198 POACEAE 
2. U. paniculata L. Stems in dense clumps, 
stout, 100-150 em. tall: leaf- pg involute 
0-30 long: 
un 
pi 
© 
long.—(SEA-0AT. EACH- 
GRASS. e a sands and dunes, Coastal 
Me 
Plain, Fla. to Tex. and Va.—(W. I., Mez., 
C. A, 8. A.) (/ PN 
rN, 
3. U. longifolia Scribn. Stems in clumps, NS 
80—120 cm. tall: leaf-blades flat, 6-12 mm \ n 
e: pan 0-40 em. 1 the branches / à 
mostly distant, short and app ed, or t 
lower asee bes sI - aua 3—4-flowe dl 6 ! 
m. long: ong.—JDry S nay 
soil, woods, End m n ng Coastal Plain and adj. provinces, Fla. to 
Tex., Okla., and Va. 
a (L.) B Stem 60- 120 em. tall: leaf-blades 3-7 mm. wide: 
panico 15-40 em. iu. s slender branches erect: spikelets 3-6-flowered, 5—7 
mm. lon [U. gracilis Michx.]—Sandy soil, woods, swamps, n meadows and 
dins Coastal Plain and occasionally adj. provinces, Fla. to Tex., Okla. 
and Long Id., N. Y. Plants in elumps. 
5. U. ornithoryncha Steud. Stem 100—150 em. tall, ponent from short slender 
rootstocks: leaf-blades 4-7 mm. wide, rarely ove ri5c ong: pan d 4—8 cm 
long: spikelets 8—10 mm. long.—Low woods, Coastal Plain Ala. to 
6. U. nitida Baldw. Stem 50—150 cm. tall, from a pn rootstock: paniele 
10-15 em. long, the branches spreading or ascending: spikelets 1-1.5 e m. long.— 
Low woods and stream-banks, Coastal Plain, Fla. and S. o. 
89. DISTICHLIS Raf. Low dioecious Lite dan with extensively creep- 
ing sealy rootstocks, erect, rather rigid stem , and short dense rather few- 
Bower’ panicles: s spikelets several- to many- er re rachilla of the pistil- 
r 
int: lemmas closely imbrieate, firm, the pis ds coriaceous, the margins 
bowed out near TS acute or acutish, 3-nerved, with several intermediate 
nerves or striations: palea as lon 
lemma or shorter, the pistillate coriaceous.— 
Six species, mostly American.—SALT-GRASSES. 
SPIKE-GRASSES.  ALKALI-GRASSES. 
1. D. spicata (L.) Greene. Stem erect, 15- 
60 em. tall: leaf-sheaths overlapping, the 
blades usually conspicuously distichous, rig- 
idly ascending: panicle 2-6 cm. mare - spike- 
lets 8-18 mm. ine. [D. maritima Raf.]— 
(MARSH SPIKE-GRASS. mi agree along 
the coast, and alkaline soil in the interior, 
nearly throu ughout U. S.— 
C. A., S. A4.)— 
. Il, Mex 
—Briza minor L. has been incod: in Fla, Ala., and. S. C. It is 
