Symphyotrichum jessicae

(Piper) G. L. Nesom

Phytologia 77: 283. 1995.

Common names: Jessica’s aster
EndemicConservation concern
Basionym: Aster jessicae Piper Erythea 6: 30. 1898
Treatment appears in FNA Volume 20. Treatment on page 536. Mentioned on page 472, 535, 537.

Perennials, 40–150 cm, colonial; long-rhizomatous. Stems 1–5+, ascending to erect, densely puberulent to lanate, especially distally. Leaves thickish, margins entire or shallowly crenate, apices acute to ± obtuse, faces densely lanate-puberulent; basal withering by flowering, petiolate, blades obovate to elliptic, 30–150 × 10–40 mm, bases cuneate to rounded, margins entire, ciliolate, apices acute, faces densely cinereous to lanate; proximalmost cauline sometimes withering by flowering, subpetiolate or sessile, blades obovate-lanceolate to elliptic, 50–100 × 10–25 (–35) mm, bases cuneate, clasping, ± auriculate, apices usually acute; distal sessile, blades 20–60 (–80) × 9–16 (–20) mm, bases rounded to auriculate. Heads in paniculiform, very leafy arrays, branches 4–10 (–20) cm. Peduncles densely lanate, bracts 1–8, elliptic, margins ciliolate, apices acute, puberulent. Involucres campanulate, 6–10 mm. Phyllaries in 4–6 series, oblanceolate (outer) to linear (inner), unequal, bases scarious (outer sometimes foliaceous), margins slightly scarious, entire, green zones obovate to elliptic, apices acute, faces densely lanate to cinereous. Ray-florets 18–40; corollas violet, laminae (8–) 12–20 × 1–2 (–2.5) mm. Disc-florets 35–80+; corollas yellow, 6–9 mm, lobes triangular, 0.4–1 mm. Cypselae brown, cylindric to obovoid, not compressed, 3.5–4.5 mm, 4–5-nerved, faces sparsely hairy; pappi tawny, (6–) 7–9 mm. 2n = 80.


Phenology: Flowering Aug–Sep.
Habitat: Dry grasslands, meadows, stream banks, openings in Ponderosa pine woodlands
Elevation: 500–1200 m

Discussion

Of conservation concern.

Symphyotrichum jessicae is known only from the Palouse and Clearwater river drainages of eastern Washington and adjacent northwestern Idaho.

Selected References

None.

Lower Taxa

None.

"thickish" is not a number.

... more about "Symphyotrichum jessicae"
not tailed +, rounded +  and obtuse +
sessile +, subpetiolate +  and petiolate +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
distinct +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
puberulent +  and ciliolate +
subequal +
scarious +
10mm +  and 25mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
leafy +  and paniculiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Piper) G. L. Nesom +
sessile +, subpetiolate +  and petiolate +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
rounded +  and auriculate +
scarious +
10mm;25mm +
Aster jessicae +
sessile +, subpetiolate +  and petiolate +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
acute;auriculate;cuneate;obovate-lanceolate;elliptic +
9mm;16mm +
rugulose +  and muricate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
barbellulate +  and barbellate +
sessile +  and petiolate +
Jessica’s aster +
not 2-lipped +  and actinomorphic +
yellow +  and violet +
at maturity , more or less ampliate , tubes usually shorter +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
strigillose +  and glabrous +
not compressed +, cylindric +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Idaho +  and Wash. +
500–1200 m +
cinereous;cinereous +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
hairy +, lanate +, ciliolate +  and lanate-puberulent +
acute;cuneate;rounded +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry grasslands, meadows, stream banks, openings in Ponderosa pine woodlands +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
12mm;20mm +
2 (?) +  and 5 (?) +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
triangular +
30mm;150mm +
acute +, cuneate +  and rounded +
10mm +  and 40mm +
2-carpellate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
25 +  and 40 +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Flowering Aug–Sep. +
oblanceolate +  and linear +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
Endemic +  and Conservation concern +
branched +  and simple +
ascending +  and erect +
1 +  and 5 +
appendaged +  and truncate +
papillate +  and smooth +
Aster sect. Heterastrum +  and Aster subg. Symphyotrichum +
Symphyotrichum jessicae +
Symphyotrichum sect. Occidentales +
species +
funnelform-campanulate +  and cylindric +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
40 cm400 mm <br />0.4 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, shrub +  and subshrub +
obovate +  and elliptic +