Helianthus petiolaris subsp. fallax

Heiser

Rhodora 60: 279, fig. 3. 1958.

Endemic
Treatment appears in FNA Volume 21. Treatment on page 153. Mentioned on page 152.

Stems usually ± hispid, rarely ± hirsute to glabrate. Leaves: abaxial faces sparsely, if at all, glanddotted. Peduncles usually with leafy bracts subtending heads. Phyllaries 2–3.5 mm wide. Disc corollas: throats gradually narrowed distal to slight, not densely hairy basal bulges. 2n = 34.


Phenology: Flowering summer–fall.
Habitat: Dry, open areas
Elevation: 1200–2500 m

Discussion

Selected References

None.

Lower Taxa

None.
rarely sparsely hirsute +  and glabrate +
not tailed +, rounded +  and obtuse +
reddish +  and purplish +
pale +  and dark +
connate +  and distinct +
short-attenuate +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Edward E. Schilling +
Heiser +
truncate +  and cuneate +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lanceolate;deltate-ovate or ovate +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
reddish +  and yellow +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
compressed +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, Nev. +  and Utah. +
1200–2500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, open areas +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
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 /> (2.4 cm24 mm <br />0.024 m <br />) +
hemispheric +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
sessile +  and petiolate +
yellow;reddish +
triangular +
serrate +  and entire +
bearded +  and ciliate +
2-carpellate +
3-toothed +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
persistent +
0 +  and 2 +
coroniform +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering summer–fall. +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
14 +  and 25 +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
aristate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
exalbuminous +
procumbent +  and decumbent +
less hirsute +  and glabrate +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Lagasceinae +
Helianthus petiolaris subsp. fallax +
Helianthus petiolaris +
subspecies +
narrowed +
toothed +  and entire +
300 cm3,000 mm <br />3 m <br /> (500 cm5,000 mm <br />5 m <br />) +
40 cm400 mm <br />0.4 m <br /> (200 cm2,000 mm <br />2 m <br />) +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
shrub +  and subshrub +