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Adnation position relational
past +
Anther dehiscence
dehiscing +
Anther fusion
distinct +
Apex shape
short-apiculate +, blunt +  and notched +
Author
Robert R. Haynes +  and C. Barre Hellquist +
Authority
(Persoon) Börner +
Base shape
acute +
Basionyms
Potamogeton filiformis +
Beak prominence
inconspicuous +
Blade atypical width
0.2 cm2 mm <br />0.002 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
Blade length
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Blade shape
linear;filiform +
Blade width
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Coil architecture
full +
Coil quantity
0 (1) +
Distribution
Greenland +, N.W.T. +, Yukon +, Alaska +, Europe +  and Asiaasia +
Elevation
0–915 m +
Embryo course
curved +
Flower presence
absent +
Flower reproduction
bisexual +
Flower some measurement
4 cm40 mm <br />0.04 m <br /> (?) +
Fruit architecture
drupaceous +
Fruit architecture or shape
not +  and beaked +
Fruit coloration
dark-brown +
Fruit length
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Fruit quantity
common +
Fruit shape
obovoid +
Fruit some measurement
4 cm40 mm <br />0.04 m <br /> (?) +
Fruit width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Habitat
Calcareous waters of ponds, lakes, and streams +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Inflorescence orientation
not projecting +
Inflorescence position
axillary +  and terminal +
Inflorescences spike location
submersed +
Inflorescences spike shape
cylindric +  and capitate +
Leaf architecture
sessile +
Leaf arrangement
alternate +
Leaf arrangement or course or shape
linear +
Leaf coloration
opaque +
Leaf growth form or location
floating +
Leaf location
submersed +
Leaf shape
acute +, turgid +  and channeled +
Leaf width
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Ligule fusion
distinct +
Ligule some measurement
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
Margin architecture or shape
entire +
Number of lower taxa
0 +
Ovule orientation
orthotropous +
Ovule position
marginal +
Panicle architecture
not pedunculate +
Peduncle arrangement
apart +
Peduncle atypical some measurement
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Peduncle fragility
pliable +
Peduncle orientation
erect +
Peduncle position or structure subtype
terminal +
Peduncle shape
filiform +
Peduncle size
slender +
Peduncle some measurement
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Phenology
Flowering summer. +
Pistil architecture
short-stipitate +  and stipitate +
Pistil quantity
4 +
Pollen shape
spheric +
Proximal portion architecture or fixation
clasping +
Publication title
Flora fur das deutsche Volk +
Publication year
1912 +
Reference
None +
Rhizome presence
absent +
Scar architecture
ligulate +
Scar arrangement or shape
circular +
Scar shape
auriculate +  and not auriculate +
Seed quantity
1 +
Series quantity
1 +
Sheath duration
not persisting +
Sheath length or size
longer +
Sheath shape
inflated +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/62857cf6bca5c4637d27b113da92d27dbf9962f4/V22/V22 526.xml +
Spike architecture or shape
capitate +
Spike shape
cylindric +  and moniliform +
Spike some measurement
0.5 cm5 mm <br />0.005 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
Stamen position
epitepalous +
Stamen quantity
4 +
Stem architecture
branching +
Stem atypical some measurement
60 cm600 mm <br />0.6 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Stem shape
subterete +
Stem some measurement
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Stipular shape
inflated +
Stipule atypical some measurement
4 cm40 mm <br />0.04 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
Stipule duration
persistent +
Stipule fusion
adnate +
Stipule quantity
2/3 +
Stipule shape
not tubular +
Stipule size
enlarged +
Stipule some measurement
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Summit arrangement or density
tight +
Summit character
width +
Synonyms
Coleogeton +
Taxon family
Potamogetonaceae +
Taxon name
Stuckenia filiformis subsp. filiformis +
Taxon parent
Stuckenia filiformis +
Taxon rank
subspecies +
Tepal quantity
4 +
Tuber presence
absent +
Turion presence
absent +
Vein quantity
1 (?) +  and 3 (?) +
Verticel atypical quantity
6 (9) +
Verticel quantity
2 (6) +
Volume
Volume 22 +
Whole organism architecture
caulescent +, not rhizomatous +  and rhizomatous +
Whole organism duration
annual +  and perennial +
Whole organism growth form
herb +
X chromosome quantity
13 +