538 PROCEEDINGS OF THE AMERICAN ACADEMY. 
mit of Mt. Bufa de Mascota, alt. 2,150 to 2,300 m., March 20, 1897 (2. 
W. Nelson, no. 4093): MicHoacan, Tlalpujahua (Graham) : Mexico, 
Toluca (Andrieux, no. 144); Désierto Viejo, Sept. 7, 1865, and San 
Nicolas, Oct. 26, 1865 (Bourgeau, nos. 853, 1106); Valley of Mexico. 
(Schaffner, no. 396); cool forests, Sierra de las Cruces, alt. 3,230 m., 
Aug., 1892 (0. G. Pringle, no. 4227); Amecameca, Feb. 3, 1893 (£. 
W. Nelson, no. 6); foothills, Mt. Ixtaccihautl, Jan. 5, 1899 (C. C. 
Deam, no. 124): Morexos, Serrania de Ajusco, alt. 2,460 m., May 26, 
1898 (C0. G. Pringle, no. 6862). 
Var. Boucueana, Benth. l.c. 334. Leaves narrowly deltoid-ovate, 
truncate or subcordate at base. — S. Boucheana, Kunth, Ind. Sem. Hort. 
Berol. 1845. — Mrcnoacan, Tlalpujahua (Graham): Purswa, calca- 
reous hills near Tehuacan, Aug. 30, 1897 (0. G. Pringle, no. 7449). 
b. Leaves merely pilose on the nerves beneath, coarsely crenate, and with blunt 
tips: calyx not at all or very minutely glandular-puberulent. 
151. S.orizabensis. Branches short-pilose with recurved hairs, 
minutely glandular above: leaves ovate, thin, minutely pilose above, 4 
to 8 cm. long; the base subcordate with a short acumination at the june 
tion with the slender retrorse-pilose petiole: raceme 1 dm. or so long; 
verticels 4—10-flowered, all remote, the lowest 4 to 5 cm. apart: bracts 
ovate-lanceolate, acuminate: pedicels 3 to 5 mm. long, sordid-viscid : 
ealyx in anthesis 1.5 to 1.75 cm. long, slightly pilose on the nerves ; the 
tube nearly twice exceeding the ovate bluntish lobes; upper lip entire: 
corolla-tube glabrate, twice exceeding the calyx; galea, long-bearded, 
equalling the lip: style somewhat bearded. — Vera Cruz, Mt. Orizaba 
(Botteri, no. 1168). 
== Corolla 2.5 to 2.75 em. long. 
152. S.adenophora. Shrub (“sarmentose” according to Smith) 
with brown bark; the branches glandular-pilose : leaves cordate-ovates 
acuminate (rarely blunt), crenate-serrate, green and sparingly pubescent 
above, more or less white tomentose beneath, 4 to 10 cm. long, on 
slender petioles 3 cm. or less in length: racemes 3 dm. or less in length ; 
the rhachis very glandular-hairy; verticels 6-20-flowered, all remote; 
the lowest 2 to 3 cm. apart: bracts ovate, glandular, caducous : pedicels 
6mm. or less in length, glandular: calyx campanulate, very glandular, 
in anthesis 8 to 10 mm. long, the tube twice exceeding the broad ovate 
mucronate or short-acuminate lobes; upper lip entire: corolla glandular- 
pilose, the tube once and a half longer than the calyx ; galea and lip sub- 
equal: style bearded. — Oaxaca, Jayacatlan, alt. 1,230 m., Sept. 1], 
