Perfoliate; having the stem apparently pierced through the leaf.
Perianth; a term for the envelopes of a flower, where the calyx and corolla are not clearly distinguishable. Pericarp; the seed-vessel, or fruit; the ovary in a mature state.
Perigonium; a name for the envelope of the flower; said to be doable when there is both calyx and corolla, but often used synonymously with Perianth, which see. , Perigynium; the sac (formed by the union of two bract lets) which incloaes the ovary of the Caritee.
Parigr20218 petals and stamens. Inserted on the calyx. or ;ghee adhering to the inner surface of the calyx tub6 and thus surrounding the pistils.
Peripherical; fixed or coiled round the circumference, or periphery.
Perisperm; a deposit in many seeds, affixed to, or sur rounding, the embryo; synonymous with albumen, whichflee.
Peristomi; the circle of teeth or bristle-like processes which surround the orifice of the theca or capsule of the mosses.
Persistent; not falling off; remaining beyond the time when similar organs fall off Personate corolla. Masked; having the throat closed by a prominent palate, as in Lin aria.
Petal. The (usually) delicat- colored flower leaf. In a flower of one petal (or united 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 parte.
Pstaioid; petallike; delicate and colored, or expanded, like a petal.
Petiolar; seated on, or belonging to. the petiole. Petiolate; having, or being supported on, a petiole; not sessile.
Petiole. The stem or foot-stalk of s leaf.
Petiolulate, having a partial or subdivided petiol . Petiolate. A little or partial petiole ; the foot-stalk of a leaflet.
Phosnogamov,s, or phanerogamovs; having visible genu ine stamens or pistils; bearing true flowers.
Phyliodiurn. The imitation, analogue, or substitute of a leaf, usually the dilated foliaceoua petiole of an abortive compound leaf. • Pitose; hairy; composed of, or clothed with, distinct, straightish hairs.
Pinner. The paired or opposite leaflets of a pinnate leaf.
Pinnate leaf; distinct articulated leaflets in pairs, on opposite sides of a simple petiole.
Pinnatifid leaf, or frond. Cleft in a pinnate manner, but the segments united or confluent at base.
Pirotatifidiy; in a pinnatifid manner.
Pinnatisect; pinnately dissected or divided, bat the seg ments not articulated with the petiole.
Pinnulee. The leaflets or subdivisions of a hi- tri- or mul ti-pinnate leaf, or frond.
Pistil. The central organ of a fertile flower, consisting usually of ovary, style, and stigma; sometimes the style is wanting, or, in other words, the stigma is sessile.
Pistillate flowers. Those which have pistils, hut not stamens.
Pistilliferous ; bearing pistils.
Pitted; having small sin llow depressions.
Placenta (plural, placentce). That part of a pericarp to which the seeds are attached; the line or ridge project ing in the cavity of the or ary, which bears the ovules. Placental; pertaining to the placenta.
Plarentiferous • bearing the placenta.
Plane; flat, and with an even surface.
rollaX ; flat on one side and convex on the other., Plicate; plaited; foloed or crimped, like a fan or ruffle. Plumose; feather-like. A pappus is plumose, when each hair has other hairs arranged on opposite aides of It; as in cirsium.
Pod. A dry seed-vessel, narrow and more or less elon• gated, and usually of two valves. The term is often applied indiscriminately to both legumes and alliquee Pollen; the fertilizing powder contained in the anthers. Pollen-masses or Pollinia. The waxy masses of pollen in the Aeclepias and orcha families.
Poly; in composition, many.
Polyadelphoue; having the filaments united in three or more parcels.
Polyandrous; having more than ten hypogynoua stamens. Polycotyledonaus; having many seed-leaves. Polygamo-diatious, or dioicous ; having perfect and im perfect (or fertile and sterile) flowers on distinct plants.
Polygamous; having some flowers perfect, and others either staminate, pistillate, or neuter.