Symphyotrichum firmum

(Nees) G. L. Nesom

Phytologia 77: 282. 1995.

Common names: Glossy-leaved aster
Endemic
Basionym: Aster firmus Nees Syn. Aster. Herb., 25. 1818
Synonyms: Aster lucidulus (A. Gray) Wiegand Aster puniceus var. firmus (Nees) Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 526. Mentioned on page 469, 476, 501, 522, 525.

Perennials, 40–250 cm, colonial; long-rhizomatous. Stems 1, erect (straight, ± thin, 2–8 mm diam at base, ± ribbed, red above each node), glabrous or glabrate (very sparsely hispidulous) proximally to ± hispidulous distally. Leaves (crowded, light green, shiny) firm, margins crenulate-serrate or entire, revolute, apices acute to acuminate, mucronate, abaxial faces glabrous or midveins sometimes with hairs apically, adaxial glabrous; basal withering by flowering, subpetiolate (petioles dilated, winged, sheathing), blades spatulate to oblanceolate, 30–100+ × 3–20+ mm, bases attenuate to cuneate, margins remotely crenate-serrate to subentire, apices acute to rounded; proximal cauline withering by flowering, sessile or subpetiolate (petioles widely winged, clasping), blades oblanceolate, 50–150 × 20–30 mm, greatly reduced distally, bases auriculate, clasping, apices acute to acuminate; distal sessile, blades lanceolate to lance-elliptic to oblanceolate, 40–70 × 10–25 mm, little reduced distally, bases auriculate, clasping, margins entire, apices acute to acuminate. Heads in densely paniculiform arrays, branches ascending, densely leafy (branch leaves often overtopping heads). Peduncles 0.2–3+ cm, glabrous or pilose in lines, bracts 4–6, lanceolate-linear, often subtending heads. Involucres campanulate, 6–12 mm. Phyllaries in 4–5 (–6) series, linear-lanceolate to linear, slightly unequal, bases indurate 1/5–1/2, margins not scarious (outer) to narrowly scarious, erose, hyaline, sparsely ciliolate, green zones linear-lanceolate, outer sometimes ± foliaceous, apices acute to acuminate or long-acuminate to caudate, faces glabrous. Ray-florets 20–40; corollas usually blue to pale lavender, sometimes white, laminae 9–18 × 1.0–1.2 mm. Disc-florets 30–50; corollas yellow or cream becoming pink or purple, (4.5–) 5–6.4 mm, tubes shorter than funnelform throats, lobes triangular to lanceolate, 0.6–0.9 mm. Cypselae purple or brown, obovoid, oblong or oblanceolate, ± falcate, ± compressed, 1.5–3 mm, 3–4-nerved, faces glabrous or sparsely strigillose; pappi white, 5.2–8 mm. 2n = 16.


Phenology: Flowering Aug–Oct.
Habitat: Open, wet soils, spreading into mesic mineral soils, fens, marshes, wet roadsides
Elevation: 100–400 m

Distribution

V20-1169-distribution-map.gif

Alta., Man., Ont., Sask., Ga., Iowa, Mich., Minn., Mo., Nebr.

Discussion

The range of this little known species is badly defined because some specimens attributed to it are in fact white-rayed, glabrate forms of Symphyotrichum puniceum. More work is needed to verify the status of this species.

Lower Taxa

None.
... more about "Symphyotrichum firmum"
not tailed +, rounded +  and obtuse +
subpetiolate +
distinct +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subequal +
scarious +
3mm +  and 20mm +
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† +
(Nees) G. L. Nesom +
subpetiolate +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
auriculate +, acute +  and rounded +
indurate +
3mm;20mm +
Aster firmus +
subpetiolate +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
lanceolate;lance-elliptic +
reduced +
10mm;25mm +
rugulose +  and muricate +
lanceolate-linear +
barbellulate +  and barbellate +
sessile +  and petiolate +
Glossy-leaved aster +
not 2-lipped +  and actinomorphic +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cream becoming pink or purple +, yellow +, white +, usually blue +  and pale lavender +
at maturity , more or less ampliate , tubes usually shorter +
0.5 cm5 mm <br />0.005 m <br /> (0.64 cm6.4 mm <br />0.0064 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
brown +  and purple +
strigillose +  and glabrous +
compressed +, falcate +, oblanceolate +, oblong +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, Man. +, Ont. +, Sask. +, Ga. +, Iowa +, Mich. +, Minn. +, Mo. +  and Nebr. +
100–400 m +
strigillose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, wet soils, spreading into mesic mineral soils, fens, marshes, wet roadsides +
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 /> (1.2 cm12 mm <br />0.012 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
2 (?) +  and 5 (?) +
1.0mm;1.2mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
reflexed;spreading;erect +
triangular +  and lanceolate +
entire +  and crenulate-serrate +
30mm;100mm +
acute +  and rounded +
3mm +  and 20mm +
2-carpellate +
persistent +
25 +  and 40 +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
pilose +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Aug–Oct. +
linear-lanceolate +  and linear +
subpetiolate +  and sessile +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
warners1999a +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
branched +  and simple +
appendaged +  and truncate +
papillate +  and smooth +
Aster lucidulus +  and Aster puniceus var. firmus +
Symphyotrichum firmum +
Symphyotrichum sect. Symphyotrichum +
species +
funnelform-campanulate +  and cylindric +
ampliate +
40 cm400 mm <br />0.4 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
tree +, shrub +  and subshrub +
linear-lanceolate +