familyAsteraceae
tribeAsteraceae tribe Astereae
genusRayjacksonia
speciesRayjacksonia phyllocephala

Rayjacksonia phyllocephala

(de Candolle) R. L. Hartman & M. L. Lane

Amer. J. Bot. 83: 369. 1996.

Guy L. Nesom
Common names: Gulf Coast camphor-daisy
Illustrated
Basionym: Haplopappus phyllocephalus de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 347. 1836 (as Aplopappus)
Synonyms: Haplopappus phyllocephalus var. megacephalus (Nash) Waterfall Machaeranthera phyllocephala (Nash) Small Machaeranthera phyllocephala var. megacephala (Nash) Shinners Sideranthus megacephalus
Treatment appears in FNA Volume 20. Treatment on page 439. Mentioned on page 438.
Please click on the illustration for a higher resolution version.
Illustrator: Barbara Alongi

Copyright: Flora of North America Association

Annuals or perennials, 10–70 (–100) cm, herbaceous to suffrutescent. Leaf-blades oblong to oblanceolate, midcauline (2.5–) 4–13 mm wide. Heads essentially sessile, often surpassed by distal leaves that continue to very base of heads. Involucres (6–) 10–15 × 12–30 mm. Phyllaries in 3–4 series, loose, subequal, apices erect to spreading, 1.3–1.7 mm wide, herbaceous. Ray-florets 17–38; corollas 8.5–19 mm. Disc-florets: corolla-tubes longer than limbs. 2n = 12.


Phenology: Flowering (Jul–)Sep–Dec (sporadically Feb–Jun).
Habitat: Sandy sites, along waterways, canal banks, dunes, beaches, salt flats
Elevation: 0–10 m

Distribution

V20-1004-distribution-map.gif

Colo., Fla., La., Tex., Mexico (Tamaulipas)

Discussion

Selected References

Jackson, R. C. and C. T. Dimas. 1981. Experimental evidence for systematic placement of the Haplopappus phyllocephalus complex (Compositae). Syst. Bot. 6: 8–14.

Lower Taxa

None.
... more about "Rayjacksonia phyllocephala"
RDF feed
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
erect +  and spreading +
Apex size
subequal +
Apex texture
scarious +
Apex width
1.3mm +  and 1.7mm +
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
(de Candolle) R. L. Hartman & M. L. Lane +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Basionyms
Haplopappus phyllocephalus +
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
Gulf Coast camphor-daisy +
Corolla-tube length or size
longer +
Corolla architecture
not 2-lipped +  and actinomorphic +
Corolla coloration
yellow +
Corolla presence
absent +
Corolla some measurement
0.85 cm8.5 mm <br />0.0085 m <br /> (1.9 cm19 mm <br />0.019 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. +, Fla. +, La. +, Tex. +  and Mexico (Tamaulipas) +
Elevation
0–10 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
Sandy sites, along waterways, canal banks, dunes, beaches, salt flats +
Head architecture
sessile +
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
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Individual head architecture
each +  and sessile +
Inner series shape
thick-flattened +
Involucre atypical length
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Involucre length
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Involucre position relational
surrounding +
Involucre shape
hemispheric +
Involucre width
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Leaf-blade shape
oblong;oblanceolate +
Leaf architecture
sessile +  and subpetiolate +
Leaf arrangement
alternate +
Leaf position
cauline +
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 /> (1.3 cm13 mm <br />0.013 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 +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering (Jul–)Sep–Dec (sporadically Feb–Jun). +
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
subequal +
Phyllarie texture
Herbaceous (Chartaceous or scarious) +
Publication title
Amer. J. Bot. +
Publication year
1996 +
Ray-floret architecture
pistillate +
Ray-floret presence
absent +
Ray-floret quantity
17 (38) +
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
jackson1981a +
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 1004.xml +
Special status
Illustrated +
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 phyllocephalus var. megacephalus +, Machaeranthera phyllocephala +, Machaeranthera phyllocephala var. megacephala +  and Sideranthus megacephalus +
Taxon family
Asteraceae +
Taxon name
Rayjacksonia phyllocephala +
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 atypical some measurement
70 cm700 mm <br />0.7 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Whole-organism duration
perennial +  and annual +
Whole-organism growth form
herbaceous +  and suffrutescent +
Whole-organism some measurement
10 cm100 mm <br />0.1 m <br /> (70 cm700 mm <br />0.7 m <br />) +
Whole organism growth form
tree +, shrub +  and subshrub +
X chromosome quantity
6 +