156 BULLETIN 772, U. S. DEPARTMENT OF AGRICULTURE. 
B r achy elyt rum erectum (Schreb.) Beauv. (fig. 90). found in 
rick rocky woods in the northeastern quarter of the United States, is 
of no economic importance. It has been known also as B. aristatum 
Beauv. 
74. Milium L. 
Spikelets 1-flowered. disarticulating above the glumes: glumes 
equal, obtuse, membranaceous, rounded on the back; lemma a little 
shorter than the glumes, obtuse, awnless. obscurely nerved, rounded 
on the back, dorsally compressed, in fruit becoming indurate,, smooth, 
and shining; the margins inclosing the lemma, as in Panicum. 
Moderately tall grasses with flat blades and open panicles. Spe- 
cies about six. in the cooler parts of Eurasia, one of which is found 
also in northeastern Xorth America. 
Type specie?: Milium effusum L. 
Milium L.. Sp. PI. 61, 1753; Gen. PL, ed. 5. 30. 1751. Two species are de- 
scribed, M. effusum and If. confertum. The first species is chosen as the type 
as it was the one best known to Linnaeus, beins: described in his flora of Sweden. 
The second species is now reduced to a variety of M. effusum. Milium is an 
ancient Latin name for the common millet of Europe (Panicum miliaceum L.). 
Linnaeus applied this name to the genus above described. 1 
Milium effusum L. (fig. 91), millet grass, the only representative of 
the genus in America, is a slender erect perennial 3 to 1 feet tall. 
found in cool woods from Xova Scotia to Illinois. It is of no 
economic importance. 
75. Oeyzopsis Michx. 
Spikelets 1-flowered. disarticulating above the ghunes: glumes 
about equal, obtuse or acmninate: lemma indurate, usually about as 
long as the glumes, broad, oval or oblong, nearly terete, usually 
pubescent, with a short, blunt, oblique callus, and a short, deciduous, 
sometimes bent and twisted awn: palea inclosed by the edges of the 
lemma. 
Perennial^ mostly low grasses, with flat or often, involute blades 
and terminal narrow or open panicles. Species about 20. in the north 
temperate regions of both hemispheres: 13 species in the United 
States. 
Type species: Orysopsis asperifolm Michx. (fig. 92 ). 
Oryzopsis Michx., Fl. Bor. Ainer. 1 : 51. 1S03. A single species described. 
Dilepyrum Baf., Med. Bepos, 5 : 351. 1808. Bafinesque here announces a new 
work and gives the names of several proposed new genera and species. One of 
these is u Dilepyrum, the Orizopsis of do [Michaux].'* The type, then, is Oni- 
zopsis asperifolia Michx. 
Piptatherum Beauv., Ess. Agrost. 17. pi. 5, f. 10. 1812. Beauvois mentions 
five species and figures two, P. eoerulescens and P. punetatum. Milium corruh:*- 
cens, the basis of the first species, is chosen as the type. 
Eriocoma Nutt. ? Gen. PI. 1: 40. 1818. The type is E. cuspidata Xutt.. the 
only species described. This is the same as Onjzopsi-s hymenoides. 
1 For a discussion of Milium and Panicum, see Hitchcock and Chase, Contr. U. S. Nat. 
Herb. 15: 11. 1910. 
