Symphyotrichum subulatum var. parviflorum

(Nees) S. D. Sundberg

Sida 21: 907. 2004.

Common names: Southwestern annual saltmarsh aster
Basionym: Tripolium subulatum var. parviflorum Nees Gen. Sp. Aster., 157, 286. 1833
Synonyms: Aster subulatus var. cubensis (de Candolle) Shinners Erigeron expansus Poeppig ex Sprengel Symphyotrichum expansum (Poeppig ex Sprengel) G. L. Nesom
Treatment appears in FNA Volume 20. Treatment on page 482. Mentioned on page 481.

Plants (10–) 70–150 cm. Stems usually simple, often with short, leafy branches proximally. Heads 20–100, in open, diffuse arrays, primary branches longer than peduncles. Involucres 5–6.2 mm. Phyllaries 30–42, subulate to lanceolate, narrow, green zones narrowly lanceolate. Ray-florets (23–) 27–37 (–42) in (1–) 2 series; laminae usually white, sometimes pink, 1.9–3 × 0.2–0.5 mm, longer than pappi, drying in 1–2 coils (apices shallowly to deeply lobed). Disc-florets (6–) 8–15; corollas 3.4–4.4 (–4.7) mm. Cypselae 1.5–2.7 mm; pappi 3.5–3.8 (–4.2) mm. 2n = 10.


Phenology: Flowering Jul–Nov(–Jan).
Habitat: Roadsides, marshy habitats, often weedy
Elevation: 0–1100(–4000) m

Distribution

V20-1083-distribution-map.gif

Ala., Ariz., Calif., Fla., Nev., N.Mex., Okla., Tex., Utah, Mexico, West Indies, Central America, n South America, in Asia (Japan), Pacific Islands (Hawaii)

Discussion

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Nees) S. D. Sundberg +
sessile +, subpetiolate +, petiolate +  and long-petiolate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subentire +, attenuate +, subulate +, lanceolate +, rounded +  and cuneate +
indurate +
1.5mm;10mm +
Tripolium subulatum var. parviflorum +
sessile +, subpetiolate +, petiolate +  and long-petiolate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (11.3 cm113 mm <br />0.113 m <br />) +
narrowly lanceolate;subulate +
0.5mm;5.5mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
sessile +  and subpetiolate +
Southwestern annual saltmarsh aster +
not 2-lipped +  and actinomorphic +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
tinged with purple +, lavender +, pink +  and white +
at maturity , more or less ampliate , tubes usually shorter +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
light-brown +  and purple +
glabrate +  and strigillose +
compressed +, narrowly obovoid +  and fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Ariz. +, Calif. +, Fla. +, Nev. +, N.Mex. +, Okla. +, Tex. +, Utah +, Mexico +, West Indies +, Central America +, n South America +, in Asia (Japan) +  and Pacific Islands (Hawaii) +
0–1100(–4000) m +
strigillose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Roadsides, marshy habitats, often weedy +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
cylindric;turbinate +
0.5 cm5 mm <br />0.005 m <br /> (0.62 cm6.2 mm <br />0.0062 m <br />) +
0.85 cm8.5 mm <br />0.0085 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
pink +  and white +
1.9mm;3mm +
0.2mm;0.5mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
less spreading;erect +
triangular +
sessile +, subpetiolate +, petiolate +  and long-petiolate +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
purple-tinged +  and hyaline +
20mm;100mm +
strigilloso-ciliolate +
subentire +, attenuate +, subulate +, lanceolate +, rounded +  and cuneate +
1.5mm +  and 10mm +
2-carpellate +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
persistent +
25 +  and 40 +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering Jul–Nov(–Jan). +
subulate +  and lanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
not brittle +
appendaged +  and truncate +
papillate +  and smooth +
Aster subulatus var. cubensis +, Erigeron expansus +  and Symphyotrichum expansum +
Symphyotrichum subulatum var. parviflorum +
Symphyotrichum subulatum +
variety +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
30 cm300 mm <br />0.3 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
lanceolate +