I am adding a brief description of the plant

   FNA | Family List | FNA Vol. 20 | Asteraceae
<http://www.efloras.org/browse.aspx?flora_id=1&start_taxon_id=10074> |
Tussilago
<http://www.efloras.org/browse.aspx?flora_id=1&start_taxon_id=134025>
 1. *Tussilago farfara* Linnaeus, Sp. Pl. 2: 865. 1753.

Common Name: Coltsfoot

  *Basal leaves:* blades palmately 5–12-lobed or -angled, mostly 5–20+ ×
5–20+ cm, margins irregularly denticulate. *Cauline leaves* mostly 5–25 mm.
*Calyculi:* bractlets 5–15 mm. *Phyllaries* mostly 7–15 mm. *Ray
corollas:*laminae (2–)4–10 mm.
*Disc corollas* 10–12 mm. *Cypselae* 3–4 mm; *pappi* 8–12 mm, ± surpassing
involucres. *2n* = 60.

  Flowering spring–summer. Disturbed sites, sandy or rocky soils, calcareous
sites; 0–800 m; introduced; Saint-Pierre and Miquelon; B.C., N.B., Nfld. and
Labr. (Nfld.), N.S., Ont., P.E.I., Que.; Conn., Ill., Ind., Maine, Md.,
Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Tenn., Vt.,
Va., Wash., W.Va., Wis.; Eurasia.

Flowering heads of *Tussilago farfara* close at night (laminae of ray
corollas arch and roll inward). The species is becoming an invasive weed in
some areas.

    Regards
Tanay


-- 
Tanay Bose
+91(033) 25550676 (Resi)
9830439691(Mobile)

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