1. HORNWORTS ~ 6 Genera, ~ 350 Species (Anthocerotae) Megaceros
Anthoceros
~ 6 Genera, ~ 350 Species

2. Notothylas
Dendroceros
Phaeoceros

3. Life Stages

4. Gametophyte: Chloroplasts

5. Gametophyte: Thallus Anatomy

6. Gametophye: Anchoring and Water Uptake

7. Mucilage Cavities and Ventral Pores
Gametophye:
Mucilage Cavities and Ventral Pores
Fig in Schofield 1985

8. Gametophyte : Symbionts I

9. Gametophyte: Symbionts II

10. Gametophyte: Male Gametangia

11. Gametophyte: Male Gametangia
Fig in Schofield 2001

12. Gametophyte: Female Gametangia

13. Female Gametangia

14. Sporophyte: Early Development
Fig in Schofield 1985

15. Sporophyte

16. Sporophyte: Growth

17. Sporophyte

18. Sporophyte: Stoma

19. Sporophyte Development
Fig in Schofield 1985

20. Sporophyte: Sporangium

21. Sporophyte: Sporangium Dehiscence6

22. Moss
Liverwort
Hornwort

23. Hypothesis I: Bryophytes Monophyletic
(Moss)
(Hornwort)
(Liverwort)
All Other Plants
Hypothesis I: Bryophytes Monophyletic
Green Algae

24. (Moss)
(Hornwort)
(Liverwort)
Rest of Plants
Hypothesis II: Bryophytes Paraphyletic
(Some Internal Monophyly)
Green Algae

25. (Hornwort)
(Moss)
(Liverwort)
Rest of Plants
Hypothesis III: Bryophytes Paraphyletic
(No Internal Monophyly)
Green Algae