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primary medullary rays
Listing 1 - 2 from 2 for primary medullary rays
phloem transfer cells acanthaceae juss upper lip pinnately veined glandular unicellular male flowers primary vascular tissue androecial members fertile stamens absent internal phloem narrow wood corolla tube calyx lobes unbranched adaxial hypodermis gland dotted angiosperm families aceraceae juss
Angiosperm Families - Acanthaceae Juss.
... deep-seated (sometimes), or superficial. Nodes unilacunar. Primary vascular tissue bicollateral, or centrifugal. Cortical bundles absent. Medullary bundles present (rarely), or absent. Internal phloem ... fibres; with vessels. Vessel end-walls simple. Vessels without vestured pits. Primary medullary rays narrow. Wood diffuse porous; not storied; parenchyma paratracheal. Reproductive type, pollination. ...
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Angiosperm Families - Aceraceae Juss.
... , or superficial (usually). Nodes tri-lacunar. Primary vascular tissue in a cylinder, without separate bundles; centrifugal. Cortical bundles absent. Medullary bundles absent. Internal phloem absent. ... vessels. Vessel end-walls horizontal to oblique; simple. Vessels without vestured pits. Primary medullary rays wide (occasionally), or narrow. Wood ring porous; not storied; parenchyma paratracheal. ...
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