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2n chromosome quantity
36 +
Abaxial side quantity
3 (5) +
Abaxial surface pubescence
puberulent +  and villous +
Androecium position
epigynous +
Anther coloration
cream +
Anther fixation
versatile +
Anther length
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Anther orientation
erect +
Anther position
episepalous +
Anther size
subequal +  and longer +
Anther width
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Apex shape
acute +
Apical notch some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Author
Peter C. Hoch +
Authority
Rafinesque +
Base architecture
bulbous +
Base life cycle
anthesis +
Base shape
cuneate +
Berry architecture or shape
nutlike +
Berry dehiscence
indehiscent +  and loculicidal +
Blade length
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Blade margin shape
toothed +  and entire +
Blade shape
oblong-lanceolate +  and sublinear +
Blade width
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Bract size
reduced +
Bracteole presence
absent +
Bud length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Bud orientation
recurved +  and erect +
Bud width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Bulblet growth form
cespitose +
Capsule architecture
sessile +  and pedicellate +
Capsule architecture or dehiscence
splitting +
Capsule architecture or shape
short-beaked +
Capsule course
curved +  and straight +
Capsule dehiscence
dehiscent +
Capsule shape
narrowly subcylindric +  and narrowly clavate +
Capsule some measurement
3.5 cm35 mm <br />0.035 m <br /> (6.8 cm68 mm <br />0.068 m <br />) +
Carpel quantity
Many (?) +
Cel reproduction
vegetative +
Central column architecture
sessile +  and pedicellate +
Central column condition
intact +
Central column dehiscence
disintegrating +
Central column duration
persistent +
Chalazal collar some measurement
0.1 +
Coma coloration
dingy white +
Coma duration
persistent +
Coma presence
absent +
Coma some measurement
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Common name
Downy willowherb +  and épilobe dressé +
Distribution
N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Conn. +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Vt. +, Va. +  and Wis. +
Elevation
0–600 m. +
Embryo-sac coating
oily +
Embryo-sac course
straight +
Embryo-sac presence
absent +
Embryo coating
oily +
Embryo course
straight +
Embryo presence
absent +
Endosperm coating
oily +
Endosperm course
straight +
Endosperm presence
absent +
Filament architecture
dithecal +
Filament fixation
basifixed +  and versatile +
Filament fusion
distinct +
Floral-tube architecture
not bulbous +
Floral-tube duration
deciduous +
Floral-tube length
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Floral-tube presence
absent +
Floral-tube quantity
, +
Floral-tube width
1mm +  and 2mm +
Flower architecture
actinomorphic +
Flower architecture or arrangement or growth form
solitary +
Flower life cycle
flowering +
Flower orientation
erect +
Flower part duration
deciduous +
Flower part life cycle
anthesis +
Flower reproduction
bisexual +
Fruit architecture
sessile +  and pedicellate +
Fruit architecture or dehiscence
splitting +
Fruit course
curved +  and straight +
Fruit dehiscence
dehiscent +
Fruit shape
4-angled +, terete +, narrowly cylindrical +  and fusiform or rarely narrowly ellipsoidal +
Fruit size
slender +
Habitat
Sphagnum and peat bogs, marshes, seeps, damp pastures. +
Hair orientation
spreading +
Herb architecture
caulescent +
Herb duration
perennial +  and annual +
Herb growth form
suffrutescent +
Inflorescence architecture
not +  and branched +
Inflorescence architecture or function or pubescence
glandular +
Inflorescence arrangement
mixed +
Inflorescence position
axillary +
Inflorescence position or structure subtype
terminal +
Inflorescence pubescence
puberulent +  and villous +
Leaf architecture
subsessile +
Leaf architecture or arrangement
fasciculate +
Leaf arrangement
alternate +  and opposite +
Leaf duration
deciduous +
Leaf position
proximal +
Line presence
absent +
Line prominence
raised +
Line pubescence
hairy +
Line shape
decurrent +
Lobe quantity
Many (?) +
Locule quantity
1 +
Margin quantity
3 (6) +
Margin shape
denticulate +  and entire +
Nectary presence
absent +
Nectary prominence
raised +
Number of lower taxa
0 +
Ovary architecture or function or pubescence
glandular +
Ovary architecture or structure in adjective form
4-locular +
Ovary arrangement
mixed +
Ovary position
inferior +
Ovary pubescence
puberulent +  and villous +
Ovary some measurement
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Ovule architecture
bitegmic +
Ovule arrangement or growth form
clustered +
Ovule orientation
anatropous +
Ovule quantity
numerous +  and 1 +
Papilla architecture
multicellular +
Pedicel some measurement
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Perianth position
epigynous +
Petal architecture or shape
emarginate +
Petal arrangement
imbricate +
Petal arrangement or shape
convolute +
Petal coloration
light +  and dark-pink +
Petal length
4mm +  and 6mm +
Petal presence
absent +
Petal quantity
4 +
Petal shape
obcordate +
Petal width
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Phenology
Flowering Jul–Sep. +
Pollen-grain dehiscence or orientation
longitudinal +
Pollen fixation
basifixed +
Polyad arrangement
singly +
Publication title
Précis Découv. Somiol. +
Publication year
1814 +
Raceme orientation
erect +
Raphide quantity
abundant +
Reference
None +
Rim shape
inflated +
Ring prominence
raised +
Rosette position
basal +  and cauline +
Row quantity
1 +
Secretion condition
wet +
Secretion condition or texture
dry +
Secretion relief
papillate +
Secretion shape
clavate +  and globose +
Seed length
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Seed quantity
many +
Seed relief
sculptured +  and smooth +
Seed shape
narrowly fusiform +  and narrowly obovoid +
Seed width
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Sepal arrangement or dehiscence
valvate +
Sepal coloration
lanceolate +, , +, flushed with red or flushed with cream +  and green +
Sepal duration
deciduous +
Sepal length
? (?) +
Sepal orientation
spreading +
Sepal quantity
4 +
Sepal width
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Septum architecture
parenchymatous +
Septum arrangement
parietal +, axile +  and placentation +
Septum presence
absent +
Septum width
thin +
Series length or size
longer +
Series quantity
2 +
Series size
unequal +
Series variability
equal +
Set length or size
longer +
Set quantity
2 +
Set variability
equal +
Shrub architecture
unarmed +
Shrub growth form
not clonal +
Shrub habitat
aquatic +, amphibious +  and terrestrial +
Slit dehiscence or orientation
longitudinal +
Species position
proximal +
Spike architecture
leafy +
Stamen arrangement
singly +
Stamen filament coloration
pink +
Stamen filament some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Stamen quantity
8 +
Stamen size or quantity
2 times as many as sepals +
Stem architecture
branched +  and simple +
Stem architecture or function or pubescence
glandular +
Stem arrangement
mixed +
Stem arrangement or growth form
clustered +
Stem growth form or orientation
prostrate +  and decumbent +
Stem orientation
erect +
Stem pubescence
glabrous +, villous +, glandular-puberulent +  and strigillose +
Stem relief
exfoliating +
Stem shape
terete +
Stem some measurement
15 cm150 mm <br />0.15 m <br /> (95 cm950 mm <br />0.95 m <br />) +
Stem texture
not woody +
Stigma architecture or shape
entire +
Stigma length
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Stigma quantity
1 +
Stigma shape
clavate +
Stigma structure in adjective form
commissural +
Stigma width
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Stipule architecture
subsessile +  and petiolate +
Stipule duration
caducous +
Stipule position
intrapetiolar +
Stipule presence
absent +
Stipule size
small +
Stolon architecture
leaved +
Stolon location
epigeous +
Stolon shape
threadlike +
Style coloration
cream +
Style orientation
erect +
Style quantity
1 +
Style some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Subshrub architecture
unarmed +
Subshrub growth form
not clonal +
Subshrub habitat
aquatic +, amphibious +  and terrestrial +
Surface architecture or function or pubescence
glandular +
Surface arrangement
mixed +
Surface condition or texture
dry +
Surface position
low +
Surface pubescence
puberulent +  and villous +
Surface quantity
19 (18) +
Surface relief
papillose +
Surface shape
ridged +
Surface size
constricted +
Synonyms
Epilobium strictum +
Taxon family
Onagraceae +
Taxon name
Epilobium densum +
Taxon parent
Epilobium sect. Epilobium +
Taxon rank
species +
Tetrad arrangement
singly +
Tetrad dehiscence
3(-5)-aperturate +
Tooth prominence
inconspicuous +
Tooth shape or vernation
revolute +
Turion architecture or arrangement
compact +
Turion arrangement
decussate +
Turion length
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Turion texture
fleshy +
Turion width
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Vein prominence
apparent +
Viscin thread dehiscence or orientation
longitudinal +
Viscin thread fusion
united +
Volume
Volume 10 +
Whole organism growth form
suffrutescent +