Family 11 : Lamiaceae (LABIATAE) – characters , importance , pattern

(Mint Family)

Diagnostic characters

  1. Habit: Annual herbs or rarely shrubs.
  2. Roots: Tap root
  3. Stem: Herbaceous; quadrangular; glandular hairs are present.
  4. Leaves: Petiolate; opposite and decussate; simple; exstipulate;
  5. Inflorescence: Verticillaster (opposite axillary cymes)
  6. Flower: Pedicillate; ebracteate; zygomorphic; complete; hermaphrodite; hypogynous;
  7. Calyx: 4 or 5 sepals; fused: tubular of funnel shaped, sometimes two lipped or bilabiate.
  8. Corolla: 4 or 5 petals; gamopetalous; forms two lips (bilabiate), upper lip has two notches and lower lips has three notches.
  9. Stamens:.4 stamens; didynamous; epipetalous; basifixed.
  10. Carpel: Bicarpellary; syncarpous; ovary superior; tetralocula due to formation of false septum; placentation aNile.
  11. Fruits: Carcerulus with persistant calyx.
  12. Seed: Non-endospermic.

Floral formula and floral diagram

LAMIACEAE (LABIATAE) Floral formula and floral diagram

LAMIACEAE (LABIATAE) floral diagram

Economic Importance

  1. Food: Mint is used as salad. Tubers of toe hys are edible.
  2. Condiments: Mentpa and Oeimum are used as condiments.
  3. Beverages: Ocimum canum gives mucilaginous seeds. These are
  4. used in beverages as tukhmalanga .
  5. Medicinal plants: Many drugs of this family give drugs. Peppermint is obtained from Memha piperata. ()chumn kllimandscharicum contain camphor.
  6. Perfumes: Many plants contain abundant volatile aromatic oils like thymole, lavender oil and rosemary oil.
  7. Ornamental plants: Some species of Salvia are cultivated for their beautiful flowers.

Distribution pattern

It is a large family. It has 200 genera and 3000 species. It is distributed all over the world.

Common species

  • Ocimum basilicum

  •  Mentpa viridis (mint)
  • Lavendula vera (Lavender)

  • Salvia splendens

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