familyPoaceae
subfamilyPoaceae subfam. Panicoideae
genusSetaria
subgenusSetaria subg. Setaria
speciesSetaria viridis
varietySetaria viridis var. major
Setaria viridis var. major
Common names: Giant green foxtail
Synonyms: Setaria viridis var. robustapurpurea
Treatment appears in FNA Volume 25. Treatment on page 556.
Culms 1-2.5 m; nodes 7-12. Blades 10-25 mm wide. Panicles 10-20 cm, producing around 4,000-6,000 caryopses; lower branches about 3 cm, producing a lobed appearance. Spikelets morphologically indistinguishable from those of var. viridis. 2n = 18.
Distribution
N.J., Tex., Mo., N.C., Mich., Wis., Tenn., N.Y., Pa., Ill., Ky., Oreg.
Discussion
Setaria viridis var. major is a major adventive weed in corn and bean fields of the midwestern United States, dwarfing var. viridis in stature.
Selected References
None.
Lower Taxa
None.
"decumbent" is not a number.
... more about "Setaria viridis var. major"
absent +
common +
absent +
bulliform +
absent +
membranous +
not penicillate +
lobed +
absent +
absent +
arising +
single +
membranous +
thick +
twisted +
folded +
adaxial +
glabrous +
scabrous +
involute +
20 cm200 mm <br />0.2 m <br /> (?) +
secund +
single +
spikelike +
green +
persistent +
scabrous +
not developed +
absent +
small +
sometimes longer +
Giant green foxtail +
annual +
climbing +
floating +
decumbent +
woody +
narrow +
1/2 +
waisted +
large +
hard +
capillary +
germination +
adjacent +
sometimes longer +
well-developed +
absent +
reduced +
bisexual +
absent +
shorter +
shorter or longer +
subtending +
unequal +
membranous +
equal +
lacking +
uncinate +
punctate +
Present +
axillary +
elongated +
absent +
distichous +
hyaline +
coriaceous +
absent +
membranous +
free +
absent +
inconspicuous +
glabrous +
cuneate +
fleshy +
3 cm30 mm <br />0.03 m <br /> (?) +
staminate +
sterile +
reduced +
3-veined +
not saccate +
triangular-ovate +
membranous +
5-veined +
absent +
not constricted +
hyaline +
membranous +
separated +
hyaline +
involute +
absent +
glabrous +
absent +
glabrous +
keeled +
spicate +
contracted +
dense +
subterranean +
nodding +
spikelike +
absent +
separating +
evident +
higher +
open +
closed +
glabrous +
scabridulous +
Introduced +
complex +
bisexual +
unisexual +
length +
intact +
attached +
falling +
subtending +
absent +
indistinguishable +
varying +
simple +
Setaria viridis var. major +
Setaria viridis +
variety +
hyaline +
membranous +
bisexual +
5-6-veined +
elliptical +
absent +
subequal +
5-6-veined +
pale green +
maturity +
rugose +
indurate +
equaling +
rugose +
indurate +
maturity +
absent +
not keeled +
rhizomatous +
annual +
herbaceous +
various +