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Phytol ogy. The science which treats of the organization of vegeta- 
bles; nearly synonymous with the physiology of vegetables. 
Pileus. The hat of a fungus. 
Pillar. SeeColumellaand Column. 
élose. Hairy, with distinct straightish hairs, 
Pilus. A hair. 
Pimpled. See Papillose. 
Pinna. A wing feather; applied to leafets. 
Pinnate. A leaf is pinnate when the leafets are arranged in two 
rows on the side of a commoa petiole, as in the rose. _ 2 i 
Pinnat/ifid. Cut im apinnate manner. It differs from pinnate, in be- 
ing a simple leaf, deeply parted, while pinnate is a compound of dis- 
tinct leafets. : 
Pistil. The central organ of most flowers, consisting of the germ 
style, and stigma. 
Pistillate. Having pistils, but no stamens. 
Pith. The spongy substance in the centre of the stems and roots of 
most plants. See Medulla. 
Plaited. Folded like a fan. 
Plane. Fiat, with an even surface. 
Plica’tus. See Plaited. 
Plumo’se. Feather-like. ; 
Plu’mula, or Plume. The ascending part of a plant at its first ger- 
mination. 
Plw/rimus. Very many. 
Pod. A dry seed vessel, most commonly applied to legumes and si- 
liques. 
is (from podos, a foot, and sperma, seed.) Pedicel of the seed. 
Pointal. # name sometimes used for pistil. 
Pollen, (properly, fine flour, or the dust that flies in a mill.) The dust 
which is contained within the anthers. 
Polus. any. 
Polyan’drous. Waving many stamens inserted upon the receptacle. 
Polyg’amous., Having some flowers which are perfect, and others 
** stamens only, or pistils only. 
Polymor’phous. Changeable, assuming many forms. 
Polypet’alous. Having many petals. 
Polyphyl/lous. Waving many leaves. 
Polysep’alous. A calyx of more than one sepal. 
Pome. A pulpy fruit, containing a capsule, as the apple. 
Porous. Full of holes. 
Premorse. Ending bluntly, as if bitten off; the same as abrupt. 
Pras’inus. Green, like a leek. i 
Pratensis. Growing in meadow land. 
Prickle, differs from the thorn, in being fixed to the bark; the thorn is 
fixed to the wood. 
Prismatic. Waving several parallel flat sides. 
Probos'cis. An elongated nose or snout, applied to projecting varts 
of vegetables. 
Process. A projecting part. 
Procum’bent. Lying on the ground, 
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