GLOSSARY. 



427 



Persistent; not falling off; remaining be- 

 yond the time when similar organs usu- 

 ally fall off. 



Personate corolla. Masked; having the 

 throat closed by a prominent palate, as in 

 Linaria. 



Petal. The (usually) delicate colored flow- 

 ci- leaf. In a flower of one petal (or unit- 

 ed petals), the corolla and petal are the 

 same ; in a flower of more than one petal 

 the corolla is the whole and the petals are 

 the parts. 



Petaloid; petal like ; delicate and colored, 

 or expanded, like a petal. 



Petiolar; seated on, or belonging to, the 

 petiole. 



Pttiolate; having, or being supported on, a 

 petiole; not sessile. 



Petiole. The stem or foot-stalk of a leaf. 



Petiolulate; having a partial or subdivided 

 petiole. 



Petiolidf. A little or partial petiole ; the 

 foot stalk of a leaflet. 



Phunogamous, or phanerogamous; hav- 

 ing visible genuine stamens or pistils; 

 bearing true flowers. 



Phyllodiiim. The imitation, analogue, or 

 substitute of a leaf, usually the dilated 

 foliaceous petiole of an abortive com- 

 pound leaf. 



PUoae; hairy; composed of, or clothed 

 with, distinct straightish hairs. 



Finn e. The paired or opposite leaflets of 

 a pinnate leaf. 



Pinnate leaf; having distinct articulated 

 leaflets in pairs, on opposite sides of a 

 simple petiole. 



Plnnulijid leaf, or frond. Cleft in a pin 

 nate manner, but the segments united or 

 confluent at base. 



Pitinatijidly; in a pinnatifid manner. 



Pinnatiseet; pinnately dissected or divid- 

 ed, but the segments not articulated 

 with the petiole. 



Pinnules. The leaflets or subdivisions of 

 a bi tri- or multi-pinnate leaf, or frond. 



Pistil. The central organ of a fertile flower, 

 consisting usually of ovary, stj/lfl, and 

 stigma : sometimes the style is wanting, 

 or, in other words, the stigma is ses- 

 sile. 



Pistillate flowers. Those which have 

 pistils, but not stamens. 



Pixtilliferous; bearing pistils. 



Pitted; having small shallow depressions. 



Placenta (plural, placenta). That part of 

 a pericarp to which the seeds are attach 

 ed ; the line, or ridge projecting in the 

 cavity of the ovary, which bears the 

 ovules. 



Placentitl; pertaining to the placenta. 



Placeriiferoun; bearing the placenta. 



Plane: flat, and with an even surface. 



Pldno-coii'cex; flat on one side and con 

 vex on the other. 



Plicate; plaited ; folded or crimped, like a 

 fun, or ruitle. 



Plumose; feather-like. A pappus is plu- 

 mose, when each hair has other hairs 

 arranged on opposite sides of it, as in 

 Oirsium. 



Pod. A dry seed-vessel, narrow and moro 

 or less elongated, and usually of 2 valves. 

 The term is often applied indiscriminately 

 to both Legumes and Siliques. 



Pollen ; the fertilizing powder contained 

 in the anthers. 



Pollen-masses, or Pollinia. The waxy 

 masses of pollen, in the Asclepias and 

 Orchis families. 



Poly, In composition ; many. 



PolyadelpJious; having the filaments unit- 

 ed in 3 or more parcels. 



Polyandrous; having more than ten hypo- 

 gynous stamens. 



Polycotyledonous ; having many seed- 

 leaves. 



Polygamo-diiKcious, or dioicou3 ; having 

 perfect and imperfect ( or fertile and 

 sterile) flowers on distinct plants. 



Polygamous; having some flowers perfect, 

 and others either staminate, pistillate, or 

 neuter. 



Polygynmis; Avhen the pistils are nume- 

 rous or indefinite. 



Polymorphous; variable ; assuming, or apt 

 to assume, many different forms. 



Polypetalvus; having many distinct petals, 

 or, at least, more than one. 



Polysepalous; having many distinct sepals, 

 or more than one. 



Pome. An apple ; a fleshy fruit formed of 

 several cartilaginous or bony carpels, 

 imbedded in pulp and invested by the 

 tube of the adherent calyx. 



Pores; small holes, or tubular openings. 



Porous; full of holes, cells, or tubular 

 openings. 



Pra-morse; end-bitten ; ending blunt, as if 

 bitten off. 



Precocious flowers ; appearing before the 

 leaves. 



Prickle. A sharp process arising from the 

 bark, only, and not originating in the 

 wood. 



Primary; first in a series in order of time, 

 or in importance, opposed to secondary. 



Primordial; first in Order; usually ap- 

 plied to the first genuine leaves, or 

 those which are next above the cotyle- 

 dons or seminal leaves. 



Prismatic ; like a prism ; having several 

 angles and intermediate flat faces. 



Process. A protuberance, eminence, or 

 projecting part. 



Procumbent; lying on the ground, with- 

 out putting forth roots. 



Produced; extended, or lengthened out. 



Proliferous; producing its like in an un- 

 usual way, as lateral bulbs ; or putting 

 forth a voim.2 and unusual accessory 

 growth, from the centre of an umbel, 

 flower, &c. 



Prostrate ; lying flat, or close on the ground 



