familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Meliceae
genusGlyceria
sectionGlyceria sect. Glyceria
speciesGlyceria septentrionalis
varietyGlyceria septentrionalis var. septentrionalis

Glyceria septentrionalis var. septentrionalis

Mary E. Barkworth, Laurel K. Anderton
Treatment appears in FNA Volume 24. Treatment on page 83.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Ligules 5-10 mm; blades 2-15 mm wide. Panicle branches 3-17 cm, with 1-9 spikelets. Rachilla internodes 1.1-1.8 mm. Lemmas scabrous over the veins, prickles about 0.05 mm, scabrous or scabridulous between the veins, apices almost truncate to obtuse or acute, apical margins crenate to entire. 2n = 40.

Discussion

Glyceria septentrionalis var. septentrionalis grows throughout the range of the species, but is less common in the lower floodplain of the Mississippi River and Kentucky than var. arkansana. It is found in shallow water or wet soils. In reviewing specimens for this treatment, some were found to have acute lemmas that usually exceeded the paleas, and lemma midveins that were clearly longer than the other veins; others had truncate to obtuse lemmas that were usually shorter than or equaling the paleas, and lemma midveins that were barely longer than the lateral veins. Further study is needed to determine whether the two kinds merit separate recognition.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Glyceria septentrionalis var. septentrionalis"
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2n chromosome quantity
40 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Abaxial surface pubescence or relief
scabrous +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Adaxial surface pubescence
glabrous +
Adaxial surface relief
scabridulous +
Anther atypical quantity
1 (?) +
Anther quantity
3 +
Anther some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Apex architecture or relief
erose +
Apex architecture or shape
bifid +
Apex shape
truncate +  and obtuse or acute +
Arm cell presence
absent +
Auricle presence
absent +
Author
Mary E. Barkworth +  and Laurel K. Anderton +
Authority
Hitchc. +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn orientation
arising +
Awn position
basal +  and apical +
Awn quantity
single +
Back shape
keeled +  and rounded +
Band coloration
purplish +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base duration
persistent +
Base fusion
fused +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade length
18 cm180 mm <br />0.18 m <br /> (32 cm320 mm <br />0.32 m <br />) +
Blade prominence
evident +
Blade shape
folded +  and flat +
Blade width
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Branch architecture or arrangement
lax +
Branch arrangement
divergent +
Branch course
straight +
Branch fixation or orientation
appressed +
Branch orientation
spreading;usually erect;strongly ascending +
Branch shape
plumose +
Branch some measurement
3 cm30 mm <br />0.03 m <br /> (17 cm170 mm <br />0.17 m <br />) +
Branch width
0 cm0 mm <br />0 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Callus pubescence
glabrous +
Callus shape
blunt +
Culm architecture
rooting +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
10 +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm growth form or orientation
decumbent +
Culm height
73 cm730 mm <br />0.73 m <br /> (182 cm1,820 mm <br />1.82 m <br />) +
Culm orientation
decumbent +  and erect +
Culm some measurement
20 cm200 mm <br />0.2 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
Culm texture
not woody +
Culm thickness
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Distal floret quantity
1 (3) +
Distal floret size
reduced +
Distribution
Conn. +, N.J. +, N.Y. +, Va. +, W.Va. +, Del. +, D.C. +, Wis. +, Ont. +, Que. +, Fla. +, N.H. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Mass. +, Maine +, R.I. +, Ala. +, Ark. +, Ill. +, Ga. +, Ind. +, Iowa +, Okla. +, Md. +, Ohio +, Mo. +, Minn. +, Mich. +, Miss. +  and Ky. +
Embryo quantity
0 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +
Floret arrangement
amalgamated +
Floret length or size
sometimes longer +
Floret quantity
8 +  and 16 +
Floret reproduction
sterile +
Floret shape
compressed +
Floret size
reduced +
Glume architecture
1-veined +
Glume architecture or relief
erose +
Glume architecture or shape
awned +
Glume height or length or size
shorter than to longer than the adjacent lemmas +
Glume position
subtending +
Glume presence
absent +
Glume quantity
2 +
Glume shape
elliptic +  and obovate +
Glume size
much smaller +
Glume texture
scarious +  and membranous +
Hair architecture
5-11-veined +
Hair shape
uncinate +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Cindy Roché +
Inflorescence architecture
compound +
Inflorescence arrangement
divergent +
Inflorescence position or structure subtype
terminal +
Inflorescence width
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Intercostal region pubescence
hispidulous +  and scabrous +
Internode architecture
hollow +
Internode presence
absent +
Keel architecture
winged +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture or shape
not +  and awned +
Lemma arrangement
adjacent +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma pubescence
hairy +, glabrous +, scabrous +  and smooth +
Lemma pubescence or relief
scabrous +
Lemma shape
rounded +
Lemma some measurement
0.24 cm2.4 mm <br />0.0024 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
Lemma texture
membranous +  and thinly coriaceous +
Lemma variability
equaling +
Ligule architecture or relief
erose +
Ligule presence
absent +
Ligule shape
lacerate +
Ligule some measurement
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Ligule texture
scarious +
Lodicule architecture
not winged +
Lodicule architecture or pubescence or shape
not ciliate +
Lodicule architecture or shape
truncate +
Lodicule fusion
connate +
Lodicule prominence
inconspicuous +
Lodicule quantity
2 +
Lodicule shape
lanceolate +
Lodicule texture
fleshy +
Lower glume atypical some measurement
0.3 +
Lower glume some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea architecture
2-veined +
Palea development
well-developed +
Palea presence
absent +
Palea shape
keeled +
Palea size
reduced +
Panicle branch some measurement
3 cm30 mm <br />0.03 m <br /> (17 cm170 mm <br />0.17 m <br />) +
Panicle length
15cm +  and 60cm +
Panicle width
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Papilla presence
absent +
Pedicel some measurement
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pseudopetiole presence
absent +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
3/4 +
Sheath relief
scabridulous +  and smooth +
Sheath shape
keeled +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 97.xml +
Special status
Endemic +
Spike architecture
ebracteate +
Spikelet arrangement
mixed +
Spikelet fixation
attached +
Spikelet fixation or orientation
appressed +
Spikelet length
1 cm10 mm <br />0.01 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Spikelet quantity
1 +  and 9 +
Spikelet reproduction
sterile +
Spikelet shape
rectangular +, terete +  and cylindrical +
Spikelet some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Spikelet width
1mm +  and 3mm +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Panicularia septentrionalis +
Taxon family
Poaceae +
Taxon name
Glyceria septentrionalis var. septentrionalis +
Taxon parent
Glyceria septentrionalis +
Taxon rank
variety +
Terminal floret reproduction
sexual +
Terminal floret size
reduced +
Tip shape
notched +, rounded +  and truncate +
Tissue coloration
hyaline +
Tissue texture
membranous +
Tooth some measurement
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Upper glume atypical some measurement
1.9 +
Upper glume some measurement
0.23 cm2.3 mm <br />0.0023 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
Vein architecture
winged +
Vein arrangement
converging +
Vein presence
absent +
Vein prominence
prominent +  and evident +
Vein pubescence
hispidulous +  and scabrous +
Vein quantity
2 (?) +
Vein shape
ridged +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome atypical quantity
8 +
X chromosome quantity
10 +