88 POACEAE 
about dias the latter with a palea or stami- 
nate flow fertile lemma chartaceous.— 
Five Eee except the following, on the 
islands of the Pacific Ocean. 
l. S. secundatum (Walt.) a Ps 
tall: pe? pen usually Ei than 15 em. 
long, 4-10 wide: mes em 
5-10 : 
long. mi Puy Schran k]—(ST. Av- 
GUSTINE-GRASS. di NING CRAB-GRASS.)— 
Moist loamy or ee soil, mostly on or 
near beaches, cee Plain, Fla. to p. ex. 
nd S. ae 
W. I., Mety C. A., S. A., O. W.) 
—Commonly cult. for lawns in Y. States, 
inna in Fla. 
37. AMPHICARPON Kunth. Erect annuals or perennials, with stiff 
flat blades and narrow terminal panicles. Spikelets of two kinds on the same 
plant, one in a terminal panicle, perfect but not fruitful, the id oid 
gamous on slender leafless subterranean branehes from the base of t 
sometimes also from the lower nodes: first glume of the aerial en 
variable in size, sometimes obsolete: second glume and sterile lemma about 
equal; lemma and palea indurate, the margins of the lemma thin and flat: 
fruiting spikelets much larger, first glume wanting: second glume and sterile 
lemma strongly nerved, subrigid, exceeded at maturity by the cae elliptic 
acuminate fruit with strongly indurate lemma and palea, the margins of the 
lemma thin and flat: stamens with small anthers on short eee 
species, confined to the eastern United States. 
Blades conspicuously dps 5 A. Amphicarpon. 
Blades glabrous or nearly s . A. floridanum. 
A. Amphicarpon (Pursh.) Nash. Annual: stem erect, 30—80 em. tall, the 
leaves crowded toward the base: leaf-blades erect, 10-15 em. long, 5-15 mm. 
wide, sharp-po om panicle narrow, 3-20 
g: spikelets elliptic, 4—5 lo 
subterranean spikelets 7-8 mm. long, plu 
. long, plump. 
[ A. ae Kunth]—Sandy  pinelands, 
Coastal Plain, Ga. to N. J. (Ga., accord- 
ing to Ghee n.) 
2. A. n E Chapm. eae stem 
usually decumbent at base, 30-100 em. tall, 
the leaves EU d along ‘the stem ; "blades 
firm, white- d when At mostly less 
than 10 em. long, 5-10 mm. wide: panicles 
long-e Ced narrow, Pour Mun. id 
lets narr rowly lanceolat e, 6-7 m lon 
subterranean spikelets 6-9 mm. —Low pine- 
lands, Coastal Plain, la. to S. C. 
0 
38. OLYRA L. Tall monoecious perennials, with broad flat leaf-blades 
which are contracted into a petiole-like base, and terminal or axillary panicles. 
