Page 78 - Pharmacognosy-I (02-06-06-102)

Androcium: Absent.
Gynaecium: Syncarpous of two carpels. The ovary is 5-
ribbed,ovoid with a filiform long style and bifid stigma.
Tubular Florets:
Disc florets are about 200 to 300 florets; mostly actinomorphic,
complete, sessile and hermaphrodite.
Calyx: membranous, Cup-shaped.
Corolla: Epigynous, yellow, more or less tubular, sympetalous
showing five short lobes.
Androecium: Syngenesious, i.e. united by the anthers, consisting of

five
epipetalous stamens.
Gynaecium: as in the ligulate floret.

Microscopic Characters:
Bract:
Epidermis; with striated cuticle, anomocytic stomata, ovoid to

spherical
glandular trichomes (Compositae hair) each composed of a short,
biseriate stalk and a biseriate head with two or four cells; covering
trichomes,
T-shaped with moderately thickened walls.

103