familyPoaceae
subfamilyPoaceae subfam. Panicoideae
tribePoaceae tribe Paniceae
genusSetaria
subgenusSetaria subg. Setaria
speciesSetaria arizonica

Setaria arizonica

Rominger
James M. Rominger
Common names: Arizona bristlegrass
Treatment appears in FNA Volume 25. Treatment on page 552.
Please click on the illustration for a higher resolution version.
Illustrator: Annaliese Miller, Linda A. Vorobik

Copyright: Utah State University

Plants annual. Culms 25-50 cm; nodes pubescent. Sheaths glabrous, margins ciliate distally; ligules 1-2 mm, ciliate; blades 7-15 cm long, 5-8 mm wide, flat, scabrous, abaxial surface conspicuously hispid over the veins with papillose-based hairs, adaxial surface sparsely hispid over the veins; bristles solitary, 5-15 mm, flexible. Panicles 5-12 cm, loosely spicate; rachises scabrous. Spikelets 1.8-2 mm. Lower glumes about 1/3 as long as the spikelets, 3-veined, lateral-veins coalescing with the central vein below the apices; upper glumes about 2/3 as long as the upper lemmas, 5-veined, obtuse; lower paleas equaling the lower lemmas, broad; upper lemmas very strongly and coarsely transversely rugose; upper paleas similar to the upper lemmas. 2n = unknown.

Distribution

Ariz.

Discussion

Setaria arizonica is locally abundant in sandy washes on both sides of the Arizona-Sonora border, southwest of Tucson.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Setaria arizonica"
RDF feed
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Abaxial surface pubescence
hispid +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +
Adaxial surface pubescence
hispid +
Anther quantity
3 +
Anther shape
not penicillate +
Arm cell presence
absent +
Arm cell quantity
anatomy +  and kranz +
Auricle presence
absent +
Author
James M. Rominger +
Authority
Rominger +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn quantity
single +
Back shape
keeled +  and rounded +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
divergent +  and parallel +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
membranous +
Base width
thick +
Blade architecture
twisted +
Blade architecture or arrangement
non-radiate +  and radiate +
Blade architecture or arrangement or shape or vernation
plicate +
Blade architecture or shape
folded +
Blade length
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Blade position
adaxial +
Blade prominence or shape
flat +
Blade pubescence or relief
scabrous +
Blade shape
usually linear +  and lanceolate occasionally ovate +
Blade shape or vernation
involute +
Blade some measurement
20 cm200 mm <br />0.2 m <br /> (?) +
Blade width
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Branch architecture
secund +
Branch height or length or size
short +
Branch quantity
single +
Branch shape
spikelike +
Branch some measurement
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Bristle architecture or arrangement or growth form
solitary +
Bristle duration
persistent +
Bristle fragility
Pliable (?) +
Bristle quantity
1;several +
Bristle shape
Terete (?) +
Bristle some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Callus development
not developed +
Caryopsis architecture or shape
cleft +
Caryopsis presence
absent +
Caryopsis shape
compressed +, ellipsoid +  and subglobose +
Caryopsis size
small +
Cilium length or size
sometimes longer +
Common name
Arizona bristlegrass +
Culm architecture
branched +  and solid +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm growth form or orientation
decumbent +
Culm orientation
decumbent +  and erect +
Culm some measurement
25 cm250 mm <br />0.25 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Culm texture
woody +
Distal cell length or size
long +
Distal cell size or width
narrow +
Distribution
Ariz. +
Embryo quantity
1/2 +
Embryo shape
waisted +
Embryo size
large +
Endosperm texture
hard +
Filament shape
capillary +
Flap character
germination +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
3 +
Floret length or size
sometimes longer +
Floret palea development
well-developed +
Floret palea presence
absent +
Floret palea size
reduced +
Floret quantity
2 +
Floret reproduction
bisexual +
Floret shape
compressed +  and terete +
Fusoid cell presence
absent +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume quantity
2 +
Glume size
unequal +
Glume texture
membranous +
Glume variability
equal +
Hair architecture
papillose-based +
Hair architecture or shape
awned +
Hair quantity
lacking +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Linda A. Vorobik +  and Annaliese Miller +
Inflorescence architecture
bracteate +  and ebracteate +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Internode architecture
solid +  and hollow +
Internode length
elongated +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Leaf position
cauline +  and basal +
Lemma architecture or shape
awned +
Lemma coloration
hyaline +
Lemma texture
coriaceous +
Ligule architecture or pubescence or shape
ciliate +
Ligule presence
absent +
Ligule some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ligule texture
membranous +
Lodicule fusion
free +
Lodicule height or length or size
short +
Lodicule presence
absent +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
cuneate +
Lodicule texture
fleshy +
Lower floret architecture
staminate +
Lower floret reproduction
sterile +
Lower floret size
reduced +
Lower glume architecture
3-veined +
Lower glume architecture or shape
not saccate +
Lower glume quantity
1/3 +
Lower glume texture
membranous +
Lower lemma architecture
5-7-veined +
Lower lemma presence
absent +
Lower lemma size
not constricted +
Lower lemma texture
indurate +  and membranous +
Lower lemma variability
equaling +
Lower palea coloration
hyaline +
Lower palea texture
membranous +
Lower palea width
broad +
Margin architecture or pubescence or shape
ciliate +
Margin arrangement
separated +
Margin coloration
hyaline +
Margin prominence or shape
flat +
Margin shape or vernation
involute +
Microhair presence
absent +
Midrib architecture
complex +  and simple +
Node prominence
concealed +  and prominent +
Node pubescence
pubescent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea shape
keeled +
Panicle architecture
spicate +
Panicle architecture or fragility
loose +
Panicle condition or size
contracted +
Panicle density
dense +
Panicle location
subterranean +
Panicle shape
spikelike +
Panicle some measurement
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Papilla presence
absent +
Pedicel quantity
1 +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Rachis prominence
evident +
Rachis pubescence or relief
scabrous +
Reference
None +
Secondary position
higher +
Sheath architecture
open +
Sheath condition
closed +
Sheath pubescence
glabrous +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25 1412.xml +
Spike architecture
complex +
Spike arrangement
bisexual +
Spike reproduction
unisexual +
Spikelet architecture
subsessile +  and short pedicellate +
Spikelet arrangement
in triplets +  and paired +
Spikelet character
length +
Spikelet condition
intact +
Spikelet fixation
attached +
Spikelet life cycle
falling +
Spikelet position
subtending +
Spikelet presence
absent +
Spikelet quantity
1 +
Spikelet reproduction
unisexual +  and bisexual +
Spikelet shape
acutish +  and obtuse +
Spikelet some measurement
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Spikelet variability
varying +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +
Stigma coloration
red +
Style-branch arrangement
close +
Style-branch atypical quantity
4 +  and 1 +
Style-branch fusion
fused +  and free +
Style-branch quantity
2 (?) +
Style coloration
red +  and white +
Style fusion
fused +  and free +
Style quantity
2 +
Subsidiary-cell shape
dome--shaped +  and triangular +
Synonyms
Gramineae +
Taxon family
Poaceae +
Taxon name
Setaria arizonica +
Taxon parent
Setaria subg. Setaria +
Taxon rank
species +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper floret reproduction
bisexual +
Upper glume architecture
5-veined +
Upper glume presence
absent +
Upper glume quantity
2/3 +
Upper glume shape
obtuse +
Upper glume size
subequal +
Upper glume texture
membranous +  and herbaceous +
Upper lemma architecture or pubescence or relief
smooth +
Upper lemma life cycle
maturity +
Upper lemma quantity
1/2 +
Upper lemma relief
rugose +
Upper lemma texture
indurate +
Upper lemma variability
equaling +
Upper palea architecture or pubescence or relief
smooth +
Upper palea relief
rugose +
Upper palea texture
indurate +
Vein life cycle
maturity +
Vein presence
absent +
Vein quantity
2 (?) +
Vein shape
not keeled +
Vein size
reduced +
Volume
Volume 25 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
annual +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism growth form or texture
herbaceous +
Whole organism reproduction
dioecious +, monoecious +  and synoecious +
Whole organism variability
various +
X chromosome atypical quantity
14 +, 12 +  and 7 +
X chromosome quantity
9 +