Category: P
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Phyllichnium
(In Casuarinaceae) the ridge of a branchlet segment.
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Phyllary (plural phyllaries)
(In Compositae/Asteraceae) one or more of the bracts surrounding the capitulum and forming the involucre. One of the bracts below the flower head in members of the sunflower family. One of the bracts surrounding a capitulum forming the involucre in Asteraceae and other plants with capitulate inflorescences. One of a cluster of bracts (the involucre)…
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Phylad
A phylogenetic line, essentially equal to a clade.
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Phraeatophyte
A plant with deep roots that obtain much of the water needed by the plant from groundwater.
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Phorophyte
A plant, usually a tree, that supports an epiphyte.
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Phoranthium
(In Compositae/Asteraceae) the receptacle of the capitulum [obscure, old-fashioned term].
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Phloem
(Anatomical) the main tissue with foodtransporting function in vascular plants.
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Phenotypic
(Of characters) influenced by both environment and genes.
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Phenology
(Abbreviated from phenomenology) study of the timing of recurring natural phenomena, e.g. flowering times, fruiting times. The study of the effects of climate on living things.
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Phenetics, phenetic classification
The classification of taxa on the basis of overall morphological similarity.