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.
hairy +, tomentulose +  and villous-tomentose +
not tailed +, rounded +  and obtuse +
dark-brown +  and black +
pale +  and dark +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Edward E. Schilling +
(A. Gray) Heiser +
cuneate +
Helianthus parishii +
light +  and dark green +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
lanceolate +
0.8cm;4cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Parish’s or Los Angeles sunflower +
reddish +  and yellow +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
compressed +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
10–500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Marshes +
in more or less corymbiform , paniculiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
hemispheric +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
sessile +  and petiolate +
triangular +
serrate +  and entire +
2-carpellate +
3-toothed +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
persistent +
0 +  and 2 +
coroniform +
1 cm10 mm <br />0.01 m <br /> (18 cm180 mm <br />0.18 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering late summer–fall. +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
30 +  and 38 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Contr. Dudley Herb. +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
lanceolate +  and aristate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
Endemic +  and Conservation concern +
procumbent +  and decumbent +
Scabrous (?) +, Hirsute (?) +, Hispid (?) +  and Glabrous (?) +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Lagasceinae +
Helianthus nuttallii subsp. parishii +
Helianthus nuttallii +
subspecies +
campanulate +
toothed +  and entire +
300 cm3,000 mm <br />3 m <br /> (500 cm5,000 mm <br />5 m <br />) +
100 cm1,000 mm <br />1 m <br /> (400 cm4,000 mm <br />4 m <br />) +