518 PROCEEDINGS OF THE AMERICAN ACADEMY, 
long; the galea exceeding the drooping lip: stamens and style exserted, 
glabrous. — MoreLos, mountain side above Cuernavaca, alt. 707 m, 
Feb. 5, 1899 (C. G. Pringle, no. 8039). 
+-+ Leaves ovate-lanceolate ; corolla flesh-colored. 
187. S.michoacana. Shrub 1.5 to 3 m. high, the branches puber- 
ulent: leaves 0.3 to 1.2 dm. long, 1 to 6 cm. broad, long-acuminate, 
minutely pilose or glabrate above, canescent or glabrate beneath, slender- 
petioled: racemes dense, 1.5 dm. or less long; the lower verticels often 
in the axils of the upper leaves: calyx in anthesis 4 mm. long, otherwise 
as in the last: corolla villous, slender, 2 to 2.5 cm. long; the galea ex- 
ceeding the lip: stamens and style exserted, glabrous. — MIcHOACAN, 
dry wooded hills near Patzcuaro, Nov. 12, 1890, and Nov. 24, 1891 (@. 
G. Pringle, nos. 3600, 3946) : Jatisco, between San Sebastian and the 
summit of Mt. Bufa de Mascota, alt. 1,380 to 2,150 m., March 20, 1897 
(#. W. Nelson, nos. 4102, 4104). 
O O Leaves velutinous or lanate beneath. 
+ Leaves serrate: calyx setulose-hispid or glabrate, with short broad mucron- 
ate lobes. 
188. S. nervara, Mart. & Gal. lc. 77; Benth. 1. c. 839; Hemsl. 
l.c. 561; Brig. 1c. S. monochila, Donnell Smith, Bot. Gaz. xxiii. 13.— 
Southern Mexico and adjacent Central America. Guaremava, Tondos 
Santos, Dept. Huehuetenango, alt. 3,080 m., Dec. 26, 1895 (Z. W. Nel- 
son, no. 8635). Originally from Oaxaca. Capt. Smith distinguishes 
his S. monochila from S. nervata by its pubescent calyx and scarlet cor- 
olla. In the specimen of Nelson’s no. 8635 at hand, however, the corolla 
is distinctly purple, not scarlet, and there seems little else to keep the 
two apart. 
+ + Leaves crenate: calyx glandular-villous ; the lobes long-acuminate. 
189. S. KArwinsku, Benth. Lab. 725, & in DC. 1. c. 345; Hemsl. 
l.c. 558; Brig. 1. c.— Described from “ Mexico.” Not seen. 
OOO Of close affinity to the preceding but not identified is 
190. S. excetsa, Benth. Bot. Reg. xxvii. Mise. 90, & in De. pe 
342, described from GuaTeMALA and said to be near S. tubifera bu 
with the 2—4-flowered verticels in an elongated loose raceme. 
2. Pubescence stellate. 
191. S.Rosei. Shrub with dark gray bark ; branches canescent with 
minute stellate pubescence: leaves ovate, appressed-serrate, blunt oF 
