rarely 
half-shrubs: leaves petioled, ovate, rarely oblong, membranaceous; 
rounded round-cuneate or subcordate at base. (S. prumelloides an 
S. Martensii may be looked for here.) 
* Annuals. 
+ Coarse more or less canescent plant with long-petioled pale-green leaves and 
peduncled spiciform heads with persistent foliaceous broad bracts. 
53. S. mispantca, L. Spec. 25; Edw. Bot. Reg. v. t. 359; Benth. im 
DC. lc. 308; Hemsl. 1c. 558; Brig. in Engl. & Prantl, 1. ¢. 279. 
S. tetragona, Moench, Meth. 373. S. prismatica, Cav. fide Hemsl. lL. ¢- 
S. neo-hispanica, Briq. Ann. Conserv. Jard. Bot. Geneve, ii. 137.— 
From western Texas and Coahuila to northern South America and he 
West Indies. Introduced into southern Europe, whence the specific 
name. CoanuiLa, Carneros Pass, Sept. 27, 1890 (C. G. Pringle, 0°: 
3683): Duranco, sides of arroyos, Santiago Papasquiaro, Aug:, 1896 
(Edw. Palmer, no. 967); bottom-lands, Durango, Oct., 1896 (a 
Palmer, no. 757): San Lvs Porost, sand near the city, 1876 
(Schaffner, nos. 675, 1053): GuanasvaTo, 1895 (A. Duges): JALtsce 
Rio Blanco, Oct., 1886 (Haw. Palmer, no. 659): Vera Cruz, Orizabs 
( Botteri, no. 534): Mexico, Santa Fé, Oct. 15, 1865-66 (Bourgeat, 2 
1109): Oaxaca, near Reyes, alt. 1,800 to 2,600 m., Oct. 20, 18 
(Z. W. Nelson, no. 1782); Jayacatlan, alt. 1,350 m. Nov. 4; 1894 
