pteridology
— Navneord
– Engelsk
~ the branch of botany that studies ferns
Pteridophyta
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~ containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
pteridophyte
— Navneord
– Engelsk
~ plants having vascular tissue and reproducing by spores
pteridosperm
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~ an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
Pteridospermae
— Navneord
– Engelsk
~ used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
Pteridospermaphyta
— Navneord
– Engelsk
~ used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
Pteridospermopsida
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~ extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
pterion
— Navneord
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~ the craniometric point in the region of the sphenoid fontanelle
Pteris multifida
— Navneord
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~ Asiatic fern introduced in America
Pteris
— Navneord
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~ large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae
Pteris cretica
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~ cultivated in many varieties as houseplants
Pternohyla
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~ burrowing tree frogs
Pternohyla fodiens
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~ terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest
Pterocarpus indicus
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~ tree native to southeastern Asia having reddish wood with a mottled or striped black grain
Pterocarpus macrocarpus
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~ tree of India and Burma yielding a wood resembling mahogany
Pterocarpus angolensis
— Navneord
– Engelsk
~ deciduous South African tree having large odd-pinnate leaves and profuse fragrant orange-yellow flowers; yields a red juice and heavy strong durable wood
Pterocarpus
— Navneord
– Engelsk
~ genus of tropical trees or climbers having usually broadly winged pods
Pterocarpus marsupium
— Navneord
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~ East Indian tree yielding a resin or extract often used medicinally and in e.g. tanning
Pterocarya fraxinifolia
— Navneord
– Engelsk
~ medium-sized Caucasian much-branched tree distinguished from other walnut trees by its winged fruit