Heterotheca oregona var. rudis

(Greene) Semple

Brittonia 39: 382. 1987.

Endemic
Basionym: Chrysopsis rudis Greene Man. Bot. San Francisco, 174. 1894
Synonyms: Chrysopsis oregona var. rudis (Greene) Jepson
Treatment appears in FNA Volume 20. Treatment on page 237. Mentioned on page 236.

Stems usually openly branched distally, moderately hispid, sparsely to moderately coarsely stipitate-glandular. Leaves green, mid cauline averaging 30.3 × 9.1 mm (18.6–72 × 3.2–30 mm), faces moderately to densely short-hispid (more than 5 hairs/mm²), sparsely to moderately, coarsely stipitate-glandular. Outer phyllaries lanceolate. 2n = 18.


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

Discussion

Variety rudis ranges from extreme southern Oregon to east of Monterey in the coastal mountains of northern California, eastward into the southern Cascades and the northern Central Valley of California. It occasionally occurs with var. oregona but generally in habitats somewhat seasonally drier than those usual for the typical variety.

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 +
(Greene) Semple +
decurrent +
Chrysopsis rudis +
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. +  and Oreg. +
0–500 m +
30.3 cm303 mm <br />0.303 m <br /> (?) +
strigose +, glabrate +  and densely hairy and/or stipitate-glandular +
9.1 cm91 mm <br />0.091 m <br /> (?) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sand and gravel deposits along rivers and 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 />) +
stipitate-glandular +  and short-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 +
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 +
appendaged +  and truncate +
papillate +  and smooth +
Chrysopsis oregona var. rudis +
Heterotheca oregona var. rudis +
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 +