familyAsteraceae
tribeAsteraceae tribe Gnaphalieae
genusGnaphalium
speciesGnaphalium palustre

Gnaphalium palustre

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 403. 1841.

Guy L. Nesom
Common names: Western marsh cudweed
Synonyms: Filaginella palustris (Nuttall) Holub Gnaphalium palustre var. nanum Jepson Gnaphalium heteroides
Treatment appears in FNA Volume 19. Treatment on page 429. Mentioned on page 444.

Annuals, (1–) 3–15 (–30) cm; taprooted or fibrous-rooted. Stems commonly with decumbent branches produced from bases, densely or loosely and persistently woolly-tomentose. Leaf-blades spatulate to oblanceolate-oblong, 1–3.5 cm × 3–8 (–10) mm. Bracts subtending heads oblanceolate to obovate, 4–12 × 1.5–4 mm, shorter than or surpassing glomerules. Heads in capitate glomerules (at stem tips and in distalmost axils). Involucres 2.5–4 mm. Phyllaries brownish, bases woolly, the inner narrowly oblong with white (opaque), blunt apices. 2n = 14.


Phenology: Flowering May–Oct.
Habitat: Arroyos, sandy streambeds, pond edges, potholes, other moist, open sites
Elevation: 100–2900 m

Distribution

V19-708-distribution-map.gif

Alta., B.C., Sask., Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Utah, Wash., Wyo., Mexico

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Gnaphalium palustre"
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2n chromosome quantity
14 +
Anther base shape
tailed +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex coloration
white +
Apex shape
blunt +
Apex texture
scarious +
Apical appendage shape
mostly ovate +  and lanceovate or linear +
Appendage pubescence
hirsute +
Appendage quantity
0 +
Appendage relief
papillate +
Array architecture
racemiform +, paniculiform +  and corymbiform +
Array development
indeterminate +  and determinate +
Author
Guy L. Nesom +
Authority
Nuttall +
Band architecture
continuous +
Band quantity
1 +
Base pubescence
woolly +
Base shape
cuneate +
Blade architecture
compound +  and simple +
Blade margin architecture or shape
entire +
Blade margin shape
denticulate +
Blade shape
oblanceolate;spatulate or linear +
Body architecture or shape
5-ribbed +, 3-ribbed +  and 2-ribbed +
Body relief
muriculate +, papillate +  and smooth +
Bract height or length or size
shorter +
Bract length
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Bract shape
oblanceolate +  and obovate +
Bract width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Branch arrangement or course or shape
linear +
Branch growth form or orientation
decumbent +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellate +
Bristle fusion
distinct +
Bristle quantity
8;12 +
Bristle shape
Plumose (?) +
Calyculus presence
absent +
Common name
Western marsh cudweed +
Corolla architecture
actinomorphic +
Corolla coloration
whitish +  and purplish +
Cypsela architecture
monomorphic +
Cypsela shape
oblong +
Disc floret architecture
staminate +
Disc floret reproduction
bisexual +
Distribution
Alta. +, B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Oreg. +, S.Dak. +, Utah +, Wash. +, Wyo. +  and Mexico +
Elevation
100–2900 m +
Embryo course
straight +
Face coloration
gray;concolor +
Face pubescence
glabrous +  and tomentose +
Face relief
papillate +
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 +
Glomerule architecture
spiciform +
Glomerule architecture or shape
capitate +
Glomerule position relational
surpassing +
Habitat
Arroyos, sandy streambeds, pond edges, potholes, other moist, open sites +
Head architecture or shape
disciform +
Head arrangement
singly +  and aggregated +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Individual head architecture
each +  and sessile +
Inner floret quantity
4 (7) +
Inner phyllary shape
Oblong (?) +
Involucre position relational
surrounding +
Involucre shape
campanulate +
Involucre some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Leaf-blade atypical width
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Leaf-blade length
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Leaf-blade shape
spatulate;oblanceolate-oblong +
Leaf-blade width
3mm;8mm +
Leaf architecture
sessile +
Leaf arrangement
alternate +
Leaf position
cauline +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe quantity
5 (?) +
Lobe shape
rarely lanceovate +  and lanceolate +
Margin architecture or shape
entire +
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 quantity
40 (80) +
Petal fusion
connate +
Phenology
Flowering May–Oct. +
Phyllary atypical quantity
12 (30) +
Phyllary coloration
Brownish (?) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary presence
absent +
Phyllary pubescence or texture
chartaceous +
Phyllary size
unequal +
Phyllary texture
Medially herbaceous (Membranous or scarious) +
Phyllary variability
equal +
Publication title
Trans. Amer. Philos. Soc., n. s. +
Publication year
1841 +
Ray-floret presence
absent +
Receptacle architecture
epaleate +
Receptacle architecture or pubescence or relief
smooth +
Receptacle prominence or shape
flat +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle shape
conic;more or less columnar +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
5 (15) +
Series quantity
1;3;5 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V19 708.xml +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem orientation
erect +
Stem pubescence
woolly-tomentose +
Stem quantity
1 +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Filaginella palustris +, Gnaphalium palustre var. nanum +  and Gnaphalium heteroides +
Taxon family
Asteraceae +
Taxon name
Gnaphalium palustre +
Taxon parent
Gnaphalium +
Taxon rank
species +
Volume
Volume 19 +
Whole-organism architecture
fibrous-rooted +  and taprooted +
Whole-organism atypical some measurement
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Whole-organism duration
annual +
Whole-organism some measurement
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Whole organism growth form
shrub +  and subshrub +
X chromosome quantity
7 +