Erigeron pumilus var. intermedius

Cronquist

Brittonia 6: 180. 1947.

Endemic
Synonyms: Erigeron pumilus subsp. intermedius Cronquist Erigeron pumilus var. gracilior Cronquist
Treatment appears in FNA Volume 20. Treatment on page 289.

36, inner of 12–16 (–20) bristles. 2n = 18, ray corollas usually pink, sometimes white. disc corollas: indurate portions relatively dull, glabrous or slightly puberulent. pappi: outer of coarse bristles or setiform scales.


Phenology: Flowering May–Aug.
Habitat: Moist or dry soil, meadows or sagebrush
Elevation: 1200–2300(–2800) m

Distribution

V20-602-distribution-map.gif

B.C., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Variety gracilior was described by A. Cronquist (1947) as “plants slender, the larger stems either not more than 1.5 mm thick near the base or bearing fewer than 5 heads.” Such plants occur mostly in the southern part of the variety’s range (mostly Idaho and Oregon, some in Washington); while the gracile tendency seems real, many arbitrary identifications must be made if two taxa are recognized.

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +, corymbiform +  and loose +
indeterminate +  and determinate +
Guy L. Nesom +
Cronquist +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
oblanceolate +  and narrowly oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
decurrent +
linear-lanceolate +
reduced +
rugulose +  and muricate +
not 2-lipped +  and actinomorphic +
bluish +, white +  and pink +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
subterete +, oblong +  and oblong-obovoid compressed +
fertile +  and bisexual +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
fertile +  and bisexual +
B.C. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
1200–2300(–2800) m +
strigose +, hispid +  and hispido-hirsute +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist or dry soil, meadows or sagebrush +
disciform +  and discoid +
in loose , corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
turbinate;hemispheric +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
erect;spreading +
deltate +
Not (?) +  and Scarious (?) +
2-carpellate +
Flowering May–Aug. +
3-nerved +  and 1-nerved +
hirsute +  and hispido-hirsute +
narrowly elliptic +  and linear-lanceolate +
puberulent +  and glabrous +
bearing subulate enations +, hairy +  and bristly +
setiform +
exalbuminous +
branched +  and simple +
prostrate +  and decumbent +
appendaged +  and truncate +
papillate +  and smooth +
Erigeron pumilus subsp. intermedius +  and Erigeron pumilus var. gracilior +
Erigeron pumilus var. intermedius +
Erigeron pumilus +
variety +
inflated +  and tubular +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
tree +, shrub +  and subshrub +