Symphyotrichum parviceps

(E. S. Burgess) G. L. Nesom

Phytologia 77: 288. 1995.

Common names: Smallhead or small white aster
IllustratedEndemic
Basionym: Aster ericoides var. parviceps E. S. Burgess in N. L. Britton & A. Brown, Ill. Fl. N. U.S. 3: 379. 1898
Synonyms: Aster parviceps (E. S. Burgess) Mackenzie & Bush Aster pilosus subsp. parviceps (E. S. Burgess) A. G. Jones
Treatment appears in FNA Volume 20. Treatment on page 511. Mentioned on page 467, 468, 500.

Perennials (sometimes short-lived), 30–100 cm, colonial or cespitose; long-rhizomatous or with short, branched caudices. Stems 1–3+, ascending to erect (straight, slender, reddish), sparsely to densely pilosulous to hirtellous, proximally glabrescent. Leaves thin, margins strigoso-ciliate to scabrous, apices mucronulate, abaxial faces glabrate to sparsely pilose and midveins ± pilose to glabrate, adaxial glabrous or glabrate to pilosulous or hirsutulous; basal withering by flowering, subpetiolate, blades oblanceolate to narrowly oblanceolate or spatulate, 10–40 × 3–7 mm, bases cuneate, sheathing, margins sparsely serrate apically, apices obtuse, mucronate, faces sparsely pilose; proximal cauline usually withering by flowering, sessile or subsessile (often with axillary clusters of small leaves), blades oblanceolate to lanceolate, 40–80 × 2–5 mm, bases cuneate, margins entire or serrulate apically; distal sessile, blades linear to subulate, 4–100 × 1–6 mm, reduced distally, bases cuneate, margins entire to weakly serrulate, faces glabrate or glabrous. Heads in narrow or wide, pyramidal, paniculiform arrays, branches ascending or arching, secondary branches (10 cm or less) secund and erect, densely leafy, heads crowded, sparsely to moderately pilose. Peduncles 3–20 (–40) mm, glabrate or glabrous, bracts 3–6+, appressed or ascending, linear to subulate, 2–4 mm, scabrous, aristate, glabrous, grading into phyllaries. Involucres cylindric to cylindro-campanulate, (2.7–) 3.1–4.1 (–4.9) × ± 3 mm. Phyllaries in 3–5 series, appressed, subulate (outermost) to oblong-lanceolate to linear-lanceolate (inner) or linear (innermost), unequal, bases indurate 1/2–3/4, margins scarious, erose, hyaline, sparsely ciliolate or not, green zones lanceolate, apices slightly spreading, often purplish, often involute, acute to acuminate or cuspidate, sometimes aristate, faces usually glabrous, sometimes glabrate. Ray-florets (9–) 11–17 (–23); corollas usually white, seldom pink, laminae (3.7–) 5–5.5 (–7.3) × 0.6–1.3 mm. Disc-florets 5–16 (–28); corollas pale-yellow becoming purplish, (2.3–) 2.5–3.3 (–3.7) mm, tubes shorter than narrowly funnelform throats, lobes lanceolate, 0.4–0.8 (ratio 0.25) mm. Cypselae whitish or gray, obovoid, compressed, 0.8–1.5 × 0.4–0.6 mm, 3–4-nerved, faces sparsely to moderately strigillose; pappi white, 3–4 mm. 2n = 16, 32, 48.


Phenology: Flowering Aug–Oct.
Habitat: Open, dry, sandy, or loamy soils, open woods, barrens, prairies, fields, roadsides, old cemeteries
Elevation: 200–400 m

Distribution

V20-1140-distribution-map.gif

Ark., Ill., Iowa, Kans., Mo., Okla.

Discussion

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Symphyotrichum parviceps"
48 +, 32 +  and 16 +
glabrate +  and sparsely pilose +
glabrate +  and pilosulous or hirsutulous +
not tailed +, rounded +  and obtuse +
subpetiolate +
serrate +  and sheathing +
distinct +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
subequal +
scarious +
3mm +  and 7mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
pyramidal +
wide +  and narrow +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(E. S. Burgess) G. L. Nesom +
subsessile +, sessile +  and subpetiolate +
serrulate +, entire +, serrate +  and sheathing +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
cuneate +, oblanceolate +  and lanceolate +
indurate +
2mm;5mm +
Aster ericoides var. parviceps +
subsessile +, sessile +  and subpetiolate +
0.4 cm4 mm <br />0.004 m <br /> (10 cm100 mm <br />0.1 m <br />) +
linear;subulate +
reduced +
1mm;6mm +
rugulose +  and muricate +
ascending +  and appressed +
aristate +, linear +  and subulate +
arching;ascending +
barbellulate +  and barbellate +
sessile +  and petiolate +
Smallhead or small white aster +
not 2-lipped +  and actinomorphic +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
pale-yellow becoming purplish +, pink +  and white +
at maturity , more or less ampliate , tubes usually shorter +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
gray +  and whitish +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
strigillose +  and glabrous +
compressed +  and obovoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
fertile +  and bisexual +
fertile +  and bisexual +
Ark. +, Ill. +, Iowa +, Kans. +, Mo. +  and Okla. +
200–400 m +
subpetiolate +
serrate +  and sheathing +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
strigillose +, glabrate +, glabrous +  and pilose +
mucronate;obtuse;cuneate;oblanceolate;narrowly oblanceolate or spatulate +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, dry, sandy, or loamy soils, open woods, barrens, prairies, fields, roadsides, old cemeteries +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
3.1 +  and 4.1 +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
cylindric;cylindro-campanulate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.73 cm7.3 mm <br />0.0073 m <br />) +
5mm;5.5mm +
2 (?) +  and 5 (?) +
0.6mm;1.3mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
reflexed;spreading;erect +
lanceolate +
subsessile +, sessile +  and subpetiolate +
entire +  and weakly serrulate +
40mm;80mm +
not +, ciliolate +, pilose +, strigoso-ciliate +  and scabrous +
cuneate +, oblanceolate +  and lanceolate +
2mm +  and 5mm +
less pilose +  and glabrate +
2-carpellate +
persistent +
25 +  and 40 +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
glabrous +  and glabrate +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Aug–Oct. +
subulate +  and oblong-lanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
leafy +  and secund +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
Illustrated +  and Endemic +
branched +  and simple +
ascending +  and erect +
1 +  and 3 +
appendaged +  and truncate +
papillate +  and smooth +
Aster parviceps +  and Aster pilosus subsp. parviceps +
Symphyotrichum parviceps +
Symphyotrichum sect. Symphyotrichum +
species +
funnelform-campanulate +  and cylindric +
ampliate +
with short , branched caudices +  and long-rhizomatous +
cespitose +  and colonial +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +