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2n chromosome quantity
40 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex relief
papillate +
Apex shape
truncate-penicillate +
Apex texture
scarious +
Apical appendage shape
usually ovate +  and lance-linear +
Appendage pubescence
hispidulous +
Appendage relief
papillate +
Array architecture
corymbiform +  and compound +
Array development
indeterminate +  and determinate +
Author
Theodore M. Barkley† +
Authority
Nuttall +
Band architecture
continuous +
Band quantity
1 +
Base shape
tapered +
Blade architecture
nerved +
Blade atypical width
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Blade length
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Blade shape
elliptic;oblanceolate +
Blade width
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Body architecture
winged;nerved;ribbed +
Bractlet presence
absent +
Bractlet quantity
2;4 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and smooth +
Bristle coloration
white +  and stramineous +
Bristle pappus duration
persistent +
Bristle quantity
30;80 +
Calyculus presence
absent +
Calyculus quantity
Of 1 (15+ bractlets) +
Corolla architecture
not 2-lipped +
Corolla coloration
purplish +, reddish +, white +, ochroleucous +, yellow +  and white rarely reddish +
Corolla lamina some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela pubescence
glabrous +
Cypsela shape
angled +, 5-ribbed +, prismatic +  and cylindric +
Disc-floret atypical quantity
5 (13) +
Disc-floret quantity
13 (80) +
Disc-floret reproduction
fertile +  and bisexual +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distribution
B.C. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
Elevation
(0–)200–2500 m +
Embryo course
straight +
Face pubescence
hairy +  and glabrous +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
1;5 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Habitat
Marshes, swampy places, standing water, alkaline sites +
Head architecture
discoid +  and radiate +
Head arrangement
singly +
Head atypical quantity
40 (80) +
Head development
indeterminate +
Head quantity
20;40 +
Head reproduction
heterogamous +  and homogamous +
Herbage pubescence
glabrous +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Individual head architecture
each +  and sessile +
Involucre diameter
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Involucre position relational
surrounding +
Involucre shape
turbinate;campanulate +
Leaf architecture
petiolate +
Leaf arrangement
alternate +
Leaf position
cauline +  and basal +
Leaf size
reduced +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe orientation
erect;recurved +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Margin architecture or shape
dentate to pinnatifid +  and entire +
Margin shape
entire +  and denticulate +
Margin texture
scarious +
Number of lower taxa
0 +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Pappus duration
persistent +
Pappus life cycle
falling +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering spring–early summer. +
Phyllarie atypical quantity
34 (?) +
Phyllarie duration
persistent +
Phyllarie fusion
distinct +
Phyllarie growth form or texture
herbaceous +
Phyllarie life cycle
falling +
Phyllarie orientation
erect +
Phyllarie quantity
13 (More or less) +
Phyllarie shape
mostly oblong +  and lanceolate or linear +
Phyllarie size
subequal +
Phyllarie some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Phyllarie texture
Herbaceous (Chartaceous) +
Phyllarie variability
equal +
Publication title
Trans. Amer. Philos. Soc., n. s. +
Publication year
1841 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
0 (?) +
Ray-floret presence
absent +
Ray-floret quantity
5 (?) +
Ray-floret reproduction
fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
foveolate +
Receptacle shape
flat;convex +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
2 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20 1236.xml +
Special status
Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture or arrangement
lax +
Stem arrangement or growth form
clustered +
Stem orientation
erect +
Stem quantity
2 +  and 4 +
Style-branch architecture
appendaged +  and truncate +
Style-branch structure in adjective form
stigmatic +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Senecio hydrophilus var. pacificus +
Taxon family
Asteraceae +
Taxon name
Senecio hydrophilus +
Taxon parent
Senecio +
Taxon rank
species +
Throat shape
campanulate +
Throat variability
equaling +
Tip coloration
black +
Tube height or length or size
shorter +
Ultimate margin shape
denticulate +  and serrate or toothed +
Volume
Volume 20 +
Whole-organism atypical some measurement
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
Whole-organism duration
perennial +
Whole-organism some measurement
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Whole organism atypical some measurement
100 cm1,000 mm <br />1 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
Whole organism growth form
shrub +  and subshrub +
Whole organism some measurement
5cm (100cm) +
X chromosome quantity
10 +