180 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
Type species : Schedonnardus texanus Steud. 
Schedonnardus Steud., Syn. PL Glum. 1: 146. 1854. A single species de- 
scribed, S. texanus, based on Druinmond's no. 360 from Texas. This is S. 
paniculatus (Nutt.) Trel. (Lep- 
turus paniculatus Nutt.). 
Spirochloe L u n e 1 1, Amer. 
Midi. Nat. 4: 220. 1915. Pro- 
posed for " Schedonnardus 
Steud . . . not thought per- 
missible, being built on 
Nardus." 
Schedonnardus panicu- 
latus (fig. 107), the only 
species of the genus, is 
found on prairies and 
plains from Montana and 
Illinois to Texas. The axis 
of the inflorescence elon- 
gates after flowering, be- 
coming 1 to 2 feet long, 
curved in a loose spiral. 
The whole breaks away at 
maturity and rolls before 
the wind as a tumbleweed. 
The species is a forage 
grass, but the plants are 
low and in the main form 
only an inconsiderable pro- 
portion of the total forage. 
89. Beckmannia Host. 
Spike lets 1-flowered, 
rarely 2-flowered, laterally 
compressed, subcircular, 
nearly sessile and closely 
imbricate, in two rows 
along one side of a slender 
continuous rachis, disartic- 
ulating below the glumes, 
Fig. 106— Willlcommia texma. Plant, X 1 ; two views of spikelet and two views of 
floret, X 5. 
