Helianthus nuttallii subsp. parishii

(A. Gray) Heiser

Contr. Dudley Herb. 4: 316. 1955.

Common names: Parish’s or Los Angeles sunflower
EndemicConservation concern
Basionym: Helianthus parishii A. Gray Proc. Amer. Acad. Arts 19: 7. 1883
Treatment appears in FNA Volume 21. Treatment on page 167. Mentioned on page 166.

Plants usually 200–400 cm. Leaves mostly alternate; blades lanceolate, apices acute to acuminate, abaxial faces tomentulose to villous-tomentose. Phyllaries: abaxial faces densely hairy (longer hairs 1+ mm).


Phenology: Flowering late summer–fall.
Habitat: Marshes
Elevation: 10–500 m

Discussion

Of conservation concern.

The wetland habitat for subsp. parishii has nearly disappeared through draining of marshes and channelization of watercourses. The subspecies was thought to be extinct until, relatively recently, claims have been made that a population of it has been found.

Selected References

None.

Lower Taxa

None.
Edward E. Schilling +
(A. Gray) Heiser +
Helianthus parishii +
Parish’s or Los Angeles sunflower +
10–500 m +
Marshes +
Flowering late summer–fall. +
Contr. Dudley Herb. +
Endemic +  and Conservation concern +
Undefined (tribe Undefined) subtribe Lagasceinae +
Helianthus nuttallii subsp. parishii +
Helianthus nuttallii +
subspecies +