Friday, September 28, 2012

Lab 6: GYMNOSPERMS (Cycads, Ginkgos and Conifers)

Family: Cycadaceae

Note pinnately compound leaf.  Draw a leaflet showing venation. How does this leaf differ from those of Zamia
Cycas revoluta

Cycas circinalis

Family: Zamiaceae

Zamia floridana

Zamia furfuracea

Macrozamia moorei

 Ceratozamia robusta

Encephalartos sp.

Dioon edule

Family: Ginkgoaceae

Note the short shoots and leaf shape

Ginkgo biloba


Family: Pinaceae
Note long and short shoots

Cedrus deodara (true cedar)

Picea spp. (spruce)

Pseudotsuga spp.

Tsuga canadensis

Pinus glabra

 Pinus palustris (long leaf pine)

Pinus (microstrobili)
Look closely at leaf arrangement, long/short shoots
Pinus taeda

Pinus lambertiana (sugar pine)

Pinus sabiniana (digger pine)

Note the thin ovulate scales
Pinus strobus (white pine)

Family: Cupressaceae

Cunninghamia lanceolata (China fir)

Taxodium distichum

Which is the leaf arrangement
Cryptomeria japonica

Metasequoia glyptostroboides

Sequoiadendron giganteum (giant redwood, sequoia)

Platycladus orientalis

Juniperus virginiana var silicicola (Southern red cedar)

Family: Podocarpaceae

Podocarpus macrophyllus

Reduced cone with fleshy seed
Nageia nagi

Family: Araucariaceae
Monkey puzzle tree
Araucaria bidwillii

Araucaria heterophylla

Agathis robusta
Family: Taxaceae
Taxus floridana

Torreya nucifera
Family: Cephalotaxaceae (extra)
Cephalotaxus sp.

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