120 | POACEAE 
about as long as the spikelet: lemmas thin, 3-nerved, densely long-pilose, gradu- 
ally narrowed at the summit, the nerves ending in slender teeth, the middle one 
longer, extending into a oce a 
florets successively smaller, the summi 
all about equal.—Six species, native of "s 
warmer parts of the Old Wor 
A. Donax L. Ste much a ; 
tall, branching, the rootstocks thick, DES 
and knotty: lea af-blades uch as 7 c 
wide, ur on E bran Eon "uud alee 
panicle 30-60 em. long: spikelets about 12 
Tex., Calif., and Va. Nat. of Eu.—(W. I., 
ex., C. A., S. A.) 
82. PHEAGMITES ge Perennial reeds with broad linear flat blades 
and large terminal pan Spikelets e flowered, the rachilla clothed 
with long silky hairs, apne ulating above the glumes and at base of each 
joint between the florets, the lowest floret one or ae MNA 3-nerved 
or the upper 5-nerved, lanceolate, acute, the upper shorter than the florets, the 
lower about half lon . the upper 
lemmas narrow, rani e ue 4 A 
3-nerved, the florets successively smaller, the YL Y 
su ts of all about equal: palea much 
mmits o 
shorter than the lemma.—tThree species, the 
following cosmopolitan. 
1. P. Phragmites (L.) 
: 1 ch as 5 cm. wide: 
eps 15—40 em. long: spikelets 234 
mm. long. [P. communis Trin. ]}—(COMMON- 
EED. )—Marshes, swamps, and wet SM 
various dao nearly "throughout e S. 
Can W. I., I - 
and - 7 ex he A., S. A., O. W. cd deus arundinacea (L.) 
Heuw. has escaped in v pl aces in B Cla. It a large reed resembling 
Phragmites; PORNO woolly at the throat: panicle 30 z 50 cm. long: spikelets 
4—8-flowered, 6-8 mm. long; lemmas long-villous on the margin, with 2 short 
f : 
rupe Hips with an awn between. Nat. of Madagascar and S. Asia. Cult. 
for ornament. 
83. TRIODIA R. Br. Erect tufted oda. rarely stoloniferous, the 
leaf-blades usually flat, the inflorescence an open or contracted panicle. Spike- 
lets several-flowered, the rachilla HOA ds above the glumes and between 
the florets: glumes hor cian en often thin, subequal, the first sometimes 
narrower, l-nerved or the second rarely 3- to 5-nerved, acute or acuminate: 
lemmas broad, rounded on the back, the apex from minutely emarginate or 
toothed to deeply and obtusely lobed, 3-nerved, the midnerve excurrent be- 
tween the lobes as a minute point, the lateral nerves near the margin often 
