MONDAY 7 APRIL

THE SEPARATE HOUR

Dialogue 22: THE VASCULAR CRYPTOGAMS.

• Be prepared to discuss the Vascular Cryptogams.   You must have read the appropriate web pages and only supplement that information with Margulis and Schwartz.  In addition, please review the following in anticipation of the dialogue:
• Holt. Lost Worlds 

Concepts and Terms for Dialogue 22 (The Vascular Cryptogams): Please access the appropriate concepts and terms for the taxa covered today through the front page of the kingdom Viridiplantae.  Any of these terms could be used in the next game.

THE COMMON HOUR

GAME 10: This could include any material covered since the last game.  The following topics will be included:

• Introduction to the Viridiplantae
• The "Green Algae" (Prasinophyta, Chlorophyta, and Charophyta)
• The Non-Vascular Embryophytes (Hepatophyta, Anthocerotophyta, and Bryophyta)
• Darwin. Origin Chapter 11
• Holt. Y2K, Deep Time, and Theory Choice in Geology

WEDNESDAY 9 APRIL

THE SEPARATE HOUR

ACTIVITY: Please look at the following  cultures, slides, preserved specimens, and fossils.  Access sheets on the Psilotophyta, Lycopodophyta, Equisetophyta, and Pteridophyta and extinct vascular cryptogams to guide you in your observations.  Items in red are on demonstration.  All others are in your slide box.  You may access these through eres.

1. Psilotum: living; stem sections (ls and xs).
2. Lycopodium: living; herbarium sheets; preserved plants; your slides of: mature stem x.s.; mature root x.s.; mature strobilus l.s.; mature strobilus x.s.
3. Selaginella: living; preserved plants; your slides of: stem and rhizophore x.s.; strobilus l.s.; demonstrations slides of: young sporophyte w.m.; stem tip l.s.
4. Isoetes: living; preserved plants; your slide of leaf x.s.; demonstrations slides of: sporoanges (megasporangium l.s. and microsporangium l.s.); stem x.s.; stem l.s.
5. Equisetum: living; preserved plants; your slides of: stem x.s.; rhizome x.s.; root x.s.; strobilus l.s. and x.s.; w.m. of spores; demonstrations slides of: root tip l.s.; stem tip l.s.; gametophyte w.m. (with archegonia, antheridia, and developing sporophyte)
6. General fern anatomy: your slides of fern sporangia & fern sori (see below); fern prothallium - antheridia; fern prothallium - archaegonia and/or embryo.
7. Living ferns may include: Botrychium, Osmunda, Pteris, Cyathea, Polypodium, Marsilea, Azolla, & Salvinia.
8. Botrychium: living; preserved; your slide of stem; demonstration slides of gametophyte - antheridium; gametophyte l.s. showing mycorrhizae; sporangia l.s.
9. Ophioglossum: demonstration slide of fruiting spike (fertile pinna)
10. Angiopteris: demonstration slide- sori
11. Marattia: demonstration slides of sori and rhizome xs
12. Fern rhizomes: Osmunda xs, Lygodium xs, Pteridium xs, and Dicksonia xs.
13. Osmundopsida and Pteridopsida spores and sori: Osmunda sporangia, Lygodium sori, Pteris sori, Pellaea sori, Adiantum sori, Trichomanes sori, Gleichenia sori, Cyathea sori; Camptosorus sori, Cyrtomium sori, Onoclea sporangia, Polypodium - your slide of leaflet xs & demonstration slide of sporangia
14. Cyathea: a preserved trunk section; and a preserved frond emerging by circinate vernation.
15. Marsilea: living plants; germinating sporocarps (1 week; 1 day); your slide of rhizome xs; demonstration slide of gametophyte wm
16. Azolla: living; demonstration slides of sporocarp xs and wm
17. Salvinia: living; demonstration slides of sporocarps
18. Herbarium sheets may include: Botrichium species; Osmunda species; Pellea, Adiantum, Dennstaedtia, Pteridium, Asplenium, Polystichum, Dryopteris, Matteuccia, Onoclea, Woodsia, and Polypodium.
19. Fossils: Lepidodendron: Fossils of stems, roots, leaves, and megasporangial strobilus; Lepidocarpon: Coal Ball Peel of seed-like megasporangium; Lepidophloios: Coal Ball Peel of strobilus l.s.; Lepidostrobus: Coal Ball Peel of strobilus x.s.; Stigmaria: Coal Ball Peel of rhizophore and rootlets; Sphenophyllum: Fossils of stems and leaves; Calamites: Fossils of stems; Annularia: Fossils of stems and leaves; Astromyleon: Coal Ball Peel of large root x.s.; Calamodendron: Coal Ball Peel of stem x.s.; Scolecopteris: slide of fossil leaflets; Psaronius: slide of fossil stem sec; Fossil leaf impressions; Tubicaulis: slide of fossil stem and petiole; Zygopteris: slide of fossil stem and petiole; Archaeopteris: fossil leaves and stems. 

THE COMMON HOUR

Dialogue 23: Be prepared to discuss the Gymnosperms.   You must have read the appropriate data sheets (all gymnosperm phyla including the extinct ones) before coming to class.  In addition, please read the following in anticipation of the dialogue:

• Origin chapter 12
• Holt. Nature's Bounty

Concepts and Terms for Dialogue 23 (The Gymnosperms): Please access the appropriate concepts and terms for the taxa covered today through the front page of the kingdom Viridiplantae.  Any of these terms could be used in the next game.

FRIDAY 11 APRIL

THE SEPARATE HOUR

ACTIVITY: Please look at the following  cultures, slides, preserved specimens, and fossils.  Access sheets on the Cycadophyta, Ginkgophyta, Gymnospermophyta, Gnetophyta, and extinct gymnosperms to guide you in your observations.  You may access these through eres.

1. Zamia: living, preserved ovulate and staminate cones; your slides of leaflet xs; petiole xs; male cone axis xs; male cone xs; female cone xs; proembryo ls; embryo ls; Cycas: living: preserved megasporophyll
2. Ginkgo: living; preserved young ovules; mature ovules; staminate cones; your slides of stem xs; male strobilus xs; male strobilus ls; megaspore mother cell; young ovule ls; free-nuclear ovule ls; embryo mls
3. Herbarium sheets of representative conifers.
4. Pinus: living; staminate cones; ovulate cones (brown stage, green stage, and mature); mature seeds; stem showing cross section, tangential section, and radial section; your slides of: 5-needle leaf xs; 1-yr stem xs; wood, xs, radial ls, tangential ls; young root xs; staminate cone ls; mature staminate cone ls & xs; young ovulate cone ls; ovulate cone pollination ls; ovulate cone free-nuclear gametophyte ls; ovule ls; ovule with archegonium & egg ls; ovule with proembryo ls; seed with embryo.
5. Demonstration slides: spruce vegetative bud xs; larch wood xs & ls; Araucaria leaf bud xs.
6. Herbarium Sheets and/or Cones of representative conifers: Pinus, Pseudotsuga, Tsuga, Picea, Larix, Metasequoia, Juniperus, Thuja.
7. Taxus: living (outside); herbarium sheet.
8. Examples of Conifer wood.  See tracheids on the SEM.
9. Ephedra: herbarium sheet and dried plant; preserved staminate and ovulate strobili; demonstration slides of: stem xs; wood xs radial ls & tangential ls; staminate strobilus ls; pollen wm; ovulate strobilus median ls; embryo ls.
10. Welwitschia: demonstration slides of: hypocotyl xs; leaf xs.
11. Gnetum: demonstration slide: leaf xs.
12. Fossils: Callistophyton: slide- stem sec; Dolerotheca: slide- pollen-bearing organ; Heterangium: slide- monostelic stem; Medulosa: slide- large stem; Pachytesta: slide- large seed sec; Cordaites: demonstration slides of stem, root and seed sections; Metasequoia: leaf impressions; Fossil conifer wood; Amber - fossil conifer resin.

THE COMMON HOUR

UNKNOWN 8: Key out unknown tree 1.  Bring your copy of the tree data sheet.

This page maintained by Jack R. Holt & Carlos A. Iudica.  Last modified: 04/06/08