This document provides information about the plant family Asteraceae in 3 paragraphs. It introduces the family, describing its taxonomy, worldwide habitat, and that it includes herbs, shrubs and small trees. Details are given about vegetative characteristics like roots, stems and leaves. The floral structure is explained including inflorescences, flowers, calyx, corolla and reproductive parts. The final paragraph lists some economic uses of Asteraceae plants, including as a food source, for oil and dye, as an insecticide, and for ornamental cultivation.

2. Name Muhammad Zaeem Azam
Roll No. 1413
Class Bs hons (Chemistry)
Presentation Botany
Topic Name Family Asteraceae

3.  Introduction
 Taxonomy
 Habitat / Habit
 Vegetative Characters
 Floral Formula
 Economic Importance

6.  First described by German botanist “Paul
Dietrich Giseke” in 1792.
 Recognized two sub families.
(1) Asteroideae (2) Cichoriodeae

7.  Worldwide distributed.
 Abundant in tropics,
subtropical region.
 Absent only in
Antarcatica.

8.  Mainly
 herbs small shrubs small tree.

9.  Mainly are
 Annual biennual, perennial.

10.  Xerophytes Hydrophytes

11.  Root:
Fibrous tap root.

12.  Stem:
Herbaceous; spiny or without spines;
cylindrical, hairy.

13.  Stem:
Spiny without spines

14.  Leaves:
Petiolate; alternate or opposite.

15.  Leaves:
Alternate Opposite

16.  Inflorescences:

17.  Inflorescences:
Homogamous Heterogamous

18.  Flower:
Sessile; ebracteate; atinomorphic or
zygomorphic; unisexual or hermaphrodite.

19. Atinomorphic Zygomorphic
Flower:

20. Flower:
Unisexual Hermaphrodite

21.  Calyx:
Poorly developed; represented by ring of 5
small teeth; have hair bristles.

22.  Corolla:
Gamopetalous; Tubular ligulate made up
with 5-5 lobed .
.

23.  Stamens:
5 stamens; epipetalous; forming a tube
which encloses style.

24.  Carpel:
Bicarpellary; syncarpous; stigma bifid; ovary
inferior; placentation basal.

25.  Fruits:
Achenial one seeded.

26.  Seed:
Non-endospermic seed.

27.  Ray florets
 Disc florets
 Neutral florets

29.  Used as food.

30.  Source of Oil.

31.  Source of dye.

32.  Used as insecticide(Pyrethrum).

33.  Used as poisons.

34.  Cultivate as ornamental plants.

35.  Barkley, T.M., L. Brouillet, and J. L. Strother. 2006. Asteraceae.
Pages 3-69 in Flora of North America, vol. 19. Oxford University
Press, New York.
 Bayer, R. J. and J. R. Starr. 1998. Tribal phylogeny of the
Asteraceae based on two noncoding chloroplast sequences,
the trnL intron and the trnL-F intergenic spacer. Ann. Missouri Bot.
Gard. 85: 242-256.
 Bremer, K. 1994. Asteraceae: Cladistics and Classification. Timber
Press, Portland, Oregon.