POACEAE | 41 
swamps, wet hammocks, and marshes, Coastal Plain, Fla. to E Tex. and 
N. J 1 I.) 
5. E. strictus Baldw. Stem 1-2 m. tall, dps the nodes hirsute with stiff 
erect vee hairs: panicle 20—40 cm. long, oe = branches closely ap- 
abo abou 
pressed: spikelets ut 8 mm. long, scabrous, the a raight, about 1.5 em. . 
long.—Moist soil, marshes, low. thickets and bads of a. Coastal Plain and 
rarely adj. provinces, Fla. to Tex., S Mo., Tenn., and S. C. 
MANISURIS L. Slender rather tall perennials or annuals with nip. 
numerous smooth cylindrie or flattened spikes or racemes, single on the s and 
branches. Spikelets awnless in pairs at the nodes of a thickened eru te 
rachis, one sessile and "ni the other pedicellate and sterile, the pedicel thick- 
ened and appressed to the rachis, the sessile spikelet fitting closely ires the 
rachis, forming a cylindric or subcylindric raceme: glumes obtuse, the first 
coriaceous, fitting over the hollow containing the spikelet, the second less 
coriaceous than the first; sterile and fertile lemmas ie palea hyaline: pedicel- 
late spikelet reduced, often rudimentary. [Rdttboellia L. f.]|—About 20 species, 
natives of the warm temperate and tropical regions of both hemispheres. Of 
little economic importance. | "E 
pn perennial. 
E eu not compressed-keeled: first glume more or less 
1. M. campestris 
Le e sheath compressed-keeled: first glume tessellated or 
wrinkled, rarely smooth. 
First glume tessellated, the depressions rectangular. 2. M.tessellata. 
First glume wrinkled, tubercled, or smooth. 
Glume bearing prominent transverse wrinkles. 3. M. rug 
Glume bearing a few low tubercles or smooth. 4. M. tuberculosa, 
Plant annual. 5. M. ex 
1. campestris (Nutt.) A. Hitche. Stem 0.3-1 tall, ad. rather slender, 
. producing short rootstocks: leaf-blades 1-2 mm. wide: raceme 5—15 em. long, 
u 
pestris Nutt R. cylindrica Chapm. M. cylin- i 
drica  Kuntze]—Pinelands and Lr es, 
Coastal Plain, Fla. to E Tex. S Mo., 
S. C. 
2. m tessellata (Steud.) Scribn. Stem 
0.8—1.2 m. tall, rather ae Bi 5-12 
. lo Rs deis about .long. [R. 
corrugata Chapm. ]—Moist a. Coastal 
Plain, Fla. to EZ and Ala. 
- M. ipis (Nutt. Kuntze. Stem 0.7—1.2 
tall: raceme 5-8 cm. long: first o 
win h prominent unc e ridges. [M.C 
ash k. rugosa Nutt.]—Wet edo 
ed Plain, Fla. to E Tex. and S N. J. 
4. M. tuberculosa Nash. Similar to M. rugosa; but the first glume with a few 
short ridges or low tubercles, these sometimes obscure or wanting, the glume 
then smooth and shining. —Lake shores and about ponds, pen. Fla. 
. M. exaltata (L. f.) Kun Stem stout, ps m. tall or En pipe 
leaf-sheaths hispid; leaf- blades glongate l- 2. o em. wide: mes numerous, ` 
more or less included at base, dwindling at the summit HAT Dons abortive 
ye ~ di glume of sessile spikelet smooth.—Moist soil, S Fia. Nat. 
f S Asia. (W. I.) 
