28 
with loose open sheaths and rather broad blades, the upper nar- 
row, becoming involute, 5 to 8 inches long or more; panicle 
long and open, 4 to 5 inches long; branches rather distant, 
mostly single, flexuous, the lower ones about 3 inches long, the 
lower half naked; lower glume about 5 inches long, the upper 
one-quarter shorter; flowering glume with the awn g lines long, 
the lateral awns obsolete or nearly so; the main awn bent 
near the middle, and twisted below. The panicle is small for 
the size of the plant, and comparatively few flowered. It ap- 
proaches Aristida Schiediana. Southern California, C. R. Orcutt; 
Arizona, M. E. Jones. 
j ARISTIDA SCHIEDIANA, var. MINOR.—Culms 12 to 18 inches 
high, rather slender, sometimes branching at the lower nodes; 
leaves of the culm three or four, longer than the sheaths (4 to 8 
inches long). Panicle 5 to 7 inches long, at first narrow, and the 
base enclosed by the upper sheath, becoming divaricate ; branches 
capillary, alternate, single, but most of them dividing immediately 
into two to four long and nearly equal branchlets from 2 to 3 inches 
long, which are again divided about the middle, each into two or 
three smaller branchlets bearing few spikelets; outer glumes nearly 
equal, about 4 lines long, not awned; flowering glume about 
5 lines, hispid-scabrous above, becoming somewhat twisted in 
age; lateral awns absent; terminal awn about 4 lines long. 
This plant is much smaller and less robust than the type, and 
has not the very long naked branches of that species, in fact the 
aspect is so different that it might be considered a different species. 
Collected in Arizona by Pringle, in 1884, and distributed as 
A. Schiediana; and by M.E. Jones at Bowie, Arizona, 1884. 
The typical A. Schiediana, as we regard it, (No. 745 C. 
_ Wright, 1849, 2012 and 2070 C. Wright, 1851-2, No. 27 Havard, 
Texas, No, 385, Lemmon, Arizona), perhaps runs into A. divarica- 
ta, Willd, the lateral awns wanting in some specimens, in others 
occurring of various lengths and otherwise hardly separable. 
Tuberiferous Hydrocotyle Americana, © 
During a stroll in the woods last fall, near Washington, D.C., 
_ in a moist, shady ravine on the banks of a small brook, I saw 
some thrifty patches of Hydrocotyle Americana. On pulling 
