Euchiton involucratus

(G. Forster) Anderberg

Opera Bot. 104: 167. 1991.

Common names: Common-cudweed
Introduced
Basionym: Gnaphalium involucratum G. Forster Fl. Ins. Austr., 55. 1786
Treatment appears in FNA Volume 19. Treatment on page 441.

Biennials or perennials, 30–40 cm; fibrous-rooted; stolons usually absent [reportedly present in Australia and New Zealand]. Aerial stems erect, simple, thinly and persistently white-tomentose. Leaves: basal withering before flowering; cauline 6–10, blades linear to linear-oblanceolate or linear-lanceolate, 3–8 cm × 2–3 mm (largest at midstem), bases subclasping (not ampliate), margins revolute, abaxial faces silvery, tomentose, adaxial faces green, glabrate (shiny). Bracts subtending heads 3–5, 10–15 mm, surpassing heads, plus some shorter. Heads in hemispheric clusters 10–15 mm diam. (sometimes with axillary clusters). Involucres 4–4.5 mm. Phyllaries tawny or rosy-tinged (shiny), oblong, apices rounded to obtuse. Pistillate florets 80–150. Bisexual florets 3–5 (–7). Pappus bristles distinct or basally coherent (falling in groups).


Phenology: Flowering Jul–Oct.
Habitat: Grassy open places, often moist or wet
Elevation: 50–700 m

Distribution

V19-730-distribution-map.gif

Introduced; Calif., Mass., Pacific Islands (New Zealand), Australia

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Euchiton involucratus"
rounded;obtuse +
scarious +
mostly ovate +  and lanceovate or linear +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
(G. Forster) Anderberg +
subclasping +
cuneate +
ampliate +
Gnaphalium involucratum +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
linear;linear-oblanceolate or linear-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
5-ribbed +, 3-ribbed +  and 2-ribbed +
muriculate +, papillate +  and smooth +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
6 (?) +  and 10 (?) +
Common-cudweed +
actinomorphic +
purplish +  and purple +
flattened +  and obovoid-ellipsoid +
Calif. +, Mass. +, Pacific Islands (New Zealand) +  and Australia +
50–700 m +
papillate +
winged +  and beaked +
dispersed +
Grassy open places, often moist or wet +
indeterminate +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
homogamous +  and heterogamous +
each +  and sessile +
narrowly campanulate;cylindric +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
rarely lanceovate +  and lanceolate +
2-carpellate +
coherent +  and distinct +
persistent +
coherent +  and distinct +
Flowering Jul–Oct. +
bearing subulate enations +, hairy +  and bristly +
conic;more or less columnar +
exalbuminous +
Introduced +
white-tomentose +
appendaged +  and truncate +
papillate +
Compositae +
Euchiton involucratus +
Euchiton +
species +
perennial +  and biennial +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +