GLOSSARY 
Palmate — With divisions radiating out from the centre, as in the horse- 
chestnut leaf. 
Panicle — A loose, compound cluster with flowers on individual stalks. 
Papilionaceous — With the formation of the Pulse family flowers, as the 
pea blossom, with standard, wings and keel. 
Pappus — Bristles and the like surmounting the fruit in the Composite 
family. 
Parted — Deeply cleft, but not quite divided. 
Pedicel — The stalk of a separate flower in a cluster. 
Peduncle — The main stalk which supports a solitary flower or collection 
of flowers. 
Perennial — Lasting from year to year. 
Perfect — With both pistil and stamens. 
Perianth — The floral envelope, including calyx and corolla, a term used 
commonly when the petals and sepals are indistinguishable, as in most 
of the lily family. 
Petiole — The stalk of a leaf. 
Pinnate — Arranged as in a feather. 
Pistil — The part of the flower which bears the seeds. The pistil includes 
the ovary, the style, and the stigma, but the name is commonly applied 
to the visible portion (see illustration in Introductory Chapter). 
Pistillate — Having pistils (said of a female flower) . 
Polygamous — Having perfect, staminate and pistillate flowers, on the same 
or different plants. 
Pome — A fruit like the apple. 
Raceme— An arrangement in which the flowers succeed one another on a 
single stalk, each flower having a stalk of its own (see illustration in 
Introductory Chapter). 
Ray-flowers — The flowers at the margin of a composite flower-head, when 
they are distinct from the disk. 
Regular — Each part uniform in size and shape, thus all the petals alike. 
Rhizome — See Root-stalk. 
Root-stalk — A horizontal stem on or under the ground, generally giving 
off successive roots at the nodes. 
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