familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Meliceae
genusGlyceria
sectionGlyceria sect. Hydropoa

Glyceria sect. Hydropoa

(Dumort.) Dumort.
Mary E. Barkworth, Laurel K. Anderton
Treatment appears in FNA Volume 24. Treatment on page 71.

Plants perennial. Sheaths not or only slightly compressed, midvein sometimes conspicuous distally. Panicles 12-30 cm wide, usually open; branches divergent to strongly divergent and drooping; pedicels 0.8-15 mm. Spikelets oval in side view, lengths 1-4 times widths, somewhat laterally compressed, usually not appressed to the panicle branches. Lemmas with apices acute to rounded or truncate, more or less flat to slightly prow-shaped; paleas keeled, keels not winged, truncate to notched between the keels; lodicules wholly to partially connate; anthers 1, 2, or 3. Caryopses ovoid-oblong; hila ovoid to oblong.

Discussion

Glyceria sect. Hydropoa includes approximately five species. Three species grow in the Flora region; one is introduced. They grow along streams and at the edges of lakes and ponds.

Selected References

None.

Lower Taxa

"decumbent" is not a number.

... more about "Glyceria sect. Hydropoa"
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Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
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 +
Anther atypical quantity
1 (?) +
Anther quantity
3 +, 2 +  and 1 +
Apex architecture or relief
erose +
Apex architecture or shape
entire +  and truncate +
Apex shape
acute +  and rounded or truncate more or less flat +
Arm cell presence
absent +
Auricle presence
absent +
Author
Mary E. Barkworth +  and Laurel K. Anderton +
Authority
(Dumort.) Dumort. +
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 prominence
evident +
Blade shape
folded +  and flat +
Branch arrangement
divergent +  and strongly divergent +
Branch fixation or orientation
appressed +
Branch orientation
drooping +
Branch shape
plumose +
Callus pubescence
glabrous +
Callus shape
blunt +
Culm architecture
not cormous +  and 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 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 +
Distal floret quantity
1 (3) +
Distal floret size
reduced +
Distribution
N.C. +, Conn. +, N.J. +, N.Y. +, Wash. +, W.Va. +, Del. +, D.C +, Wis. +, Ariz. +, N.Mex. +, Pacific Islands (Hawaii) +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, Wyo. +, Tex. +, La. +, Iowa +, Minn. +, Oreg. +, Tenn. +, S.C. +, Pa. +, Ill. +, Ind. +, Md. +, Mich. +, Miss. +, Mont. +, N.Dak. +, Nebr. +, S.Dak. +, Utah +, Okla. +, Calif. +, Nev. +, Va. +, Colo. +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ala. +, Kans. +, Ark. +, Ga. +, Idaho +, Ohio +, Mo. +, Alaska +  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
2 +  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
acute +  and obtuse +
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
Ovoid (?) +  and Oblong (?) +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Internode architecture
hollow +
Internode presence
absent +
Keel architecture
not winged +
Keel shape
truncate +  and notched +
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 shape
acute +  and rounded or truncate more or less flat +
Lemma texture
membranous +  and thinly coriaceous +
Lemma variability
equaling +
Ligule architecture or relief
erose +
Ligule presence
absent +
Ligule shape
lacerate +
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 some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Midrib architecture
simple +
Midvein prominence
conspicuous +
Node prominence
concealed +  and prominent +
Number of lower taxa
3 +
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 architecture
open +
Panicle width
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Papilla presence
absent +
Pedicel some measurement
0.08 cm0.8 mm <br />8.0e-4 m <br /> (1.5 cm15 mm <br />0.015 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 shape
compressed +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 77.xml +
Spike architecture
ebracteate +
Spikelet arrangement
mixed +
Spikelet fixation
attached +
Spikelet fixation or orientation
appressed +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
sterile +
Spikelet shape
compressed +  and oval +
Spikelet some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
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
Gramineae +
Taxon family
Poaceae +
Taxon name
Glyceria sect. Hydropoa +
Taxon parent
Glyceria +
Taxon rank
section +
Terminal floret reproduction
sexual +
Terminal floret size
reduced +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume some measurement
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Vein architecture
winged +
Vein arrangement
converging +
Vein presence
absent +
Vein prominence
prominent +  and evident +
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 +