Rayjacksonia phyllocephala

Illustrator: Barbara Alongi

Copyright: Flora of North America Association

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

• Generated Map
• Legacy Map

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.