326 GLOSSARY. 



Perfoliate. Surrounding the stem on all sides and perforated 

 by it. Jt differs from connate, in not consisting of two 

 leaves. Eupatorium perfolialum, or American Thorough- 

 wort. 



Perianth. A sort of calyx which is immediately contiguous to 

 the other parts of fructification. The calyx properly so 

 called. 



Pericarp. A seed vessel, or whatever contains the seed. 



Permanent. See Persistent. 



Persistent. Not falling off. Those parts of a flower are per- 

 sistent which remain till the fruit is ripe. 



Personate. Masked. Having the mouth of the corolla closed 

 by a prominent palate ; as in the Toadflax (Antirrhinum.) 



Petal. The leaf of a corolla, usually coloured. 



Petaloid. Resembling petals. 



Petiole. The stalk which supports a leaf 



Phtenogamous. Not Cryptogamous. Applied to all plants 

 which have visible flowers containing stamens and pistils. 



Pilose. Hairy. With a stiff pubescence. 



Pinna. The leafets or divisions of a pinnate leaf. 



Pinnate. A leaf is pinnate when the leafets are arranged in 

 two rows on the side of a common petiole; as in the Ash, 

 Elder, and Rose. 



Pinnatijid. Cut in a pinnate manner. It differs from pinnate 

 in consisting of a simple or continuous leaf, not compound. 



Pistil. A constituent part of a flower including the germ, style, 

 and stigma. In a regular flower it forms the central part. 



Pistillate. Having pistils, but no stamens. 



Plaited. Folded like a ruffle or fan ; as the leaves of Veratrnrn 

 viride. 



Plumose. Feathery. Feather like. 



Plumula. Part of the corculum of a seed, which afterwards 

 forms a new plant with the exception of the root. 



Pod. A dry seed vessel, not pulpy; most commonly applied to 

 legumes and siliques. 



Pointal. See Pistil. 



Polyandrous. Having many disconnected stamens inserted into 

 the receptacle. 



Polycolyledonous. Having seeds with more than two cotyle- 

 dons ; as in the Pines. 



Polygamous. Having some flowers which are perfect, and 

 others which have stamens only, or pistils only. 



Polygynous. Having many styles. 



Polymorphous. Changeable. Assuming a variety of forms. 



Polypelalous. Having many petals. 



Polyphyllous. Having many leaves. Applied to the calyx. 



Pome. A pulpy fruit having a capsule within it ; as the apple 

 and pear. 



