530 PROCEEDINGS OF THE AMERICAN ACADEMY. 



bicolor, Sesse & Moc. 1. c. 8. — Coahuila to Oaxaca, often cultivated. 

 Without locality {Graham): Coahuila, garden at Saltillo, 1848-49 

 (Greffff, uo. 507) : Zacatecas, in plaza, Moute Escobedo, Aug. 27, 

 1897, and on the Sierra de los Morones, near Plateado, Sept. 1, 1897 

 (J. N. Rose, nos. 2641, 3627) : San Luis Potosi, near Santa Maria, 

 1876 {Sdiaffner, no. 669). 



•t- -1- Leaves ovate, subcordate: corolla reddish. 

 ++ Leaves very rugose, 2.5 to 4 cm. long, on short petioles 4 to 8 mm. long. 



124. S. lantanakfolia, Mart. & Gal. I.e. 69; Benth. I.e. 322; 

 Hemsl. I.e. 559; Briq. I.e. — Puebla, Atlixco, July 25-Aug. 1, 1893 

 {E. W. Nelson). Originally from Puebla. Seaton's no. 500 from 

 Maltrata, Veua Cruz, is near this species but not satisfactorily referable 

 to it. 



t-c ++ Leaves hardly rugose, 0.5 to 1 dm. long, on petioles 1.5 to 2.5 cm. long. 



1 25. S. populifolia. Shrub with gray bark : branchlets and petioles 

 lanate with yellowish white pubescence: leaves ovate, bluntly acuminate, 

 crenulate, green and puberulent above, white-velutinous beneath : raceme 

 1.5 dm. or less in length, simple or with a tendency to branch ; verticels 

 about 6-fiowered, becoming a little remote : bracts ovate, acuminate, 1 cm. 

 long, purple-lanate without, soon deciduous : calyx campanulate, in an- 

 thesis 1.8 cm. long, the tube twice or thrice exceeding the deltoid acu- 

 minate lobes ; upper lip entire, lower 2-lobed : corolla pilose, reddish, 

 3.5 cm. long, the galea slightly exceeding the lip : long-exserted por- 

 tion of style glabrous. — Jalisco, Bolanos, Sept., 1897 (J.N. Rose, 

 no. 2862). 



* * Pubescence of dorsal and ventral portions of calyx dark red, of tlie sides bril- 



liant yellow : corolla dark red ; the lip much shorter than the galea : leaves 

 ovate4anceolate, acuminate at base, very rugose above. 



126. S. PiTTiERi, Briq. Bull. Soc. Bot. Belg. xxx. pt. 1, 237. De- 

 scribed from Costa Rica, and doubtfully referred by its author to this 

 group. 



§ 5. Macrostachyae, Benth. Pubescent large-leaved shrubs or 

 herbs. Racemes dense, thick, with large thick firm leaf-like j^ersistent 

 bracts. Corolla blue or white, twice or thrice as long as the calyx. 



* Villous herb: leaves ovate, rounded or subcuneate to a winged petiole : verti- 



cels very many-flowered, somewhat remote. 



127. S. clinopodioides, IIBK. 1. c. 294, t. 145 ; Benth. I.e.; Hemsl. 

 I.e. 554; Briq. I.e. S. parquerensis, Moc. & Sess. in Benth. Lab. 273; 



