Flower: Incomplete, Perfect or Imperfect). Floral Symmetry: Radial or Bilateral).
Perianth: +, Differentiated. ... Floral formula: * or X, Kâ, C 5 , A 5 , G 2 ; achene.
*ASTERACEAE Flower: Incomplete, Perfect or Imperfect). Floral Symmetry: Radial or Bilateral). Perianth: +, Differentiated. Calyx (K)=0-â, Lacking or highly modified and present as Pappus only (Scales, Bristles, Hairs), Distinct or Coalescent, Epigynous. Corolla (C)=3-5, Coalescent, Tubular or Strap-Shaped, arising from Epigynous Zone. Androecium (A)=4,5, Anthers Coalescent (Syngenesious), Adnate to Epigynous Zone. Gynoecium: Syncarpous, Pistil=1, Carpels/pistil=2, Locules/pistil=1, Ovules/locule=1. Ovary: Inferior. Placentation: Basal. Inflorescence: Head. Fruit: Achene (Cypsela). Phyllotaxy: Alternate, Opposite, or Whorled). Leaves: Simple to Pinnate. Stipules: â. Other distinctive features: Flowers in Heads either all Tubular, all Strap-shaped, or a combination of both; Heads subtended by Involucral Bracts (Phyllaries); Flowers at perimeter of Head often Female. ______________________________________________________________________ ________________________________________________________________________________________
Floral formula: * or X, Kâ, C 5 , A 5 , G 2 ; achene Profile Diagram of Flower
Transverse Diagram of Flower
Ligulate Flower
Tubular Flower
