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April 28, 2010 | History
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Edition | Availability |
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1
Flora of North America: north of Mexico
1994, Oxford, Oxford University Press
in English
0195082427 9780195082425
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2 |
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3
Flora of North America: North of Mexico Volume 2: Pteridophytes and Gymnosperms (Flora of North America: North of Mexico)
October 27, 1993, Oxford University Press, USA
in English
0195082427 9780195082425
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Book Details
First Sentence
"Characters used to circumscribe fern families often relate to cryptic features, e.g., presence or absence of annulus and its orientation, length and diameter (number of cells) of the sporangial stalk, nature of the spores (whether all one kind or dissimilar on a given plant), spore shape, color, ornamentation, and number per sporangium, stem and petiole cross-section anatomy, and adaxial grooving (or lack thereof) of the rachis and costae."
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Feedback?April 28, 2010 | Edited by Open Library Bot | Linked existing covers to the work. |
December 10, 2009 | Created by WorkBot | add works page |