^QxicuXtixtaX ^.^'pcvitixeitt ^tatioxx 
xxf tlxc 'xEwixxiCvsxtn xxf fewnesses, 
ivtxoa^xjiXXc. 
Director, 
F. LAMSON-SCRIBNER. 
Assistant Director, 
CHAS. F. VANDERFORD. 
2 
lected a closely allied species vdthmore slender st ons and 
much nari’ower i-earf, V/hen I first received Pringle’s grass, 
I thought it must represent a new genus, and I drev/ up as care- 
fully as possible^ charac ter s to define it* but as I studied the 
subject more thoroughly, considering the genera Diplachne, 
Leptochloa, etc., u^’' characters one by one disappeared, and so 
I ventured it as a Leptochloa^ aid yet^I don’t feel quite satis- 
fied about this disposition of it, more especially sane-© the dis- 
covery of Palmer’s grass. In ray notes I had called it Hackelia, 
characterized as follavs: 
Spikelets tv/o- to four- flowered, up p. ermoct imporf e »4 , 
racemose^ along one side of the slenders more or less spreading 
k 
and elongated panicle-branches; rachilla articulated above the 
empty and each flowering glume, sparingly pilose; flow- 
ers hermaphrodite, or the hpper one stamina te or neuter. Empty 
gluxaes two, persistent, chardaceous^ or meiabraiaceous, unequal, 
acute, one-nerved, siiorter than the nearest flov/ering glume; 
flof ering glumes compressed, keeled, herbaceous, strongly three- 
nerved, dorsal and lateral nerves densely silky-villous below, 
mid-nerve extending into an aval beyond the entire apex of the 
' glume; callus distinct, somewhat acute, pilose; palets a little 
