1920] Fernald,—New Digitaria from New Hampshire 101 
or glabrate and have the pappus of a few short white bristles or 
wanting. All these plants differ constantly from the other species 
in the reduction of ray pappus, as well as the other floral and foliage 
characters emphasized in our key. Consequently, having studied 
abundant material of the group and realizing the constancy and 
importance of particular floral characters, especially those of the 
pappus, we raise var. semicalva to specific rank. 
New Mexico: side of mountains, at copper mines, Oct., 1851, 
Charles Wright, no. 1,268 (rype); Valley of Coppermine Creek, 
Aug., Oct., 1851, Charles Wright, no. 1,267; altitude 7,000 feet, White 
Mountains, Aug. 12, 1897, E. O. Wooton, no. 501; Forest Nursery, 
Fort Bayard, Oct. 1, 1905, J. C. Blumer, no. 102. Arizona: alti- 
tude 8,100 feet, Grand View, Chiricahua Mts., Sept. 10, 1907, J. C. 
Blumer, no. 1,652; in shade, sandy alluvium, near Cedar Gulch, 
Paradise, altitude 5,300 feet, Chiricahua Mts., Sept. 21, 1907, J. C. 
Blumer, no. 1,713; sandy washes, Mule Mts., Oct. 8, 1910, L. N. 
Goodding, no. 924. CmimvaAHvA: altitude 7,500 feet, near Colonia 
Garcia in the Sierra Madres, Aug. 7, 1899, C. H. T. Townsend & 
C. M. Barber, no. 241; near Colonia Garcia, Aug. 1-20, 1899, E. W. 
Nelson, no. 6,212; along road to Porral, near San Julian, altitude 
7,000-8,000 feet, Sept. 8, 1898, E. W. Nelson, no. 4,936. San Luts 
Porosi: in arenosis circa urbem, Sept., 1876, J. G. Shaffner, no. 234. 
Gray HERBARIUM. 
A NEW DIGITARIA FROM NEW HAMPSHIRE 
M. L. FERNALD 
Tue only indigenous species of Digitaria heretofore recognized 
as far north as New England is D. filiformis (L.) Koeler, which 
reaches its northern limit in the gravelly and sandy regions of north- 
ern Essex County, Massachusetts, and southern Hillsboro County, 
New Hampshire. Slightly to the north, however, in northeastern 
Hillsboro County, the late F. W. Batchelder discovered in September, 
1901, a remarkable species which he distributed to various herbaria 
as Syntherisma filiforme (L.) Nash (= D. filiformis) but which, 
except for its superficial resemblance, is quite distinct from the 
latter species. A detailed review of all the North American species 
of the genus clearly shows that Mr. Batchelder's plant is a unique 
species as nearly allied to the two local species of Florida, D. gracillima! 
IDrarrarta gracillima — (Scribn.), n. comb. Panicum gracillimum Scribn. Bull. 
Torr. Bot. Cl. xxiii. 146 (1896). Syntherisma gracillima [um] (Scribn.) Nash, Bull. 
Torr. Bot. Cl. xxv. 295 (1898). 
