Heterotheca oregona var. oregona

Endemic
Treatment appears in FNA Volume 20. Treatment on page 236. Mentioned on page 237.

Stems openly branched distally, sparsely to moderately hispid, moderately to densely, finely stipitate-glandular. Leaves green, mid cauline averaging 32.8 × 8.8 mm (15–58 × 3.4–14.8 mm), faces glabrate to sparsely hispid (fewer than 5 hairs/mm²), sparsely to moderately stipitate-glandular. Outer phyllaries lanceolate. 2n = 18.


Phenology: Flowering Jul–Oct.
Habitat: Sand and gravel deposits, stream margins, in oak and conifer woods
Elevation: 0–500 m

Discussion

Variety oregona ranges from the Olympic Peninsula in Washington southward through the Cascades and the Coastal ranges to San Luis Obispo County, California.

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

stipitate-glandular +  and hispid +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John C. Semple +
(Nuttall) Shinners +
decurrent +
Ammodia oregona +
compound +  and simple +
rugulose +  and muricate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
linear +  and narrowly lanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ampliate +
0.85 cm8.5 mm <br />0.0085 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
compressed +  and obconic +
0.035 cm0.35 mm <br />3.5e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
fertile +  and bisexual +
Calif. +, Oreg. +  and Wash. +
0–500 m +
32.8 cm328 mm <br />0.328 m <br /> (?) +
strigose +, glabrate +  and densely hairy and/or stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sand and gravel deposits, stream margins, in oak and conifer woods +
paniculiform +
in corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
tan;rusty brown +
attenuate +  and clavate +
turbino-cylindric +
0.75 cm7.5 mm <br />0.0075 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
cauline +, proximal +  and basal +
erect;spreading +
short-pilose +
lanceolate +, triangular +  and deltate +
serrate +  and entire +
stipitate-glandular +  and strigose +
1.2 cm12 mm <br />0.012 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
glabrate +  and sparsely hispid +
2-carpellate +
in 3 +  and 4 series +
stipitate-glandular +  and hispid +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Jul–Oct. +
lanceolate +  and linear-lanceolate +
ovate-oblanceolate +
Field & Lab. +
bearing subulate enations +, hairy +  and bristly +
subulate;convex +
5 +  and 10 +
3 +  and 40 +
linear +  and linear-lanceolate or triangular +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
exalbuminous +
ascending +  and erect +
stipitate-glandular +  and hispid +
appendaged +  and truncate +
papillate +  and smooth +
Chrysopsis oregona +
Heterotheca oregona var. oregona +
Heterotheca oregona +
variety +
short-pilose +
60 cm600 mm <br />0.6 m <br /> (200 cm2,000 mm <br />2 m <br />) +
15 cm150 mm <br />0.15 m <br /> (105 cm1,050 mm <br />1.05 m <br />) +
tree +, shrub +  and subshrub +