Isocoma acradenia var. acradenia

Common names: Pale-leaf goldenweed
Treatment appears in FNA Volume 20. Treatment on page 441. Mentioned on page 440, 445.

Leaf-blades 20–30 mm, margins usually entire, proximal rarely toothed or lobed (in Arizona). Involucres 5–7 mm. Phyllary apices usually rounded, not spinulose, sometimes with weakly developed aristae. Florets 18–24.2n = 24.


Phenology: Flowering (Jun–)Sep–Nov.
Habitat: Salt shrub, often with Larrea
Elevation: 600–1100 m

Distribution

V20-1007-distribution-map.gif

Ariz., Calif., Nev., Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
(Greene) Greene +
decurrent +
Bigelowia acradenia +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblanceolate +  and narrowly obovate +
linear;oblanceolate or obovate +
rugulose +  and muricate +
Pale-leaf goldenweed +
not 2-lipped +  and actinomorphic +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
subterete +, terete +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +  and Mexico (Sonora) +
600–1100 m +
gland-dotted;gland-dotted +
sericeous +, tomentose +, glabrous +, villous +  and hispidulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Salt shrub, often with Larrea +
indeterminate +
heterogamous +  and homogamous +
stipitate-glandular +, hispidulous +  and glabrous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
obconic;turbinate or campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
deltate +
lobed +, toothed +  and entire +
2-carpellate +
persistent +
Flowering (Jun–)Sep–Nov. +
oblong +  and elliptic-lanceolate +
lobed +  and toothed +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Illustrated +
eglandular +  and few-branched +
resinous +
gland-dotted +
stipitate-glandular +, tomentose +, villous +, hispidulous +  and glabrous +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus acradenius +
Isocoma acradenia var. acradenia +
Isocoma acradenia +
variety +
goblet--shaped +
ampliate +
dark orange-resinous +
120 cm1,200 mm <br />1.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
20 cm200 mm <br />0.2 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
120 cm1,200 mm <br />1.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +