absent secondary thickening

Listing 1 - 10 from 153 for absent secondary thickening

Angiosperm Families - Acanthaceae Juss.
... Cortical bundles absent. Medullary bundles present (rarely), or absent. Internal phloem present, or absent. Secondary thickening developing from a conventional cambial ring. ‘Included’ phloem absent. Xylem ... absent. Flavonols present (rarely), or absent; when present, kaempferol and quercetin (traces). Ellagic acid absent (8 species, 7 genera). Saponins/sapogenins present (rarely), or absent. ...
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Angiosperm Families - Aceraceae Juss.
... absent. Medullary bundles absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. The secondary phloem stratified into hard (fibrous) and soft (parenchymatous) zones, or not stratified. ‘Included’ phloem absent ... Acer species), or absent (one Acer species, Dipteronia). Arbutin absent. Saponins/sapogenins present, or absent. Aluminium accumulation not found ...
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Angiosperm Families - Achatocarpaceae Heimerl.
... margins entire. Stem anatomy. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. ‘Included’ phloem absent. Xylem with vessels. Vessel end-walls simple ... mealy). Embryo well differentiated. Cotyledons 2. Embryo curved. Physiology, biochemistry. Ellagic acid absent. Geography, cytology. Sub-tropical to tropical. Warm America. Taxonomy. Subclass Dicotyledonae; ...
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Angiosperm Families - Aizoaceae Rudolphi
... Cork cambium present, or absent; initially deep-seated. Nodes unilacunar. Primary vascular tissue centrifugal. Internal phloem absent. Secondary thickening absent, or developing from a conventional cambial ring, or anomalous; via concentric cambia (in the woodier genera,), or from a single cambial ring. ‘Included’ phloem present, or absent ...
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Angiosperm Families - Alstroemeriaceae Dum.
... leaf veins without phloem transfer cells (Alstroemeria). Vessels absent. Stem anatomy. Cork cambium absent. Secondary thickening absent. Xylem with vessels. Vessel end-walls horizontal; ... persistent. Physiology, biochemistry. Not cyanogenic. Alkaloids absent. Proanthocyanidins absent. Flavonols present; kaempferol and quercetin. Ellagic acid absent. Saponins/sapogenins probably present. Geography, ...
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Angiosperm Families - Altingiaceae Lindl.
... initially superficial. Cortical bundles absent. Medullary bundles absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. ‘Included’ phloem absent. Vessels without ... delphinidin. Flavonols present; quercetin and myricetin. Ellagic acid present. Arbutin absent. Sugars transported as oligosaccharides + sucrose (Liquidambar). Geography, cytology. Temperate ...
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Angiosperm Families - Amaranthaceae Juss.
... absent. Medullary bundles present (commonly), or absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring, or anomalous; when anomalous, via concentric cambia. ‘Included’ phloem present, or absent ...
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Angiosperm Families - Amborellaceae Pichon.
... . Stem anatomy. Nodes unilacunar (with one broad trace). Internal phloem absent. Secondary thickening developing from a conventional cambial ring. ‘Included’ phloem absent. Xylem presumably with tracheids; without vessels. Primary medullary rays narrow. Sieve ...
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Angiosperm Families - Anacardiaceae Lindl.
... vascular tissue centrifugal. Cortical bundles absent. Medullary bundles absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. ‘Included’ phloem absent. Xylem without fibre ... , quercetin, and myricetin. Ellagic acid absent (3 genera, 4 species). Arbutin absent. Saponins/sapogenins present (rarely), or absent. Aluminium accumulation not found. Sugars ...
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Angiosperm Families - Annonaceae Juss.
... absent. Medullary bundles absent. Internal phloem absent. Secondary thickening developing from a conventional cambial ring. The secondary phloem stratified into hard (fibrous) and soft (parenchymatous) zones. ‘Included’ phloem absent ...
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