Difference between revisions of "Rayjacksonia phyllocephala"
Amer. J. Bot. 83: 369. 1996.
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
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|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Rayjacksonia | |genus=Rayjacksonia | ||
Latest revision as of 19:58, 5 November 2020
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
Distribution
Colo., Fla., La., Tex., Mexico (Tamaulipas).
Discussion
Selected References
Lower Taxa
None.