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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	Bryophyta
evolution	.
gametophyte	.
habit	There are 2 common forms: Cushiony Feathery (usually epiphytic)
leaves	no true leaves, however, have leaf-like structure (which does not contain vascular tissue). Leaf is one cell thick and has a midrib, called costa, that is slightly thicker because it is several cell layers thick. In spagnidae, the leaf is one cell thick but contain dead empty cells surrounded by living ones creating a hexagonal patchwork like sight under the microscope. The dead areas can absorb water, while the thickenings beside these patches are actually alive and contain chloroplasts.
life-cycle	Homosporous Bi or Unisexual. Partial dependance of sporophyte on gametophyte. The gametangia are produced at the tip of a stem or branch. The antheridia appear in splash cups. The archegonia are found at the tip of female gametophyte. The archegonia are long-necked and stalked which receive sperm through intercepting splashes. The sporangia is at the top of a seta, connected via a foot and contained within a capsule. The entire structure is called a sporophyte and grows on top of the female gametophyte. The calyptra comes from the venter and will remain attached to the capsule. When sporophyte is mature, at the top of the capsule is an operculum, a lid that bursts off revealing peristomal teeth. These teeth are moisture-sensitive and upon dehissing, will curl backwards revealing spores which can be disseminated into the wind. bridae: After spore germination protonema is formed upon which a bud will follow that creates a "leafy" gametangeia sphagnidae: GT has a distinctive bushy-leafy form.
links	Cool animation
members	Mosses. Of three classes: Bryidae (true mosses), Sphagnidae (peat mosses), Andreacidae (granite mosses)
rhizome	.
roots	.
sporangia	.
stems	unbranched
stomata	yes
traits	.
vascular-system	Has rudimentary conducting tissue Hadrom = found in the center, are composed of elogated, dead hydroid cells and are used to conduct water. Leptom = are found surrounding Hadrom, and contain elongaged leptoids which conduct nutrients

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