Symphyotrichum patens var. patentissimum

(Lindley ex de Candolle) G. L. Nesom

Phytologia 77: 288. 1995.

Endemic
Basionym: Aster patentissimus Lindley ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 232. 1836
Synonyms: Aster arnottii Nees ex Torrey & A. Gray Aster continuus Small Aster patens var. patentissimus (Lindley ex de Candolle) Torrey & A. Gray Aster subsessilis E. S. Burgess Virgulus patens var. patentissimus (Lindley ex de Candolle) Reveal & Keener
Treatment appears in FNA Volume 20. Treatment on page 489.

Plants robust. Involucres turbinate, 8–12 mm. Phyllaries in 5–7 series, appressed, obtuse, densely strigillose to canescent, eglandular or sparsely glandular; mid 1.2–1.7 mm wide. 2n = 20.


Phenology: Flowering late Aug–early Nov.
Habitat: Dry oak-hickory woodlands
Elevation: 0–1000+ m

Distribution

V20-1097-distribution-map.gif

Ark., Ill., Kans., Ky., La., Miss., Mo., Okla., Tex.

Discussion

Variety patentissimum is found mostly west of the Mississippi River, in the Interior Uplands of the eastern United States. It is similar to the typical variety except for the involucre, which is usually 8–12 mm with more phyllaries in more series. Intermediates occur with var. patens.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

not tailed +, rounded +  and obtuse +
purplish red +
distinct +
appressed +  and squarrose +
acuminate;obtuse;acute +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Lindley ex de Candolle) G. L. Nesom +
linear-oblanceolate;obovate;oblanceolate +
cordate-clasping to auriculate-amplexicaul +
cuneate +
indurate +
Aster patentissimus +
3-nerved +, subpetiolate +  and sessile +
7 cm70 mm <br />0.07 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
ovate;spatulate;usually ovate;lanceolate +
reduced +
0.4 cm4 mm <br />0.004 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
rugulose +  and muricate +
appressed +  and spreading +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
white turning purple +, cream +, yellow +, light lavender-violet +  and mauve rarely white +
at maturity , more or less ampliate , tubes usually shorter +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
brown +, purple +  and dull +
not compressed +, obovoid +  and oblong-obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ark. +, Ill. +, Kans. +, Ky. +, La. +, Miss. +, Mo. +, Okla. +  and Tex. +
0–1000+ m +
strigillose +, sericeous +, stipitate-glandular +, cinereo-puberulent +, hairy +  and scabroso-hirsute +
rugulose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry oak-hickory 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 />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 m <br />) +
10mm;18mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
triangular +
entire +  and more or less serrulate +
distally scabroso-ciliolate +  and ciliolate +
entire +, crenate +  and serrate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
2-carpellate +
rose-tinged +  and tawny +
persistent +
25 +  and 40 +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
scabroso-hirsute +  and cinereo-puberulent +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering late Aug–early Nov. +
glandular +  and eglandular +
densely strigillose +  and canescent +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
branched +  and simple +
ascending +  and erect +
scabroso-hirsute +  and cinereo-puberulent or villous +
1 +  and 5 +
appendaged +  and truncate +
papillate +  and smooth +
Aster arnottii +, Aster continuus +, Aster patens var. patentissimus +, Aster subsessilis +  and Virgulus patens var. patentissimus +
Symphyotrichum patens var. patentissimum +
Symphyotrichum patens +
variety +
ampliate +
with cormoid caudices +  and rhizomatous +
100 cm1,000 mm <br />1 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
stipitate-glandular +
10 cm100 mm <br />0.1 m <br /> (100 cm1,000 mm <br />1 m <br />) +
diamond--shaped +