Rayjacksonia phyllocephala

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

Amer. J. Bot. 83: 369. 1996

Common names: Gulf Coast camphor-daisy
Basionyms: 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.
Annuals or perennials, 10–70(–100) cm, herbaceous to suffrutescent. Leaf blades oblong to oblanceolate, mid-cauline (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



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


Lower Taxa


AuthorGuy L. Nesom +
Authority(de Candolle) R. L. Hartman & M. L. Lane +
BasionymsHaplopappus phyllocephalus +
Common nameGulf Coast camphor-daisy +
DistributionColo. +, Fla. +, La. +, Tex. + and Mexico (Tamaulipas). +
Elevation0–10 m +
HabitatSandy sites, along waterways, canal banks, dunes, beaches, salt flats +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorBarbara Alongi +
PhenologyFlowering (Jul–)Sep–Dec (sporadically Feb–Jun). +
Publication titleAmer. J. Bot. +
Publication year1996 +
Referencejackson1981a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V19-20-21/V20 1004.xml +
SynonymsHaplopappus phyllocephalus var. megacephalus +, Machaeranthera phyllocephala +, Machaeranthera phyllocephala var. megacephala + and Sideranthus megacephalus +
Taxon familyAsteraceae +
Taxon nameRayjacksonia phyllocephala +
Taxon parentRayjacksonia +
Taxon rankspecies +
VolumeVolume 20 +