familyPoaceae
subfamilyPoaceae subfam. Chloridoideae
tribePoaceae tribe Cynodonteae
genusLeptochloa
speciesLeptochloa fusca
subspeciesLeptochloa fusca subsp. uninervia

Leptochloa fusca subsp. uninervia

(J. Presl) N. Snow
Neil Snow
Common names: Mexican sprangletop
Synonyms: Leptochloa uninervia
Treatment appears in FNA Volume 25. Treatment on page 56.
Please click on the illustration for a higher resolution version.
Illustrator: Karen Klitz, Linda A. Vorobik

Copyright: Utah State University

Culms (15) 25-110 cm, more or less erect, often branch¬ing from the aerial nodes. Blades usually densely scabrous on both surfaces, not exceeding the panicle. Panicles 10-57 cm long, (0.5) 3-18 cm wide, often ellipsoidal, usually completely exserted from the upper¬most leaf-sheaths; branches 2-11 cm, mostly ascending. Spikelets 5-10 mm. Lower glumes 1-2.6 mm, narrowly triangular to ovate; upper glumes 1.8-2.8 mm, obovate to widely obovate; lemmas 2-3.6 mm, light-brown, dark green, or lead-colored, usually without a basal dark spot, apices usually truncate or obtuse, rarely broadly acute, sometimes bifid, sometimes mucronate; anthers 3, 0.2-0.6 (1) mm. Caryopses 1-1.5 mm.

Discussion

Leptochloa fusca subsp. uninervia is native from the southern United States to Argentina. It may be confused with L. scabra, from which it usually differs in its truncate or obtuse lemmas.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Leptochloa fusca subsp. uninervia"
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2n chromosome quantity
20 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial cell structure in adjective form
stomatal +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule length or size
longer +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +
Anther atypical some measurement
1 cm10 mm <br />0.01 m <br /> (?) +
Anther quantity
3 +
Anther some measurement
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Apex architecture or shape
bifid +
Apex shape
mucronate +, acute +, obtuse +  and truncate +
Apex shape or architecture
emarginate to bifid +
Apical cell height or length or size
short +
Apical cell width
Wide (?) +
Arm cell anatomy
kranz +
Arm cell presence
absent +
Auricle presence
absent +
Author
Neil Snow +
Authority
(J. Presl) N. Snow +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn quantity
multiple +, , +  and single +
Back shape
keeled +  and rounded +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
not fused +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
membranous +
Base width
thick +
Blade architecture
not pseudopetiolate +
Blade architecture or arrangement
radiate +
Blade orientation
Usually ascending (?) +  and Erect (?) +
Blade position
adaxial +
Blade prominence or shape
flat +
Blade pubescence
pubescent +  and glabrous +
Blade pubescence or relief
scabrous +
Blade shape
usually linear +  and lanceolate occasionally ovate +
Blade shape or vernation
involute +
Branch architecture
subdigitate +, digitate +  and non-disarticulating +
Branch arrangement
racemose +
Branch atypical some measurement
22 cm220 mm <br />0.22 m <br /> (?) +
Branch orientation
ascending +
Branch quantity
3;35 +
Branch shape
spikelike +
Branch some measurement
2 cm20 mm <br />0.02 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Callus development
developed +
Callus fusion
distinct +
Callus pubescence
pubescent +  and glabrous +
Caryopsis fusion
free +
Caryopsis life cycle
falling +
Caryopsis shape
elliptic +  and ovate or obovate +
Caryopsis some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Cell shape
triangular +  and dome--shaped +
Cilium architecture or pubescence or shape
ciliate +
Cilium length or size
sometimes longer +
Cilium texture
membranous +
Column quantity
single +
Common name
Mexican sprangletop +
Culm architecture
hollow +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
15 +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm growth form or orientation
prostrate +
Culm orientation
erect +
Culm shape
geniculate +
Culm some measurement
25 cm250 mm <br />0.25 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Mo. +, N.J. +, Conn. +, N.Y. +, Wash. +, Del. +, D.C. +, Wis. +, Pa. +, W.Va. +, Maine +, N.H. +, Pacific Islands (Hawaii) +, Fla. +, Wyo. +, Puerto Rico +, N.Mex. +, Tex. +, La. +, N.C. +, Mass. +, Tenn. +, Ariz. +, Calif. +, Virgin Islands +, R.I. +, Nev. +, Va. +, Colo. +, Miss. +, Oreg. +, Ala. +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, S.C. +, Ark. +, Vt. +, Ill. +, Ga. +, Ind. +, Iowa +, Idaho +, Md. +, Ohio +, Utah +, Minn. +, Mich. +, Mont. +, B.C. +, Ont. +, Que. +  and Ky. +
Embryo architecture or shape
cleft +
Embryo presence
absent +
Embryo shape
not waisted +
Embryo size
large +
Endosperm texture
hard +
Filament shape
capillary +
Flag; flag blade length
3 cm30 mm <br />0.03 m <br /> (50 cm500 mm <br />0.5 m <br />) +
Flag; flag blade pubescence
scabrous +  and glabrous +
Flag; flag blade width
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Floret architecture
not disarticulating +
Floret arrangement
adjacent +
Floret atypical quantity
20 +  and 2 +
Floret height or length or size
shorter +
Floret length or size
sometimes longer +
Floret quantity
6 +  and 20 +
Floret reproduction
bisexual +
Floret shape
round +  and compressed +
Floret size
reduced +
Fusoid cell presence
absent +
Genus quantity
1 +
Glume architecture
1-veined +
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 shape
rounded +  and weakly keeled +
Glume size
subequal +  and unequal +
Glume texture
membranous +
Group quantity
3 +
Hair quantity
lacking +
Hair relief
coarse +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum height or length or size
short +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Linda A. Vorobik +  and Karen Klitz +
Inflorescence architecture
pistillate +
Inflorescence arrangement
paniculate +  and racemose +
Inflorescence fusion
distinct +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Internode architecture
hollow +
Internode shape
elongate +
Layer presence
not absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Leaf position
cauline +
Lemma architecture
3(5)-veined +
Lemma architecture or shape
awned +
Lemma coloration
lead-colored +, dark green +  and light-brown +
Lemma pubescence
pubescent +
Lemma some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
Lemma texture
membranous +
Ligule architecture or pubescence or shape
ciliate +
Ligule atypical some measurement
15 +
Ligule length or size
sometimes longer +
Ligule presence
absent +
Ligule shape
lacerate +  and attenuate +
Ligule some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Ligule texture
membranous +
Lodicule presence
absent +
Lodicule prominence
inconspicuous +
Lodicule quantity
2 +
Lower glume atypical some measurement
4.9 +
Lower glume shape
narrowly triangular +  and ovate +
Lower glume some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Marginal hair arrangement
adjacent +
Marginal hair fragility
stiff +
Marginal hair relief
coarse +
Microhair presence
absent +
Midrib architecture
simple +
Node location
aerial +
Node prominence
concealed +  and prominent +
Node pubescence
glabrous +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary pubescence
glabrous +
Palea coloration
hyaline +
Palea pubescence
sericeous +
Palea shape
keeled +
Palea size
subequal +
Palea texture
membranous +
Panicle architecture
simple +
Panicle branch height or length or size
short +
Panicle length
10cm +  and 57cm +
Panicle shape
ellipsoidal +
Panicle width
3 cm30 mm <br />0.03 m <br /> (18 cm180 mm <br />0.18 m <br />) +
Pericarp architecture or fragility
loose +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp fusion
free +
Pericarp texture
dry +  and fleshy +
Primary inflorescence position or structure subtype
terminal +
Raceme shape
spikelike +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Row quantity
2 +
Secondary panicle position
axillary +
Secondary panicle presence
absent +
Secondary panicle prominence
concealed +
Sheath architecture
open +
Sheath condition
closed +
Sheath position
upper +
Sheath pubescence
scabrous +  and glabrous +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V25/V25 89.xml +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet arrangement
distant +  and tightly imbricate +
Spikelet atypical some measurement
14 +
Spikelet fixation
attached +
Spikelet position or shape
distal +
Spikelet presence
absent +
Spikelet pubescence
pubescent +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
sterile +
Spikelet shape
rounded +  and slightly keeled +
Spikelet some measurement
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
compound +  and simple +
Starch-grain presence
absent +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style arrangement
separate +
Style quantity
2 +
Synonyms
Leptochloa uninervia +
Taxon architecture
staminate +
Taxon family
Poaceae +
Taxon name
Leptochloa fusca subsp. uninervia +
Taxon parent
Leptochloa fusca +
Taxon rank
subspecies +
Taxon reproduction
dioecious +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume shape
obovate +  and widely obovate +
Upper glume some measurement
0.18 cm1.8 mm <br />0.0018 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
Vein presence
absent +
Vein pubescence or relief
scabrous +
Vein quantity
7 (?) +  and 13 (?) +
Vein size
major +
Volume
Volume 25 +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +  and annual +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
Whole organism reproduction
dioecious +, monoecious +  and synoecious +
Whole organism variability
varied +
X chromosome atypical quantity
12 +
X chromosome quantity
10 +