612 PROCEEDINGS OF THE AMERICAN ACADEMY. 
ealyx generally with shorter pubescence. — Bull. Soc. Bot. Belg. xxx. 
& Ann. Conserv. Jard. Bot. Geneve, l.c. S. caesia, Willd. Enum. 
i. 40; HBK. 1. c. 295. — Central Mexico to Central America. H1paLeo, 
Guadalupe, Valley of Mexico, Aug., 1865-66 (Bourgeau, nos. 721, 854), 
Aug. 17, 1865 (Bilimek, no. 316): Mexico, Takubaya, Aug. 28, 1865 
(Bilimek, no. 815): Oaxaca, near Puebla, alt. 2,150 m., Nov. 9, 1895 
(L. C. Smith, no. 908). 
Var. philippensis. Leaves as in the species: racemes simple, 
elongated, 1 to 2 dm, long: calyx short villous. — Oaxaca, Sierra de 
San Felipe, alt. 2,300 m., Sept. 1, 1894 (Z. W. Nelson, no. 1175), Oct. 
5, 1894 (C. G. Pringle, no. 4958). 
Var, Seorsa. Similar to the last: leaves glabrate beneath: racemes 
simple, elongated ; verticels many-flowered, the lower 2 to 3 cm. apart. — 
Mexico, Valley of Mexico, Sept. 19, 1889 (C. G. Pringle, no. 2818). 
Var. albicans. Leaves ovate, thinner than in the other forms, 
slightly canescent above, very white-tomentose beneath : racemes simple, 
1 to 1.5 dm. long: calyx densely white-villous. — S. purpurea, var 
pubens, Donnell Smith, lc. iii. 67, not Gray. — GuaTEMALA, Santa 
Rosa, Depart. Santa Rosa, alt. 920 m., Nov., 1892 (Heyde & Lux 10 
exsice. J. D. Smith no. 4394). An extremely canescent plant. 
Var. porosina, Brig. lc. Leaves ovate-lanceolate or lanceolate, 
long-acuminate, pubescent as in the species: racemes simple, 1 dm. or 
less long: calyx hirsute. — San Luts Porost, San José Pass, July 23, 
1890 (C. G. Pringle, no. 3224). 
d. Leaves pilose-hispid or glabrate beneath: stems and calyces pubescent wit 
slender spreading glandular hairs. : 
64. S. aequidistans. Erect or ascending: stems 1.5 to 4 dm. high, 
glandular-hirsute: leaves rather remote, the lower small, the uppe 
much larger, oblong-ovate to broadly deltoid-ovate, obtuse, the bi fa 
most 3 to 4.5 em. long, crenate-serrate, more or less setulose above: 
racemes slender, elongated, 0.5 to 2 dm. long ; the verticels 2-6-flowered, 
all remote, the lower equidistant, 2 to 3 cm. apart: pedicels filiform, 2 
to 4 mm. long: calyx campanulate, strongly bilabiate, the tube twice “ 
thrice as long as the ovate lips; upper lip entire, lower short-cleft: 
corolla 1.3 em. long, the pilose or glabrate tube ventricose, nearly twice 
exceeding the calyx; lip a little exceeding the pilose galea: _ 
bearded. — Stnatoa, between Rosario and Colomas, July 12, 1897 (/ 
WV. Rose, no. 1609). 
