Helenium elegans var. amphibolum

(A. Gray) Bierner

Sida 5: 47. 1972.

Basionym: Helenium amphibolum A. Gray Proc. Amer. Acad. Arts 9: 202. 1874
Treatment appears in FNA Volume 21. Treatment on page 433.

Plants 25–70 cm. Leaves: proximal blades usually irregularly toothed or lobed; mid and distal leaves usually entire. Heads 20–50. Peduncles 3–14 cm. Involucres 7–11 × 8–12(–13) mm. Ray florets 13–17; corollas 6.3–15(–19) × 2.2–5.5(–8.7) mm. Disc florets 250–500(–700+). Cypselae 0.7–1 mm; pappi 0.1–0.3(–0.4) mm. 2n = 26.


Phenology: Flowering (Feb–)Mar–Jun(–Sep).
Habitat: Calcareous soils, ditches, washes, along streams
Elevation: 300–1900 m

Distribution

V21-1085-distribution-map.gif

Tex., Mexico (Coahuila, Nuevo León, San Luis Potosí, Tamaulipas).

Discussion

Selected References

None.

Lower Taxa

None.
Mark W. Bierner +
(A. Gray) Bierner +
Helenium amphibolum +
Tex. +, Mexico (Coahuila +, Nuevo León +, San Luis Potosí +  and Tamaulipas). +
300–1900 m +
Calcareous soils, ditches, washes, along streams +
Flowering (Feb–)Mar–Jun(–Sep). +
Compositae +
Helenium elegans var. amphibolum +
Helenium elegans +
variety +