Helianthus debilis subsp. tardiflorus

Heiser

Madroño 13: 154, figs. 5, 6. 1956.

Endemic
Synonyms: Helianthus debilis var. tardiflorus (Heiser) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 151. Mentioned on page 150.

Stems erect, glabrous or sparsely hispid. Leaf blades 5–9(–10) cm, margins usually deeply, irregularly serrate, abaxial faces densely gland-dotted. Peduncles 10–25 cm. Ray laminae 14–16(–20) mm. Discs 14–15 mm diam. 2n = 34.


Phenology: Flowering spring–fall.
Habitat: Sandy beaches
Elevation: 0–30+ m

Discussion

Selected References

None.

Lower Taxa

None.