Chrysanthemum lacustre Brot.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Asteraceae

• Scientific Name

  Chrysanthemum lacustre Brot.

• Description

  Species Description - More robust and leafy stemmed than no. 1 [Chrysanthemum leucanthemum L.], with closely and sharply serrate, not at all pinnatifid lvs, the stem in well developed plants few-branched above, the heads averaging a bit larger, the disk to 2.5 cm wide; basal lvs wanting or inconspicuous; lower cauline lvs narrowed to a petiolar base but mostly soon deciduous; middle cauline lvs well developed, elliptic or elliptic- oblanceolate, commonly 6–11 × 1.5–3 cm, tending to clasp at base; 2n=18. Native to sw. Europe, occasionally escaped from cult. into fields and moist, low ground in our range. June–Aug. (Leucanthemum l.)

• Common Names

  Portuguese daisy