Eurybia eryngiifolia

(Torrey & A. Gray) G. L. Nesom

Phytologia 77: 259. 1995.

Common names: Thistleleaf aster
Endemic
Basionym: Aster eryngiifolius Torrey & A. Gray Fl. N. Amer. 2: 502. 1843
Synonyms: Heleastrum chapmanii (Torrey & A. Gray) Greene Prionopsis chapmanii Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 381. Mentioned on page 366, 380.

Plants 30–70 cm; in scattered individuals or small clumps, eglandular; rhizomes short, stout, or strong, woody caudices (roots fleshy). Stems 1–3+, erect, coarse, villous. Leaves strongly basal and cauline, coriaceous, margins indurate, entire to remotely spinose-serrate, remotely and obscurely scabridulous, spines indurate-margined or wholly indurate, finely parallel-veined with evident midnerves, apices acute, revolute, indurate, abaxial faces glabrous; basal and proximal cauline persistent (bases ± marcescent when leaves deciduous), petioles scarcely distinct, blades linear (grasslike), 70–350 × 3–8 mm, adaxial faces glabrous; cauline sessile, blades linear to lance-linear, 15–130 × 1.5–7 mm, progressively reduced and more spinose distally, adaxial faces progressively more villous distally. Heads 1–11+, borne singly or in racemiform arrays, branches ascending to erect, stiff. Peduncles ± densely villous, sometimes sparsely stipitate-glandular distally; bracts 0–7, appressed, lanceolate, bases ± indurate, margins spinose, adaxial faces villous. Involucres campanulo-hemispheric, 9–12 mm, slightly shorter than pappi. Phyllaries 70–140 in 4–5 series, greenish, densely thick-nerved, lanceolate to linear (innermost), unequal, coriaceous, bases indurate and rounded (outer), margins entire, indurate or ± scarious, erose (inner), sometimes sparsely villoso-ciliate, ± densely stipitate-glandular, apices squarrose, green and often purplish-tinged, foliaceous, long-acuminate, adaxial faces villosulous, rarely also sparsely stipitate-glandular. Ray-florets 25–60; corollas white or pinkish, coiling, 10–20 × 1–2.1 mm. Disc-florets 115–260; corollas yellow, 5.5–7 mm, slightly ampliate, tubes shorter than tubular throats, lobes 0.75–1 mm, erect, lanceolate. Cypselae straw-colored, ellipsoid to obovoid, 2–3.5 mm, ribs 11–13 prominent, glabrous; pappi of (ca. 35) orangish tan (coarse, sometimes clavellate) bristles 7.8–8.2 mm, slightly longer than disc corollas.


Phenology: Flowering late spring–midsummer.
Habitat: Low pine flatwoods, pine savannas, bogs, often on wet sand, on southern coastal plains
Elevation: 0–100 m

Discussion

Eurybia eryngiifolia is known from the Florida panhandle and adjacent areas of southern Georgia and Alabama. The species is of conservation concern in Alabama.

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.

... more about "Eurybia eryngiifolia"
stipitate-glandular +, villosulous +, villous +  and glabrous +
not tailed +, rounded +  and obtuse +
green and often purplish-tinged +
distinct +
subequal +
indurate +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Luc Brouillet +
(Torrey & A. Gray) G. L. Nesom +
rounded +
indurate +
Aster eryngiifolius +
compound +  and simple +
linear +  and lance-linear +
1.5 cm15 mm <br />0.015 m <br /> (13 cm130 mm <br />0.13 m <br />) +
oblong;spatulate oblanceolate or lanceolate +
reduced +
1.5mm;7mm +
rugulose +  and muricate +
lanceolate +
ascending;erect +
barbellulate +  and barbellate +
orangish tan +
0.78 cm7.8 mm <br />0.0078 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
Thistleleaf aster +
not 2-lipped +  and actinomorphic +
yellow +, pinkish +  and white +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ampliate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
7-12(-18)-nerved +
beaked +, 2-ribbed +  and 5-ribbed +
straw-colored +
ellipsoid +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Fla. +  and Ga. +
0–100 m +
glabrous or +  and sparsely densely strigillose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Low pine flatwoods, pine savannas, bogs, often on wet sand, on southern coastal plains +
in racemiform arrays +  and singly +
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 />) +
campanulo-hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
coriaceous +
lanceolate +
entire +, spinose +  and remotely spinose-serrate +
stipitate-glandular +
scabridulous +
2-carpellate +
barbellulate +  and barbellate +
pinkish +, yellowish +, tan +, tawny +  and cinnamon +
persistent +
unequal +
stipitate-glandular +  and villous +
Flowering late spring–midsummer. +
lanceolate +  and linear +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
strong +  and stout +
prominent +
11 +  and 13 +
exalbuminous +
parallel-veined +  and indurate-margined +
eglandular +, branched +  and simple +
1 +  and 3 +
appendaged +  and truncate +
papillate +  and smooth +
Heleastrum chapmanii +  and Prionopsis chapmanii +
Eurybia eryngiifolia +
species +
ampliate +
cauline +  and proximal +
10 cm100 mm <br />0.1 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +