familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Rudbeckiinae
genusRudbeckia
sectionRudbeckia sect. Macrocline
speciesRudbeckia occidentalis

Rudbeckia occidentalis

Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 355. 1840.

Lowell E. Urbatsch, Patricia B. Cox
Common names: Western coneflower
Endemic
Treatment appears in FNA Volume 21. Treatment on page 51. Mentioned on page 47.

Perennials, to 200 cm (rhizomatous, roots fibrous). Leaves: green, blades broadly ovate to lanceolate (rarely lobed), herbaceous, bases attenuate to cuneate or broadly rounded, ultimate margins entire or serrate, apices acute, faces sparsely to densely hairy (mostly adaxially), rarely glabrous; basal petiolate, 12–30 × 3–9 cm; cauline petiolate or sessile, 5–25 × 2–10 cm. Heads in ± corymbiform arrays. Phyllaries to 3 cm (margins mostly ciliate, hairy, especially abaxially). Receptacles ovoid to columnar; paleae (proximally light-brown, distally green, becoming maroon with age) 5–7 mm, apices acute to acuminate, abaxial tips densely hairy. Ray-florets 0. Discs 17–45 × 12–20 mm. Disc-florets 200–500+; corollas yellowish green proximally, blackish maroon distally, 4–6 mm; style-branches ca. 1.2 mm, apices acute to rounded. Cypselae 3.5–5 mm; pappi coroniform, to 1.2 mm. 2n = 36.


Phenology: Flowering summer–fall.
Habitat: Open meadows, streamsides, seeps
Elevation: 1000–2800 m

Distribution

V21-105-distribution-map.gif

Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Rudbeckia occidentalis is sometimes grown as an ornamental.

Selected References

None.

Lower Taxa

None.
... more about "Rudbeckia occidentalis"
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2n chromosome quantity
36 +
Abaxial tip pubescence
hairy +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
dark +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex pubescence
hairy +
Apex shape
acute;rounded +
Apex size
subequal +
Apex texture
scarious +
Apical appendage presence
absent +
Apical appendage shape
usually ovate +  and lanceolate +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
corymbiform +
Array development
indeterminate +  and determinate +
Author
Lowell E. Urbatsch +  and Patricia B. Cox +
Authority
Nuttall +
Band architecture
continuous +
Band quantity
1 +
Basal leaf architecture
petiolate +
Basal leaf length
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Basal leaf width
3 cm30 mm <br />0.03 m <br /> (9 cm90 mm <br />0.09 m <br />) +
Base shape
attenuate +  and cuneate or broadly rounded +
Blade architecture
compound +  and simple +
Blade growth form or texture
herbaceous +
Blade shape
broadly ovate;lanceolate +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Bractlet quantity
1;15 +
Branch-style distance
1.2 +
Branch arrangement or course or shape
linear +
Branch position
proximal +
Branch quantity
2/3;4/5 +
Branch some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle shape
Plumose (?) +
Calyculus presence
absent +
Calyculus quantity
Of 1 (15+ bractlets) +
Cauline blade architecture
sessile +  and petiolate +
Cauline leaf architecture
sessile +  and petiolate +
Cauline leaf length
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Cauline leaf width
2 cm20 mm <br />0.02 m <br /> (?) +  and 10 cm100 mm <br />0.1 m <br /> (?) +
Common name
Western coneflower +
Corolla architecture
tipped +
Corolla coloration
blackish maroon +  and yellowish green +
Corolla some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela atypical some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Cypsela growth form
dimorphic +
Cypsela pubescence
hairy +  and glabrous +
Cypsela shape
flattened +, fusiform-terete +  and obpyramidal +
Cypsela some measurement
3.5mm;5mm +
Disc-floret atypical quantity
300 (600) +
Disc-floret quantity
200 (500) +
Disc-floret reproduction
fertile +  and bisexual +
Disc atypical length
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Disc length
1.7 cm17 mm <br />0.017 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Disc width
12mm;20mm +
Distribution
Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
Elevation
1000–2800 m +
Embryo course
straight +
Face pubescence
glabrous +  and hairy +
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 arrangement
singly +
Habitat
Open meadows, streamsides, seeps +
Head architecture
discoid +  and radiate +
Head architecture or arrangement
radiate +
Head architecture or shape
discoid +
Head arrangement
in loose , corymbiform to paniculiform arrays +  and singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Individual head architecture
each +  and sessile +
Involucre diameter
0.1 cm1 mm <br />0.001 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Involucre position relational
surrounding +
Involucre shape
fusiform;turbinate or broadly campanulate +
Leaf architecture
sessile +  and petiolate +
Leaf arrangement
opposite +
Leaf coloration
green +
Leaf position
cauline +
Leaf pubescence
glaucous +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
Lobe quantity
5 (?) +
Lobe shape
deltate +  and lance-linear +
Margin architecture or pubescence or shape
ciliate +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and 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 +
Palea some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Pappus atypical quantity
2 (5) +
Pappus duration
persistent +
Pappus length or size
longer +
Pappus life cycle
falling +
Pappus presence
absent +
Pappus quantity
0 +  and 2 +
Pappus shape
coroniform +
Pappus some measurement
0 cm0 mm <br />0 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering summer–fall. +
Phyllary atypical quantity
5 (15) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary quantity
3 +  and 21 +
Phyllary size
unequal +
Phyllary some measurement
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Phyllary texture
Herbaceous (Chartaceous) +
Publication title
Trans. Amer. Philos. Soc., n. s. +
Publication year
1840 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
8 (13) +
Ray-floret presence
absent +
Ray-floret quantity
8 (15) +
Ray-floret reproduction
fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +  and smooth +
Receptacle shape
ovoid;columnar +
Reference
None +
Root texture
fibrous +
Scale atypical quantity
5 (10) +
Scale fusion
connate +  and distinct +
Scale quantity
2 +  and 6 +
Scale size
unequal +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
2 (3) +
Series quantity
2 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 105.xml +
Special status
Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +
Stem coloration
purplish +, bluish green +  and green +
Stem orientation
erect +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Style some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Synonyms
Rudbeckia subg. Macrocline +
Taxon family
Asteraceae +
Taxon name
Rudbeckia occidentalis +
Taxon parent
Rudbeckia sect. Macrocline +
Taxon rank
species +
Throat shape
cylindric +
Throat variability
equaling +
Tooth quantity
2 (8) +
Tube height or length or size
shorter +
Tube length or size
much longer +
Ultimate margin architecture or shape
serrate +  and entire +
Ultimate margin shape
crenate +
Volume
Volume 21 +
Whole-organism duration
perennial +
Whole-organism some measurement
0 cm0 mm <br />0 m <br /> (200 cm2,000 mm <br />2 m <br />) +
Whole organism atypical some measurement
80 cm800 mm <br />0.8 m <br /> (200 cm2,000 mm <br />2 m <br />) +
Whole organism growth form
shrub +  and subshrub +
Whole organism some measurement
10cm (80cm) +
X chromosome quantity
18 +