GLOSSARY. 



427 



Persl4e>it: not falling olf; remaiDing be- ! 

 yond the time wlieu similar orsrans usu- \ 

 ally fall off. ^ | 



Perso7iaU corolla. Masked ; having the | 

 throat closed by a prominent palate, as ill ' 

 Liiiana. j 



Petal. The (usually'i delicate colored flow- 

 er leaf. la 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. 



Petuloid; petal like ; delicate and colored, 



or expanded, like a petal. 

 Petioliir; s^itMi on, or belonging to, the 



petiole. 



Pctiolate: having, or being supported on, a 



petiole ; not sessile. 

 retiole. The ste a or foot-stalk of a leaf 

 PeW'lidate; having a partial or subdivided 



petiole. 



Petiolule. A little or partial petiole ; the 

 foot stalk of a leaflet. 



Ph£7ing(imom, or phanerogamoits: hav- 

 ing visible genuine stamens or pistils; 

 bearing true flowers. 



Piiyllodiam. The imitation, analogue, or 

 substitute of a leaf, — usually the dihated 

 foliaceoas petiole of an abortive com- 

 pound leaf 



P'do^e, ; hairy: composed of, or clothed 

 witii, di-Linct -trai_'!itish hairs. 



Piaii -. Tiie paired or opposite leaflets of 

 a pinnate k-af 



Pianntc It-af ; having distinct articulated 

 leaflets in pairs, on opposite sides of a 

 sim[>le petiole. 



Pt?2/ia^i/z''nfaf or frond. Cleft in a pin 

 nate manner, but the segments united or 

 confluent at base. 



Piiinatijidlu; in a pinnaMfid manner. 



Pinnatisr^d; piuuately dissected or divid- 

 ed,— but the segments nut articulated 

 with the petiole. ~ 



P'mnule-'i. 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, st l\ and 

 sHgina : sometimes the st'jl- is wanting, 

 — or, in other words, the stigma is ses- 

 sile. 



Pistillate flowers. Those which have 

 pistils, but not stamons. 



Pi-itilliferou's; bearing pistils. 



Pitted; having sma'l -hallow depressions. 



Placenta (plural, ji' ii- nt- •. That part of 

 a pericarp to which tl.e scods are attach 

 od ; the line, or ridgr projecting in the 

 cavity of the ovary, which bears the 

 ovuIcs. 



Placent iJ: pertaining to the placenta. 

 Pl'icen'iferous; bearing the placenta. 

 Plane; flat, and with an even surfitce. 

 Plano-convex; fiat on one side and con 



vex on the other. 

 Plicate; plaited; folded or crimped, like a 



\dxu or ru He. 



Plumose; feather-lCce. A pappus is \,\vl- 

 mose, when each hair has other hairs 

 arranged on ox^posite sides of it, — as in 

 Cii-sium. 



Pod. A dry seed-vessel, narrow and more 

 or less elongated, and i^sually of 2 valves. 

 The term is often applied indiscriminately 

 io'boXh. Legumes and Siliques. 



Pollen ; the fertilizing powder contained 

 in the anthers. 



Pollen-masses, or PolUnia. The waxy 

 masses of pollen, in the AsclejAa^ and 

 Orchis families. 



Poly, in composition : many. 



Polyadelpjlious; having the 'filaments unit- 

 ed in 3 or more parcels. 



Polydndrous; having more than ten hypo- 

 gynous stamens. 



Polycotyledonous ; having many seed- 

 leaves. 



Polygamo-di ccious, or dioicotis ; having 

 perfect and imperfect (or fertile and 

 sterile) flowers on distinct plants. 



Polygamous; having some flowers perfect, 

 and others either itaminate, pistillate, or 

 neuter. 



Polygynous; when the pistils are nume- 

 rous or indefinite. 



Polymhrplinus; variable; assuming, or apt 

 to assume, many different forms. 



Polypetalous; having many distinct petals, 

 — or. at least, more than one. 



Polysepalou^: 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 tlie adherent calyx. 



Pores; small holes, or tubular openings. 



Porous; full of lioles, cells, or tubular 

 openings. 



Pnmorse: end-bitten; ending blunt, as if 

 bitten off'. 



/*/'<fcofio?i.s flowers; appearing before the 

 leaves. 



Pridde. 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 secondar-;/. 



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 fiat 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 Tike in an un- 

 usual way, — as lateral bulbs ; or putting 

 forth a young and unusual accessory 

 growth, from the centre of an umbel, 

 flower. &c. 



Proi^trate ; lying flat, or close on the ground 



