POACEAE 37 
e XIII. BAMBUSEA | 
Gregarious woody grasses "o aa branching oe 101. ARUNDINARIA. 
1. TRIPSACUM L. Robust perennials, with m cious terminal and 
axillary inflorescences, of 1, 2, or 3 spikes, the ue tae , breaking up 
into bony seed-like joints, the staminate above on the same achis, deciduous 
hole. Staminate spikelets 2-flowered, in pai ontinuous rachis, 
one sessile, the other sessile or pedisollato. ’ Pistüllate pao single at each 
joint of the thick, hard, articulate lower part of the same rachis, sunken in 
hollows in the joints, consisting of one perfect floret and a sterile lemma; 
first glume EE nearly enfolding the spikelet, fitting into and closing 
the hollow of the rachis: second glume similar to the first but smaller, enfold- 
ing the arura of the spikelet: sterile and fertile lemmas and palea hya- 
line.—About 7 species in temperate and tropical America.—GAMA-GRASSES. 
Leaf-blades 1- : em. wide, flat: plant 1-2 m. tall. 1. T. dactyloides. 
Leaf-blades 1-3 mm. w ride, more or less involute: plant less than 
T. floridanum. 
1. T. dactyloides L. Plant commonly 2-4 m. tall: leaf- blades more or less 
auricled at the base: rachis of the pistllats spike 5-6 mm. in diameter 
terminal spikes usually 2-3 together, the z A 
n 
ple s stigmas s showy during anthesis.—Mois 
ie riverbanks, pond-margins, and ham- 
mocks, | various provinees, ore us E Tex. 
LÍ and R. I.— S. A.)— 
fall, or I year r S Used ‘for are 
Puch abundan 
T. floridanum Porter. Smaller than T 
Eve 
glade Keys, and adj. Eq suh Fla. imt Florida Keys.—All year. 
2. HUCHLAENA Schrad. Tall monoecious annuals or perennials, with 
broad leaf-blades and i sheaths. Staminate spikelets 2- d i in pairs, 
unequally pedicellate, on a simple rachis: racemes several, in a terminal corym- 
biform panicle.  Pisti A spikelets sin 
T, 
closed in the a sheaths.— Three species, 
natives of Mex. 
1. E. mexicana Sehrad. Stem up to 5 m. 
tall: leaf-blades elongate- de l m. 
long or less, up to 8 em. wide: staminate 
racemes mostly 10-15 em g, pike- 
UZTI 
in trapezoid joints: spikelets abou 
long.— (TEOSINTE. )—-Waste Beet: d cult vate grounds, Fla. Nat. of Mex. 
