Omalotheca sylvatica

(Linnaeus) Schultz-Bipontinus & F. W. Schultz in F. W. Schultz

in F. W. Schultz, Arch. Fl., 311. 1861.

Common names: Woodland Arctic-cudweed gnaphale des bois
Illustrated
Basionym: Gnaphalium sylvaticum Linnaeus Sp. Pl. 2: 856. 1753
Treatment appears in FNA Volume 19. Treatment on page 440. Mentioned on page 439.

Plants 10–70 cm. Leaves basal and cauline; blades 1-nerved, linear to narrowly oblanceolate or lanceolate, 2–8 cm × 2–10 mm, distal cauline smaller, linear, faces bicolor, abaxial gray, silvery sericeous, adaxial green, glabrescent. Heads (20–90) in loose, spiciform (leafy-bracteate, interrupted) arrays (4–35 cm, occupying 1/3–5/6 plant heights, simple or branched at bases, primary-axes mostly visible). Involucres campanulo-turbinate, 5–6.5 mm. Phyllaries some or all with conspicuous dark-brown spot distal to middle. Cypselae cylindric to fusiform, minutely strigose; pappus bristles basally connate, falling together. 2n = 56.


Phenology: Flowering Jul–Sep(–Oct).
Habitat: Open woods, boggy woods, rocky slopes, clearings, fields, borders of woods, roadsides, muddy banks, disturbed sites
Elevation: 10–500 m

Distribution

V19-727-distribution-map.gif

St. Pierre and Miquelon, B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Maine, Mich., N.H., N.Y., Pa., Vt., Wis., Europe, Asia (Caucasus), Asia (Iran), Asia (Siberia)

Discussion

The circumboreal Omalotheca sylvatica may have been introduced from Eurasia (Frére Marie-Victorin 1995). Omalotheca alpigena (K. Koch) Holub and O. caucasica (Sommier & Levier) S. K. Cherepanov were treated as synonyms of O. sylvatica by A. J. C. Grierson (1975); they have been recognized as distinct species in other treatments.

Selected References

None.

Lower Taxa

None.
... more about "Omalotheca sylvatica"
silvery +  and gray +
scarious +
mostly ovate +  and lanceovate or linear +
indeterminate +  and determinate +
Guy L. Nesom +
(Linnaeus) Schultz-Bipontinus & F. W. Schultz in F. W. Schultz +
cuneate +
Gnaphalium sylvaticum +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
linear;narrowly oblanceolate or lanceolate +
smaller +
2mm;10mm +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
connate +  and distinct +
Woodland Arctic-cudweed +  and gnaphale des bois +
actinomorphic +
reddish +, purplish +  and whitish +
cylindric +  and fusiform +
St. Pierre and Miquelon +, B.C. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Maine +, Mich. +, N.H. +, N.Y. +, Pa. +, Vt. +, Wis. +, Europe +, Asia (Caucasus) +, Asia (Iran) +  and Asia (Siberia) +
10–500 m +
strigillose +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open woods, boggy woods, rocky slopes, clearings, fields, borders of woods, roadsides, muddy banks, disturbed sites +
singly +  and aggregated +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
campanulo-turbinate +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
persistent +
Flowering Jul–Sep(–Oct). +
distal +  and middle +
in F. W. Schultz, Arch. Fl., +
bearing subulate enations +, hairy +  and bristly +
flat;concave +
exalbuminous +
Illustrated +
appendaged +  and truncate +
papillate +
Compositae +
Omalotheca sylvatica +
Omalotheca +
species +
2 cm20 mm <br />0.02 m <br /> (70 cm700 mm <br />0.7 m <br />) +