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The fertilizing cell, its varying form and behavior by Nelly Peery, 1890

The fertilizing cell, its varying form and behavior by Nelly Peery, 1890, Page 69

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67. under any artificial conditions tried but in the majority of cases germination proceeded satisfactorily as shown by the table. The average time required for all which responded to our efforts at culture was 15 hours. The quickest to germinate were Viola pedesta, and Astragalus canadensis, which germinated in two hours each. The slowest was Pinus sylvetrus, which required 4 days. The longest tubes measured were of
 
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