Symphyotrichum ciliatum

(Ledebour) G. L. Nesom

Phytologia 77: 277. 1995.

Common names: Rayless annual or rayless alkali aster aster cilié
Illustrated
Basionym: Erigeron ciliatus Ledebour Icon. Pl. 1: 24. 1829
Synonyms: Aster angustus (Lindley) Torrey & A. Gray Aster brachyactis S. F. Blake Brachyactis angusta (Lindley) Britton Brachyactis ciliata subsp. angusta (Lindley) A. G. Jones
Treatment appears in FNA Volume 20. Treatment on page 499. Mentioned on page 467, 500.

Annuals, 7–70+ cm. Stems 1, ascending to erect (straight), bluish yellowish green, often red-tinged, ± succulent, glabrous. Leaves bluish (green) thin, sometimes ± fleshy, margins usually entire, sometimes serrulate, strigoso-ciliate to scabrous, midribs conspicuous, apices acute to short-acuminate, faces glabrous; basal withering by flowering, petiolate, blades spatulate, 15–205 × 1.5–9 mm, bases attenuate; proximal cauline usually withering by flowering (with clusters of smaller leaves in axils, often elongating into branches); cauline sessile, blades linear-oblanceolate, (10–) 30–80 (–150) × 1–4 (–9) mm, gradually reduced distally, bases slightly dilated and clasping to rounded. Heads (disciform) in ± dense, narrow to pyramidal, paniculiform to racemiform arrays, branches decumbent (proximal) to ascending (distal); peduncles 0–1 cm, glabrous, bracts linear-lanceolate to linear, crowding heads. Involucres narrowly campanulate, 5–7 (–11) mm. Phyllaries in 3–4 series, loose, linear to narrowly oblanceolate, subequal or outer sometimes longer, bases scarious, margins narrowly scarious proximally (outer), scabrous, green zones foliaceous (outer and mid) to lanceolate (inner), apices acute (rarely obtuse), mucronulate, faces glabrous. Ray-florets 0. Pistillate florets 75–95+ in 4–5+ series; laminae 0 (corolla-tubes ± 2 mm, shorter than style-branches). Disc-florets ± 14; corollas whitish turning pink, ± ampliate, tubes slender, longer than narrowly funnelform limbs, 3.5–5 mm, lobes narrowly triangular, ± 0.2 mm. Cypselae purple or grayish with purple streaks, obovoid to oblong-obovoid, ± compressed, 1.5–2.5 mm, 2–4-nerved (faint), faces hirsuto-strigose; pappi white or pinkish, 4–6 mm. 2n = 14.


Phenology: Flowering Aug–Oct.
Habitat: Moist, brackish soils, prairies, steppes, salt marshes (Hudson Bay), summer-receding prairie ponds, open grounds in loess hills, irrigation channels, winter-salted highways, railroads, waste grounds
Elevation: 0–2000+ m

Distribution

V20-1120-distribution-map.gif

Alta., B.C., Man., N.B., N.W.T., Ont., Que., Sask., Yukon, Alaska, Colo., Idaho, Ill., Ind., Iowa, Kans., Maine, Mich., Minn., Mo., Mont., Nebr., N.Y., N.Dak., Ohio, Okla., Pa., S.Dak., Utah, Wash., Wis., Wyo., n Eurasia (w to Rumania)

Discussion

Symphyotrichum ciliatum is introduced east of the Prairies in winter-salted wastegrounds and roadsides; it is native in northern Ontario, however, in the saltmarshes of the western shore of James Bay. It is native to the steppes of Eurasia, westward to Rumania.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Symphyotrichum ciliatum"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and racemiform +
indeterminate +  and determinate +
decumbent +  and ascending +
pyramidal +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Ledebour) G. L. Nesom +
1.5 cm15 mm <br />0.015 m <br /> (20.5 cm205 mm <br />0.205 m <br />) +
rounded +, dilated +, attenuate +  and spatulate +
scarious +
1.5mm;9mm +
Erigeron ciliatus +
8 cm80 mm <br />0.08 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
linear-oblanceolate;attenuate;spatulate +
reduced +
1mm;4mm +
rugulose +  and muricate +
linear-lanceolate to linear +
paniculiform +  and racemiform +
decumbent;ascending +
pyramidal +
barbellulate +  and barbellate +
Rayless annual or rayless alkali aster +  and aster cilié +
not 2-lipped +  and actinomorphic +
whitish turning pink +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
beaked +, 2-ribbed +  and 5-ribbed +
grayish +  and purple +
strigillose +  and glabrous +
compressed +, obovoid +  and oblong-obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Man. +, N.B. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Colo. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Maine +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.Y. +, N.Dak. +, Ohio +, Okla. +, Pa. +, S.Dak. +, Utah +, Wash. +, Wis. +, Wyo. +  and n Eurasia (w to Rumania) +
0–2000+ m +
hirsuto-strigose +  and glabrous +
winged +  and beaked +
dispersed +
Moist, brackish soils, prairies, steppes, salt marshes (Hudson Bay), summer-receding prairie ponds, open grounds in loess hills, irrigation channels, winter-salted highways, railroads, waste grounds +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
4.5mm;5mm +
2 (?) +  and 5 (?) +
0.1mm;0.2mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
triangular +
serrulate +  and entire +
not +  and hyaline +
strigoso-ciliate +  and scabrous +
coarsely serrate +  and crenate or entire +
conspicuous +
2-carpellate +
pinkish +  and white +
persistent +
25 +  and 40 +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Aug–Oct. +
linear +  and narrowly oblanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
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 +
red-tinged +, green +  and bluish yellowish +
ascending +  and erect +
succulent +
appendaged +  and truncate +
papillate +  and smooth +
Aster angustus +, Aster brachyactis +, Brachyactis angusta +  and Brachyactis ciliata subsp. angusta +
Symphyotrichum ciliatum +
Symphyotrichum sect. Conyzopsis +
species +
funnelform-campanulate +  and cylindric +
at maturity , more or less ampliate , tubes usually shorter +
slender +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
7 cm70 mm <br />0.07 m <br /> (70 cm700 mm <br />0.7 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +