18 BOTANICAL GAZETTE [JANUARY 
RaAncE.—The typical form extends from the southwestern corner of New 
Mexico through the states of Chihuahua, Durango, southern Coahuila, south- 
ern Lower California, to Oaxaca and Vera Cruz, and probably farther south in 
Mexico, because the species occurs again in Guatemala (see below); see also 
under var. Toumeyi. 
SPECIMENS EXAMINED.—New Mexico: Grant County, Canyon east side 
. San Luis Mountains, September 11, 1893, #. A. Mearns (no. 2189, m. 
., N.).—Mexico: State of Peibuakon. Canyon below Cusihuiriachic, Sep- 
nae 21, 1888, C. G. Pringle (no. 2003, m., fr.); in the Sierra Madre near 
Seven Star Mine, alt. ees September 4, ies. C. H. T. Townsend and C. M. 
Barber (no. 405, f., fr.; G., M.; forma porro observanda, an ad var. Toumeyi 
referenda ?) Beate a Coahuila, Jaral, [?June] 10, 1886, W. Schumann (no. 
1318, m.; W.).—State of mer bea vicinity of Durango, [autumn] 1896, 
E. Dawa (no. 636, f., fr.) Lower California, near Creek San Pablo, alt. 
180-220 m., Taanisey Mat 1898, C. A. Purpus (no. 140, m., fr.; W.); from 
El Saccaton to Cape San Lucas, alt. 10-150 m., December 29, 1905, EZ. W. 
Nelson and E. A. Goldman (no. 7373, m.; W.); from Miraflores to San Bernardo 
Ranch in Sierra La Laguna, alt. 450 m., January 20, 1906, same coll. (no. 7419, 
m.; W.).—State of San Luis Potosi, “ex convalli San Luis Potosi,” 1877, 
J. G. Schaffner (no. 263, f.; N.).—State of Hidalgo, Tula, river banks, alt. 
2000 m., August 18, 1906, C. G. Pringle (no. 13788, m., f.; G., W.).—State of 
Queretaro, near San Juan del Rio, August 18, 1905, J. NV. Rose, J. H. Painter, and 
J. G. Rose (no. 9600, fr.; N.).—State of Guanajuato, Guanajuato, September 
and November 1897, A. Dugés (m., fr.; G., W.).—State of Jalisco, Guadaljara, 
February 28, 1907, W. E. Safford (no. 1425, st.; W.; ‘‘an important tree 
planted for shade”); near Tequila, July 5-6, 18909, J. N. Rose and W. Hough 
(no. 4768, im. fr.; W.).—State of Michoacan, valley near Zinapecuaro, east 
of Morelia, May 2, 1849, J. Gregg (no. 767, st.; M.; ‘‘tree 30 ft. high’’); 
wet places near Patzcuaro, November 20, 1890, C. G. Pringle (no. 3376, m., f.). 
ae District, “Vallée de Mexico,” June 18, 1865, E. Bourgeau (no. 423, 
m.,f.; G., W.); same locality, alt. 2200 m., August 17, 1901, C. G. Pringle (no. 
= 7., “9 ha G., M., W.); also August 12, 1899, C. G. Pringle (no. 7916, 
at G. : ‘small tree”); without exact locality, September 16, 1910, C. R. 
Crows (no. 4070, m.; M.); without any locality but probably in this district, 
G. J. Glraham] (m.; G. ).—-State of Morelos, by streams near Cuernavaca, alt. 
1500 m., August 14, 1906, C. G. Pringle (no. 10284, m., f.; G., M., W.); 
June 9, 1904, C. G. Pringle (no. 13203, Mah; wr Gy W)). =Blate of Puebla, 
Tehuacan, H. Galeotti (no. 67, m.; N.). 
The typical S. Dontlondions 4 is a well marked species which produces its 
flowers in the axils of the mature leaves from July to January, the old leaves 
not falling off until the new. growth starts. This habit gives the species a 
r appearance, but cannot be regarded as a valuable taxonomic char- 
acter because it seems due to climatic conditions. The following specimens 
from Guatemala, therefore, hardly represent a different variety but only a 
