Biology 337: Divisions ( Glossary | Divisions )
Taken Spring 2005, with Dr. Plant. Information here is based primarily upon notes from class but some from external sources like the web.

Hepatophyta
Anthocerophyta
Bryophyta
Psilotophyta
Lycophyta
Sphenophyta
Pterophyta
Rhyniophyta
Zosterophyllophyta
Trimerophytophyta
Cycadophyta
Gingkophyta
Coniferophyta
age .
division-name Anthocerophyta
evolution .
gametophyte .
habit .
leaves No true leaves. Thalloids.
life-cycle Homosporous
Produce bi or unisexual thalloid gametophytes. Partial dependance of sporophyte on gametophyte.
Antheridia and archegonia are sunken into surface of gametophyte thalloids.
Sporophyte is an upright stemlike structure. More advanced than hepatophyte:
  • larger

  • covered with a cuticle

  • has stomata

  • sporophyte has chloroplasts

  • a meristem between sporangium and foot allows for growth resulting in greater spore production

links Handy quick rundown
members Hornworts
rhizome .
roots none
sporangia .
stems unbranched
stomata Yes.
traits .
vascular-system No conducting tissue.
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