260 The Botanical Gazette. [June, 
** Calyx-teeth obsolete: carpophore two-parted.—High mount- 
ains of southern Mexico. 
4. Musineon alpinum, n. sp.—Acaulescent, in dense mats, 
from a thick branching caudex, 5 to 10™ high, glabrous 
throughout, or nearly so: leaves once to twice pinnate, some- 
what shorter than the peduncles, the primary segments ovate 
and more or less lobed or pinnately parted, and usually with 
a pubescent ring on the rhachis at the junction: peduncles 
thick, bearing a few-flowered 4- to 6-rayed umbel, with no in- 
volucre and involucels of few linear bractlets longer than ped- 
icels: rays unequal, 6 to 12™ long: pedicels 2 to 4™ long: 
flowers not seen: fruit glabrous, oblong-ovate, with notched 
base and blunt apex, 3™ long, with filiform ribs and long, 
flat (strap-shaped) styles.—Cold summit slopes, Nevada de 
Toluca, state of Mexico, alt. 14,000°, September 2, 1892, 
Pringle’s no. 4,247 of 1892. | 
This species is referred to Musineon, although it is widely 
separated geographically from the other species, which be- 
long to the northern plains region. Its habit and general 
characters are those of the genus as already known, but the 
obsolete calyx-teeth, two-parted carpophore, and peculiar 
styles, as well as the wide geographic separation, suggest 4 
possible generic separation if supported by further Mexican 
material. The fact that it occupies the high mountain region 
of Central Mexico makes its claim to be congeneric with the 
northern forms more reasonable. 
Lake Forest and Washington. 
