8 
rhéhis, readily falling off at maturity from the small, cushion-like barbate gu 
icel. Rachis y EA sna — e. T M aminate spikelets 2-flowered, t 
first floret sessile ked stipe or joint of the 1 
rachilla not potni beyond the eins floret Outer empty glumes 3; 2 nar- 
rowly oblong, obtuse, 1-nerved ; 1 larger, paa and obtuse; flowering glumes 
3-nerved, »» sécond 3-cleft, the divisions awn-li Stamens, 3. Pistillate e 
spikelets 1-flowered, with a 3-awned cal ica 5 the rachilla above the 1 
ower; outer empty glumes 3, equal, cuneate, broadest above, narrowed below 
into a shòrt and rather densely pilose, pedicel-like base or claw; 2 broadly trun- 
cate and unequal, rounded at the apex, one of which is 2- to 3-nerved, the other 
3- to5-nerved ; the third glume, occupying the position of a second empty glume, 
is a little narrower than the others, 1-nerved, and somewhat 3-lobed at the broad 
apex; flowering glume raised 
upon a short stipe or joint of 
f the rachilla, d 3-cleft 
at the apex middle divi- 
sion longest 05 sometimes 
T 2-toothed,the mid-nerve project- 
' | a ing between the teeth; styles 
distinct; stigmas plumose 
delicate, much-branched, creep- 
ing perennial, with simple erect 
spikes, the rachis projecting be- 
yond the uppermost spikelet in- 
to a short, 2-cleft prolongation. 
ico. 
} 
== 
105 
= — 
Sheaths loose, striate, smooth, 
usually much shorter than the 
ingly pilose above. Spikes ter- 
"f a minal and axillary, often 3 or 4 
FIG. 1.—Fourniera mexicana, male plant: a, spikelet; b, naked flowering branches from 
second floret; e, d, e, the three outer glumes (e corre- the uppermost or terminal leaf- 
sheath, as in Cathestecum, the 
slender spikes — from 
15 spikelets. Staminate spike- 
lets 2 to 2} lines long, two of the outer empty glumes about Rui line long, 
Sect iuge thè "position b the first glume, Mois is, ee at bso unt - ea first 
roader, 
and a line long; first flowering glume - 14 lines long, thin membranou iun 
rounded on the back, apex entire or indistinetly 3-toothed; sd longer 
s than the glume, strongly T — iussi bro oad infolded margins; second flower- 
ing glume nearly 2 lines long, i he awn-like extension of the mid-nerve, 
smooth; palea ADO al as long as hë xin. Pistillate spikelets about 2 lines 
long exclusive of the awns; outer glumes 1 to 14 lines long, scabrous on the 
back, the narrow pedicel-like base of each densely pilose; flowering glume 14 
3 = 9-cleft at the apex, the middle division es and sometimes 
1 P he 
4 A 
Lin E r. E 
sponds to e in fig. 2); 9, ipsc floral glume of the same; 
 h,stamens. The details are all d pon th 
same 
