Rayjacksonia phyllocephala

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

Amer. J. Bot. 83: 369. 1996

Common names: Gulf Coast camphor-daisy
Synonyms: Haplopappus phyllocephalus var. megacephalus (Nash) Waterfall Machaeranthera phyllocephala (Nash) Small Machaeranthera phyllocephala var. megacephala (Nash) Shinners Sideranthus megacephalus unknown
Basionyms: Haplopappus phyllocephalus de Candolle
Treatment appears in FNA Volume 20. Treatment on page 439. Mentioned on page 438.
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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

No lower taxa listed.