Mindblown: a blog about philosophy.
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Pteridophyte
A fern or fern-ally; member of a group of plants with alternating generations, the main generation producing spores. Colloquial term used for all seedless vascular plants, e.g. lycopods and ferns, a polyphyletic assemblage. A large class of plants, some fossil members of which were among the earliest land plants, characterized by a lack of seeds…
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Psilate
(Of pollen) without sculpturing on the surface.
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Pseudowhorl
Leaves arranged one per node, but the nodes so short and close together so as to give the impression of a whorl of leaves. A stem with the leaves singly per node, but the internodes being so short that it resembles a whorl.
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Pseudoverticillate
Appearing whorled or verticillate but not actually so.
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Pseudoterminal
Looking as if terminal but really axillary; for example, a pseudoterminal bud is formed where a lateral bud replaces a terminal bud that is damaged or lost.
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Pseudostipule
(In compound leaves) the lowermost leaflet if and when it is very close to the stem and the leaf insertion point.
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Pseudostem
‘False’ stem consisting of leaf sheaths or leaf bases, the apical meristem remaining at ground level (as in Musaceae). A false stem consisting of folded or rolled leaf bases (e.g., as in banana plants). A false stem consisting of leaf sheaths or leaf bases emerging vertically from a horizontal stem as found in Musaceae and…
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Pseudostaminode
(In Amaranthaceae) appendage found between the filaments that is not a modified stamen.
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Pseudostaminate
With pseudostaminodes.
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Pseudoscape
A false scape, with some leaves actually on the stem (a true scape is leafless, with all leaves in a basal rosette).
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