familyAsteraceae
tribeAsteraceae tribe Astereae
genusRayjacksonia
speciesRayjacksonia annua

Rayjacksonia annua

(Rydberg) R. L. Hartman & M. A. Lane

Amer. J. Bot. 83: 368. 1996.

Guy L. Nesom
Common names: Viscid camphor-daisy
Endemic
Basionym: Sideranthus annuus Rydberg Bull. Torrey Bot. Club 31: 653. 1905
Synonyms: Haplopappus annuus (Rydberg) Cory Machaeranthera annua (Rydberg) Shinners
Treatment appears in FNA Volume 20. Treatment on page 438.

Annuals, 20–100 cm, herbaceous or suffrutescent. Leaf-blades oblanceolate to oblong or oblong-lanceolate, midcauline (1–) 4–15 (–25) mm wide. Heads on short, sometimes bracteate peduncles, not surpassed by distal leaves. Involucres (4.5–) 6–9 × 9–15 (–20) mm. Phyllaries in 3–4 series, loose, strongly unequal, apices broadly spreading to squarrose, ca. 0.9–1 mm wide, herbaceous. Ray-florets (13–) 20–36; corollas 6–11 (–14) mm. Disc-florets: corolla-tubes ± equaling limbs. 2n = 12.


Phenology: Flowering (Jul–)Aug–Oct.
Habitat: Sand or sandy loam, prairies, stream sides and bottoms, alkaline flats, salt marsh edges, roadsides
Elevation: 1000–1700 m

Distribution

V20-1003-distribution-map.gif

Colo., Kans., Nebr., N.Mex., Okla., Tex., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
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2n chromosome quantity
12 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Apex fusion
distinct +
Apex growth form or texture
herbaceous +
Apex orientation
broadly spreading +  and squarrose +
Apex size
subequal +
Apex texture
scarious +
Apex width
0.9mm +  and 1mm +
Apical appendage quantity
0 +
Apical appendage shape
usually triangular +  and linear +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
subcorymbo-cymiform +  and paniculiform +
Array development
indeterminate +  and determinate +
Author
Guy L. Nesom +
Authority
(Rydberg) R. L. Hartman & M. A. Lane +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Basionyms
Sideranthus annuus +
Blade architecture
1-nerved +
Blade shape
linear;oblanceolate +
Body architecture or pubescence or relief
smooth +
Body architecture or shape
ribbed +
Body relief
rugulose +  and muricate +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellate +
Bristle coloration
brownish +
Bristle pappus duration
persistent +
Bristle quantity
30;40 +
Bristle shape
Attenuate (?) +
Bristle size
unequal +
Calyculus presence
absent +
Common name
Viscid camphor-daisy +
Corolla architecture
not 2-lipped +  and actinomorphic +
Corolla atypical some measurement
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Corolla coloration
yellow +
Corolla presence
absent +
Corolla some measurement
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +, 2-ribbed +  and 5-ribbed +
Cypsela growth form
dimorphic +
Cypsela shape
compressed +, less columnar +  and prismatic +
Disc-floret quantity
25 (130) +
Disc-floret reproduction
fertile +  and bisexual +
Disc architecture or shape
5-9-ribbed +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Disc shape
compressed;broadly ellipsoid;clavate +
Distribution
Colo. +, Kans. +, Nebr. +, N.Mex. +, Okla. +, Tex. +  and Wyo. +
Elevation
1000–1700 m +
Embryo course
straight +
Face pubescence
strigoso-sericeous +, glandular +  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
Sand or sandy loam, prairies, stream sides and bottoms, alkaline flats, salt marsh edges, roadsides +
Head architecture or arrangement
radiate +
Head arrangement
singly +
Head development
indeterminate +
Head reproduction
heterogamous +  and homogamous +
Herbage architecture
taprooted +  and sessile +
Herbage pubescence
stipitate-glandular +  and glabrous +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Individual head architecture
each +  and sessile +
Inner series shape
thick-flattened +
Involucre atypical length
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Involucre atypical width
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Involucre length
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric +
Involucre width
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Leaf-blade shape
oblanceolate;oblong or oblong-lanceolate +
Leaf architecture
sessile +  and subpetiolate +
Leaf arrangement
alternate +
Leaf position
cauline +
Limb variability
equaling +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe orientation
erect +
Lobe quantity
5 (?) +
Lobe shape
triangular +
Margin architecture or shape
entire +  and serrate +
Margin texture
scarious +
Midcauline width
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Number of lower taxa
0 +
Outer series shape
terete +
Outer series width
thinner +
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 +
Peduncle architecture
bracteate +
Peduncle height or length or size
short +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering (Jul–)Aug–Oct. +
Phyllarie architecture or fragility
loose +
Phyllarie duration
persistent +
Phyllarie fixation or orientation
appressed +
Phyllarie fusion
distinct +
Phyllarie life cycle
falling +
Phyllarie quantity
20 (40) +
Phyllarie size
unequal +
Phyllarie texture
Herbaceous (Chartaceous or scarious) +
Publication title
Amer. J. Bot. +
Publication year
1996 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
13 (20) +
Ray-floret presence
absent +
Ray-floret quantity
20 (36) +
Ray-floret reproduction
fertile +
Ray architecture or shape
0-4-ribbed +
Ray shape
3-angled;broadly ellipsoid;obovoid +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +
Receptacle shape
convex +
Reference
None +
Root texture
fibrous +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
3;4 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V20 1003.xml +
Special status
Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +
Stem orientation
erect +  and decumbent-ascending +
Style-branch appendage shape
deltate +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
glabrous +
Style quantity
1 +
Style relief
papillate +  and smooth +
Synonyms
Haplopappus annuus +  and Machaeranthera annua +
Taxon family
Asteraceae +
Taxon name
Rayjacksonia annua +
Taxon parent
Rayjacksonia +
Taxon rank
species +
Throat size
ampliate +
Tip architecture
1-nerved +
Tip orientation
spreading +  and reflexed +
Tip shape
linear +  and lanceolate or ovatelanceolate +
Tip size
subequal +
Tip texture
white-indurate +
Tip variability
equal +
Tube height or length or size
shorter +
Volume
Volume 20 +
Whole-organism duration
annual +
Whole-organism growth form
suffrutescent +  and herbaceous +
Whole-organism some measurement
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Whole organism growth form
tree +, shrub +  and subshrub +
X chromosome quantity
6 +