biform
Example Sentences
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Leaves binate, from 4 to 8 cm. long; resin-ducts medial, or with an occasional internal duct; hypoderm biform.
From The Genus Pinus by George Russell Shaw
Leaves in fascicles of 3, from 12 to 25 cm. long; resin-ducts medial, sometimes with an internal duct, hypoderm biform, endoderm with thin outer walls.
From The Genus Pinus by George Russell Shaw
Among Hard Pines there is no Old World species with a biform hypoderm.
From The Genus Pinus by George Russell Shaw
Leaves in fascicles of 2, from 9 to 12 cm. long; resin-ducts medial, hypoderm weak, sometimes of a single row, biform when of two rows, endoderm with thin outer walls.
From The Genus Pinus by George Russell Shaw
Leaves in fascicles of 2 to 5, from 15 to 22 cm. long; resin-ducts internal, hypoderm biform, endoderm with thin outer walls.
From The Genus Pinus by George Russell Shaw