Category: P
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Protogynous
(Of a flower) with the stigma receptive before the anthers open, i.e. first functionally female and afterwards functionally male.
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Protocorm
The ephemeral structure resulting from the germinated orchid seed and from which the first true shoot and root differentiate. A nearly uniform structure formed after germination of an Orchidaceae seed that makes an association with a fungus via penetration of specific cells and from which the first true shoot and root differentiate.
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Prothallus
(In pteridophytes) a small green plant bearing the sexual organs, resulting from the germination of a spore. The first or false thallus formed in the germination of the sexually produced spores in ferns; a delicate cellular structure bearing the sexual organs.
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Proterogynous
Old spelling of protogynous.
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Proteranthy
Flowers developing when the plant is leafless.
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Proteranthous
Producing flowers before the new leaves sprout, or after the leaves have fallen.
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Proterandrous
Old spelling of protandrous.
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Protandry
Stamens releasing pollen before the stigma in the same flower is receptive.
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Protandrous
(Of a flower) shedding pollen before the stigma is receptive, i.e. first functionally male and afterwards functionally female.
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Prostrate
Lying flat on the ground. Trailing on the ground; flat; procumbent. Lying flat upon the ground; typically without adventitious roots. Lying horizontally. A plant of low-growing, ground hugging habit, such as the prostrate junipers. Lying face down. A plant of low-growing, ground-hugging habit, such as the prostrate junipers. Lying with the body extended, usually face…