Eurybia jonesiae

(Lamboy) G. L. Nesom

Phytologia 77: 260. 1995.

Common names: Jones’s aster
Endemic
Basionym: Aster jonesiae Lamboy Syst. Bot. 13: 192, figs. 4, 5a. 1988
Treatment appears in FNA Volume 20. Treatment on page 373. Mentioned on page 366.

Plants 20–110 cm, eglandular; rhizomes thick, caudices short, stout. Stems 1, erect, simple, straight to slightly flexuous, glabrous or sparsely villosulous proximally, increasingly villosulous distally. Leaves basal and cauline, margins serrate, scabrous, apices usually acute, sometimes acuminate, mucronate, faces scabrous, abaxial sparsely villous to strigose with hirsute veins, adaxial strigose; basal and proximal long-petiolate (to 120 mm), petioles not winged (or rarely so), hirsute and ciliate, blades widely ovate to ovate or lanceolate, 80–190 × 50–110 mm, bases usually cordate, subcordate, or rounded, sometimes cuneate; cauline short-petiolate (to 50 mm) to subpetiolate or sessile (arrays), petioles gradually winged distally, blades ovate to lanceovate, 20–60 × 8–30 mm, reduced distally, bases rounded to cuneate. Heads 4–80 in flat-topped, corymbiform arrays. Peduncles 0.4–1.6 cm, villous; bracts single or a second midway. Involucres cylindro-campanulate, 10–13 mm, equaling or longer than pappi. Phyllaries 36–50 in 4–5 series, ovate, elliptic, or lanceolate to linear (outer 3 × 1.5 mm, inner 13 × 0.7 mm), strongly unequal, bases indurate, green zones ± lanceolate to linear along midnerves (inner), 1/4–3/4 width, subapical (rarely outer foliaceous), margins hyaline, erose, ciliate, apices squarrose, acute to long-acuminate (inner hyaline), abaxial faces ± villosulous, adaxial glabrous. Ray-florets 7–15; corollas whitish to cream-colored, becoming purple, 15–20 × 1–2 mm. Disc-florets 20–25; corollas yellow, slightly ampliate, 6.5–8.5 mm, tubes longer than funnelform throats, lobes ± reflexed, lanceolate, 1–1.2 mm. Cypselae brown, fusiform, ± compressed, 3–4 mm, ribs 7–9, tan, prominent, crowded, faces strigillose; pappi of cinnamon (sometimes ± clavate) bristles, ± equaling disc corollas. 2n = 54.


Phenology: Flowering late summer–fall.
Habitat: Rich woods, moist ravines, rocky ridges, wooded slopes near streams, Piedmont in oak-hickory-pine forest region
Elevation: 100–400 m

Discussion

A number of specimens from Alabama and Georgia identified as Aster commixtus are this species (see also W. F. Lamboy 1988).

Selected References

None.

Lower Taxa

None.

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... more about "Eurybia jonesiae"
villosulous +, sparsely villous +  and strigose +
glabrous +  and strigose +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
flat-topped +
Luc Brouillet +
(Lamboy) G. L. Nesom +
rounded +  and cuneate +
indurate +
Aster jonesiae +
compound +  and simple +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
ovate;lanceovate +
reduced +
8mm;30mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Jones’s aster +
not 2-lipped +  and actinomorphic +
yellow +, whitish +  and cream-colored +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ampliate +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
7-12(-18)-nerved +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +  and fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +  and Ga. +
100–400 m +
strigillose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rich woods, moist ravines, rocky ridges, wooded slopes near streams, Piedmont in oak-hickory-pine forest region +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1.4 cm14 mm <br />0.014 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
cylindro-campanulate +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
lanceolate +
1/4 +  and 3/4 +
2-carpellate +
barbellulate +  and barbellate +
pinkish +, yellowish +, tan +, tawny +  and cinnamon +
persistent +
unequal +
0.4 cm4 mm <br />0.004 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
winged +  and not winged +
Flowering late summer–fall. +
lanceolate +  and linear +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
prominent +
7 +  and 9 +
exalbuminous +
straight +  and slightly flexuous +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Eurybia jonesiae +
species +
ampliate +
10 cm100 mm <br />0.1 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
subapical +
less lanceolate +  and linear +