Heterotheca camporum var. camporum

Treatment appears in FNA Volume 20. Treatment on page 255. Mentioned on page 256.

Plants 35–70 cm. Distal stems and peduncles eglandular or sparsely to moderately stipitate-glandular. Distal leaf faces moderately hispido-strigose, usually eglandular, rarely sparsely stipitate-glandular. 2n = 36.


Phenology: Flowering Jul–Oct(–Dec).
Habitat: Prairies, sandy plains, limestone bluffs, ledges and glades, sandy banks, slopes of sandhills, dry rocky or sandy barrens, railroad rights-of-way, sandy disturbed areas, and in open oak woods of the central oak-hickory vegetation zone
Elevation: 100–300 m

Discussion

Variety camporum grows on bluffs along the Mississippi River, sandy areas near rivers, and roadsides in eastern Missouri, northern Arkansas, Illinois, and western Indiana. It may be similar in stature and general appearance to Heterotheca villosa var. minor and var. villosa, whose ranges just reach the northwestern limit of distribution of var. camporum in northern Illinois. Possibly it was introduced in Nebraska in the late 1800s but did not survive. Sparse serration of the mid cauline leaf margins distinguishes var. camporum from varieties of H. villosa.

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.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
corymbiform +, open +  and congested +
indeterminate +  and determinate +
John C. Semple +
(Greene) Shinners +
cuneate +
Chrysopsis camporum +
compound +  and simple +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
38 cm380 mm <br />0.38 m <br /> (73 cm730 mm <br />0.73 m <br />) +
ovate;obovate;oblanceolate;oblanceolate +
reduced +
6mm;15mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
rhizomatous +  and taprooted +
not 2-lipped +  and actinomorphic +
ampliate +
0.5 cm5 mm <br />0.005 m <br /> (0.66 cm6.6 mm <br />0.0066 m <br />) +
obconic +  and compressed +
fertile +  and bisexual +
stipitate-glandular +
stipitate-glandular +
Ark. +, Ill. +, Ind. +  and Mo. +
100–300 m +
strigose +, stipitate-glandular +, moderately strigose +  and sparsely moderately stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Prairies, sandy plains, limestone bluffs, ledges and glades, sandy banks, slopes of sandhills, dry rocky or sandy barrens, railroad rights-of-way, sandy disturbed areas, and in open oak woods of the central oak-hickory vegetation zone +
paniculiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
tan;rusty brown +
attenuate +  and clavate +
0.9 cm9 mm <br />0.009 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
cylindric;campanulo-hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2.15 cm21.5 mm <br />0.0215 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
10.5mm;17mm +
sessile +  and petiolate +
stipitate-glandular +  and hispido-strigose +
cauline +  and basal +
erect;spreading +
glabrate +  and glabrous +
lanceolate +, triangular +  and deltate +
fimbriate-ciliate +  and strigoso-ciliate +
stipitate-glandular +  and strigose +
2-carpellate +
in 3 +  and 4 series +
stipitate-glandular +  and short-hispido-strigose +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering Jul–Oct(–Dec). +
lanceolate +  and linear-lanceolate +
ovate-oblanceolate +
stipitate-glandular +  and hairy +
linear-lanceolate +
subpetiolate +  and sessile +
Field & Lab. +
bearing subulate enations +, hairy +  and bristly +
subulate;convex +
7 +  and 10 +
3 +  and 40 +
linear +  and linear-lanceolate or triangular +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
ascending +  and erect +
1 +  and 30 +
appendaged +  and truncate +
papillate +  and smooth +
Chrysopsis villosa var. camporum +  and Heterotheca villosa var. camporum +
Heterotheca camporum var. camporum +
Heterotheca camporum +
variety +
110 cm1,100 mm <br />1.1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
35 cm350 mm <br />0.35 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +