familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Ambrosiinae
genusOxytenia
speciesOxytenia acerosa

Oxytenia acerosa

Nuttall

Proc. Acad. Nat. Sci. Philadelphia 4: 20. 1848.

John L. Strother
IllustratedEndemic
Synonyms: Euphrosyne acerosa (Nuttall) Panero Iva acerosa (Nuttall) R. C. Jackson
Treatment appears in FNA Volume 21. Treatment on page 29.
Please click on the illustration for a higher resolution version.
Illustrator: Linda Ann Vorobik

Copyright: Flora of North America Association

Leaves: petioles 0–20+ mm; blades or lobes mostly 20–150 × 1–1.5 (–3) mm. Peduncles 1–3+ mm. Involucres 2–3+ mm. Phyllaries: outer 5–7 ± herbaceous, sericeous to strigillose, inner scarious to membranous, usually villous. Functionally staminate florets: corollas 2.5–3 mm. Paleae 1.8–2+ mm. Cypselae 1.5–2.5 mm. 2n = 36.


Phenology: Flowering Jun–Sep.
Habitat: Wet or seasonally wet, alkaline soils
Elevation: 100–2200 m

Distribution

V21-52-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Utah.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Oxytenia acerosa"
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2n chromosome quantity
36 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
pale +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
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
paniculiform +
Array development
indeterminate +  and determinate +
Author
John L. Strother +
Authority
Nuttall +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Blade architecture
compound +  and simple +
Blade atypical width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Blade length
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Blade shape
lobed +
Blade width
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Bractlet quantity
1;15 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle shape
Plumose (?) +
Calyculus presence
absent +
Calyculus quantity
Of 1 (15+ bractlets) +
Corolla architecture
zygomorphic +
Corolla coloration
whitish +
Corolla presence
absent +
Corolla shape
tubular +  and more or less filiform +
Corolla some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or pubescence or relief
smooth +
Cypsela architecture or shape
beaked +
Cypsela growth form
dimorphic +
Cypsela pubescence
villous +
Cypsela relief
scabrellous +  and tuberculate +
Cypsela shape
3-4-angled +, obcompressed +  and obovoid +
Cypsela some measurement
1.5mm;2.5mm +
Disc floret architecture
staminate +
Disc floret quantity
5 (60) +
Disc floret reproduction
fertile +  and bisexual +
Distal blade shape
linear;filiform +
Distribution
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +  and Utah. +
Elevation
100–2200 m +
Embryo course
straight +
Face pubescence
glabrous +, glabrate +, usually sericeous +  and strigillose +
Filament fusion
distinct +
Floret architecture
staminate +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
10;25 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Glomerule arrangement
singly +
Habitat
Wet or seasonally wet, alkaline soils +
Head architecture or arrangement
radiate +
Head architecture or shape
disciform +
Head arrangement
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Linda Ann Vorobik +
Individual head architecture
each +  and sessile +
Inner phyllary pubescence
villous +
Inner phyllary texture
scarious +  and membranous +
Involucre diameter
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric +
Involucre some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Lamina prominence
conspicuous +
Leaf architecture
sessile +  and petiolate +
Leaf arrangement
alternate +
Leaf position
cauline +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
Lobe atypical width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Lobe length
20mm (150mm) +
Lobe orientation
erect +
Lobe quantity
5 (?) +
Lobe shape
deltate +
Lobe width
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and entire +
Number of lower taxa
0 +
Outer phyllary growth form or texture
herbaceous +
Outer phyllary pubescence
sericeous +  and strigillose +
Outer phyllary quantity
5 +  and 7 +
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 pubescence
villous +
Palea shape
spatulate;cuneiform +
Palea some measurement
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Palea texture
membranous +
Pappus duration
persistent +
Pappus life cycle
falling +
Pappus presence
absent +
Peduncle some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
1 (10) +
Petal fusion
connate +
Petiole some measurement
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Phenology
Flowering Jun–Sep. +
Phyllary atypical quantity
3 (5) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary quantity
10 +  and 15 +
Phyllary shape
Lanceovate (Linear) +
Phyllary size
unequal +  and subequal +
Phyllary texture
Herbaceous (Chartaceous) +
Publication title
Proc. Acad. Nat. Sci. Philadelphia +
Publication year
1848 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
5 (8) +
Ray-floret presence
absent +
Ray-floret quantity
5 (?) +
Ray-floret reproduction
fertile +
Receptacle architecture
paleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle shape
convex +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
8 (12) +
Series quantity
2;3 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 52.xml +
Special status
Illustrated +  and Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +
Stem orientation
erect +
Stigmatic papilla presence
absent +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Synonyms
Euphrosyne acerosa +  and Iva acerosa +
Taxon family
Asteraceae +
Taxon name
Oxytenia acerosa +
Taxon parent
Oxytenia +
Taxon rank
species +
Throat shape
campanulate +  and cylindric +
Tube length or size
longer +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism duration
perennial +, biennial +  and annual +
Whole organism atypical some measurement
150 cm1,500 mm <br />1.5 m <br /> (400 cm4,000 mm <br />4 m <br />) +
Whole organism growth form
shrub +  and subshrub +
Whole organism some measurement
50cm (200cm) +
X chromosome quantity
18 +