hypogean
Example Sentences
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With Cycas pectinata the cotyledons are hypogean, and a true leaf first breaks through the ground with its petiole forming an arch.
From The Power of Movement in Plants by Charles Darwin
Long glass tubes, open at both ends, are useful in many other ways, especially in the rearing and study of the smaller hypogean insects or those which bore and live in the stems of plants.
From Directions for Collecting and Preserving Insects by C. V. Riley
Michalet also says that they are often hypogean.
From The Different Forms of Flowers on Plants of the Same Species by Charles Darwin
When the cotyledons are hypogean, that is, remain buried in the soil, the hypocotyl is hardly developed, and the epicotyl or plumule rises in like manner as an arch through the ground.
From The Power of Movement in Plants by Charles Darwin
With dicotyledonous seeds, after the protrusion of the radicle, the hypocotyl breaks through the seed-coats; but if the cotyledons are hypogean, it is the epicotyl which breaks forth.
From The Power of Movement in Plants by Charles Darwin