familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Ambrosiinae
genusChorisiva
speciesChorisiva nevadensis

Chorisiva nevadensis

(M. E. Jones) Rydberg in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 33: 9. 1922.

John L. Strother
IllustratedEndemic
Basionym: Iva nevadensis M. E. Jones Amer. Naturalist 17: 973. 1883
Synonyms: Euphrosyne nevadensis (M. E. Jones) Panero
Treatment appears in FNA Volume 21. Treatment on page 32.
Please click on the illustration for a higher resolution version.
Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

Leaves: petioles 2–20 mm; blades 5–20 × 5–15 mm overall, lobes 1–1.5 mm wide. Peduncles 0.5–5+ mm. Involucres 2–5+ mm high. Phyllaries: outer 3 ± scabrellous, inner scarious to membranous. Paleae 1.5–2 mm. Pistillate florets: corollas 0.5–1+ mm, ± strigillose. Functionally staminate florets: corollas 1.5–2 mm. Cypselae 1.5–2 mm.


Phenology: Flowering May–Oct.
Habitat: Sandy or gravelly flats, washes, usually alkaline soils
Elevation: 1000–2200 m

Distribution

V21-58-distribution-map.gif

Calif., Nev.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Chorisiva nevadensis"
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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
spiciform +, racemiform +, paniculiform +, glomerate +  and corymbiform +
Array development
indeterminate +  and determinate +
Author
John L. Strother +
Authority
(M. E. Jones) Rydberg in N. L. Britton et al. +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Basionyms
Iva nevadensis +
Blade architecture
compound +  and simple +
Blade length
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Blade shape
lobed;deltate;lanceolate +
Blade width
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 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
yellowish +
Corolla pubescence
strigillose +
Corolla shape
tubular +
Corolla some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or pubescence or relief
smooth +
Cypsela architecture or shape
beaked +
Cypsela growth form
dimorphic +
Cypsela pubescence
glabrous +
Cypsela relief
corky-tuberculate +  and smooth +
Cypsela shape
obcompressed +  and obovoid +
Cypsela some measurement
1.5mm;2mm +
Disc floret architecture
staminate +
Disc floret quantity
5 (60) +
Disc floret reproduction
fertile +  and bisexual +
Distribution
Calif. +  and Nev. +
Elevation
1000–2200 m +
Embryo course
straight +
Face pubescence
glabrous +, stipitate-glandular +  and hairy +
Face relief
scabrellous +
Filament fusion
distinct +
Floret architecture
staminate +  and pistillate +
Floret atypical quantity
3;5 +
Floret position
proximal +
Floret quantity
5;10 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Glomerule arrangement
singly +
Habitat
Sandy or gravelly flats, washes, usually alkaline soils +
Head architecture or arrangement
radiate +
Head architecture or shape
discoid +
Head arrangement
singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Individual head architecture
each +  and sessile +
Inner phyllary pubescence
glabrous +
Inner phyllary texture
scarious +  and membranous +
Involucre diameter
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Involucre height
2mm +  and 5mm +
Involucre position relational
surrounding +
Involucre shape
less turbinate;campanulate +
Lamina prominence
conspicuous +
Leaf architecture
petiolate +
Leaf arrangement
alternate +
Leaf position
cauline +
Line quantity
2 +
Lobe atypical quantity
3 (5) +
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 quantity
3 +
Outer phyllary relief
scabrellous +
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 shape
linear;setiform +
Palea some measurement
0.15 cm1.5 mm <br />0.0015 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
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
1 (10) +
Petal fusion
connate +
Petiole some measurement
0.2 cm2 mm <br />0.002 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Phenology
Flowering May–Oct. +
Phyllary atypical quantity
3 (5) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary life cycle
falling +
Phyllary quantity
3 +  and 8 +
Phyllary shape
Lanceovate (Linear) +
Phyllary size
unequal +  and subequal +
Phyllary texture
Herbaceous (Chartaceous) +
Publication title
in N. L. Britton et al., N. Amer. Fl. +
Publication year
1922 +
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
1;2 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 58.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 nevadensis +
Taxon family
Asteraceae +
Taxon name
Chorisiva nevadensis +
Taxon parent
Chorisiva +
Taxon rank
species +
Throat shape
campanulate +  and cylindric +
Tip pubescence
ciliate +  and strigillose +
Tip shape
dilated +
Tube length or size
longer +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism atypical some measurement
25 cm250 mm <br />0.25 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Whole-organism duration
annual +
Whole-organism some measurement
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
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
3cm (150cm) +