* 
500 PROCEEDINGS OF THE AMERICAN ACADEMY, 
Central Mexico. Durango, infrequent on shady slopes of ravines, 
Santiago Papasquiaro, Aug., 1896 (dw. Palmer, no. 451): San Luis 
Porost, alt. 1,850 to 2,460 m., 1878 (Parry & Palmer, no. 736): 
Mexico, barranca near Santa Fé, July 6, 1865-66 (Dourgeau, no. 
490); Santa Fé, Sept. 3,1899 (C. G. Pringle, no. 7991). 
* * Bracts less conspicuous, soon deciduous: calyx campanulate, conspicuously 
bil 
ilabiate, subinflated. 
+ Leaves sessile or subsessile or narrowed to short inconspicuous petioles: racemes 
ed, at least the lower verticels becoming remote: perennials. (5. 
assurgens may be looked for here.) 
++ Stems leafy nearly or quite to the inflorescence. 
= Without glandular hairs on stem and calyx. 
29. S. ancustiroxra, Cav. Stems hispid, bearded at the nodes, 2 to 
7 dm. high, very leafy: leaves mostly hispid on the margins and nerves 
— Ic. iv. 9, t. 317; Lindley, Bot. Reg. xviii. t. 1554; Sweet, Brit. Fl. 
Gard. n.s. iii. t. 219; Benth. l.c. 301; Hemsl. l.c. 552; Gray, Syn. Fl. 
N. A. ii. 369; Brig. le. S. reptans, Jacq. Hort. Schoen. iii. 38, t. 319: 
S. virgata, Ort. Dec. i. 8.—Central and Southern Mexico. Zaca- 
TECAS, near Plateado, Sept. 2, 1897 (J. WV. Rose, no. 2745): JALISCO, 
Valiey of Mexico, Tizapan, June 26, 1865-66 (Bourgeau, no. 125, in 
part): Micnoacay, Tlalpujahua 1828 (Graham) ; plains near Patzcuaro, 
Aug. 7, 1892 (0. G. Pringle, no. 4163). SS. linifolia, Mart. & Gal. 
1. c. 70, and Benth. l.c. 302, from Micnoacan is probably only a form 
with rose-colored corolla. 
Var. GLaBra, Gray, l. c. Stems and leaves glabrous. — S. leptophylla, 
Benth. Lab. 249, & in DC. 1. ¢. 299. S. azurea, Torr. Bot. Mex. Bound. 
131, in part. — From Texas through central and southern Mexico, of 
broader range than the hispid type. San Luis Poros, in sand near the 
city of San Luis Potosi, 1876 (Schaffner, no. 672): AGuas CALIENTES 
(Hartweg, no. 163); Jaxisco, edge of swamp, Guadalajara, July, 1886 
(Edw. Palmer, no. 226): Catapas, without locality, 1864-70 ( Ghies- 
breght, no. 751); valley of Jiquipilas, alt. 650-1,100 m., Aug. 16, 1899 
(EZ. W. Nelson, no. 2922). 
== = Glandular-hairy. 
30. S. heterotricha. Stems erect from a rather woody base, 2.5 2 
4.5 dm. high, puberulent, and, especially above, bearing slender jointed 
glandular hairs: leaves linear-attenuate, strongly 1-3-nerved, 3 to 8 EE: 
long, puberulent or glabrate or rarely with some slender glandular hairs: 
raceme 2 em, or less in length; verticels all remote, the lower 8 to 4 cm. 
apart, 3-9-flowered: bracts lanceolate to ovate-lanceolate, glandular 
