Difference between revisions of "Eurybia ×herveyi"
Phytologia 77: 262. 1995.
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|common_names=Hervey’s aster | |common_names=Hervey’s aster | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Aster herveyi | |name=Aster herveyi | ||
|authority=A. Gray | |authority=A. Gray | ||
| + | |rank=species | ||
| + | |publication_title=Manual ed. | ||
| + | |publication_place=5, 229. 1867 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Eurybia ×herveyi | name=Eurybia ×herveyi | ||
| − | |||
|authority=(A. Gray) G. L. Nesom | |authority=(A. Gray) G. L. Nesom | ||
|rank=species | |rank=species | ||
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|publication year=1995 | |publication year=1995 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_862.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Eurybia | |genus=Eurybia | ||
Latest revision as of 20:06, 5 November 2020
Plants 25–70+ cm; in clones and clumps (with sterile rosettes), stipitate-glandular distally; rhizomes branched, herbaceous becoming woody. Stems 1–3+, erect, straight, proximally glabrous, distally sometimes sparsely strigose, stipitate-glandular. Leaves basal and cauline, firm, margins slightly revolute, crenate-serrate, scabrous, apices acuminate and mucronate, abaxial faces usually glabrescent to ± scabrous, sometimes ± sparsely strigose, gland-dotted or stipitate-glandular, adaxial sparsely puberulent, stipitate-glandular (increasingly so distally); basal withering by flowering, long-petiolate, petioles slightly winged, bases dilated and sheathing, sparsely ciliate, ± glandular, blades ovate to elliptic-ovate, 70–120 × 40–65 mm, bases rounded to sometimes slightly oblique; proximal cauline long-petiolate, petioles shorter and gradually more broadly winged distally, blades ovate to elliptic-ovate, 55–100 × 24–65 mm, gradually reduced distally; distal winged-petiolate to subpetiolate or sessile, blades ovate or elliptic to lanceolate or oblanceolate, 10–64 × 3–18 mm, gradually reduced distally, bases ± clasping, margins becoming entire (arrays). Heads (3–)8–19+ in open, corymbiform arrays. Peduncles firm, straight, 0.4–3.5 cm, sparsely strigose, densely stipitate-glandular; bracts 0–3, oblong-lanceolate, 3–5 mm, acute, densely stipitate-glandular. Involucres campanulate, (6–)7–11 mm, shorter than pappi. Phyllaries (18–)25–40 in (4–)5–6 series, appressed, lanceolate (outer) or lance-ovate to oblong or linear-oblong (inner; innermost longer than 7 mm), strongly unequal, bases indurate, rounded adaxially, dark-green zones obovate to lanceolate (inner), ca. 1/3 distal portion, margins hyaline or often purplish (inner), scarious, erose, ± ciliate, apices (at least some) reflexed, ± squarrose, or twisted, rounded to obtuse (outer) or acute (inner), abaxial faces stipitate-glandular. Ray florets 10–11; corollas ± purple, 13.1–13.5 × 1.6–2 mm. Disc florets 25–40; corollas cream or light yellow, becoming pinkish, 7.6–8.5 mm, slightly ampliate, tubes longer than narrowly funnelform-campanulate throats, lobes erect, lanceolate-acuminate, 0.9–1.4 mm. Cypselae dark reddish brown, cylindro-fusiform, compressed, ca. 3 mm (sterile or undeveloped), ribs [not seen], faces strigillose; pappi of tawny, (sometimes apically ± clavate) bristles 7.6–8+ mm, equaling disc corollas. 2n = 72.
Phenology: Flowering fall.
Habitat: Open woods, clearings, often sandy or acidic substrates
Elevation: 0–100 m
Distribution
Conn., Mass., N.J., N.Y., R.I.
Discussion
Eurybia ×herveyi is the F1 hybrid between E. macrophylla and E. spectabilis. L. J. Uttal (1962) proved its origin with artificial crosses, and pointed out that the two parents co-occur in some populations where their ranges overlap.
Selected References
None.