microsporophyll lamina

Listing 1 - 3 from 3 for microsporophyll lamina

The Cycad Pages
... microsporophyll lamina firm soft waxy microsporophyll lamina not dorsiventrally thickened dorsiventrally thickened (sterile apex) deflexed level raised apical spine mm long megasporophylls cm long ovules pubescent glabrous lamina orbicular ovate lanceolate (lamina) mm long (lamina) mm wide (lamina ...
plantnet.rbgsyd.nsw.gov.au

Ceratozamia alvarezii
... , 11-31 cm long, 2.5-4.5 cm diam.; peduncle 4-5 cm long; microsporophyll lamina 14-17 mm long, 6-9 mm wide. Seed cones brown, ovoid-cylindrical, 14.5 ...
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Lab VIII - Medullosans and Cycads (3)
... quite tough, due to the thick hypodermis present on both top and bottom of pinnae lamina. What might be the roles of this reinforced structure? Figure 8.6: Haplocheilic stomata in ... ). Since ovulate structures are more commonly preserved that the pollen organs, only a few fossil microsporophyll have been described. Lasiostrobus is a relatively modern-looking cone from the Pennsylvanian consisting of ...
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