P Flashcards
Palea
the upper and innermost of the two bracts enclosing the flowers of grasses
Palmate
arranged like the fingers of a hand leaf veins or leaflets.
Panicle (paniculate)
a flower-cluster in which the branches are racemose. the flowers being pedicellate
Papilionate (paniculate)
said of the corolla of the pea flower and other legumes. having a standard. wings and keel.
Papillae
minute pimple-like protuberances
Papillose
bearing papillae
Pappus
the hairs. bristles. awns. or scales (representing the calyx) at the top of the ovary or achene in Asteraceae. When the pappus consists of fine bristles. these may appear simple.
barbellate (with tiny barbs) or feathery (plumose).
Parasite
a plant which grows in or upon another obtaining nourishment from it. e.g. Mistletoe. Dodder. Nuylsia and Orobanche
Parasite
a plant which grows in or upon another obtaining nourishment from it. e.g. Mistletoe. Dodder. Nuylsia and Orobanche
Partial flower-heads
heads small ( 1-20-flowered). crowded in a compound head which is usually globoid or ovate and may be surrounded by a general involucre.
Partite
divided into parts almost to base
Pectinate
comb-like. with lobes very narrow and close
Pedicel
the stalk of an individual flower in an inflorescence.
Peduncle
the main stalk of an inflorescence. or of an individual flower when only one flower is present.
Peltate
having the stem or support attached underneath not at the edge, disc-shaped
Pencilliate
arranged like a tuft of hairs
Penniveined
arranged like a tuft of hairs
Perennial
a plant which lives for a number of years and which does not die after flowering and fruiting once
Perfoliate
base of leaf completely encircles stem
Perianth
a collective term for calyx and corolla .. used particularly in describing flowers where the 2 whorls are not easily distinguished or in which only I of these whorls is present.
Perianth-lobe (corolla-lobe)
that part of the perianth which is free from the apex to about the middle or less.
Perianth-segment (corolla-segment = petal
that part of the perianth which is free from
apex to base or at least below the middle.
Perianth-tube (corolla-tube)
that part of the perianth which remains entire. i.e. dot’s not exist as a lobe or segment.
Pericarp
the wall of a ripened ovary ( = fruit).
Perigynous
floral parts arising around the ovary and not beneath it
Persistent
applies to parts of plants which remain after flowering. or to the persistent bark of rough-barked Eucalyptus species
Petal
one of the parts of the corolla. generally coloured
Petaloid
resembling a petal
Petiole
leaf stalk
Petiolate
applied to leaves which have a petiole
Phyllary
a bran of the involucre in certain genera of the Asteraceae
Phyllichnia
branchlet with striae. as in Allocasuari11a
Phyllode
a leaf-like petiole which does not give rise to a leaf blade: a modification which occurs often in Acacia
Pileate
having the form of a cap: as in opercula of some Eucalyptus species
Pilose
shaggy, with soft hairs
Pinna
the primary division or leaflet of a compound leaf
Pinnate
arranged like the divisions of a feather: used of a compound leaf with leaflets placed on either side of the common stalk
Pinnatifid
a leaf in which the lobes are cut half-way to the midrib.
Pinnule
a secondary pinna or leaflet in a bipinnate leaf
Pistil
the female organ of a flower consisting of ovary. style and stigma. it may consist of I carpel in which case it is a simple pistil. or of 2 or more united carpels in which case it is a
compound pistil. A flower may have a gynoecium of a single pistil (carpel). a compound pistil (united carpels) or 2 or more pistils (carpels).
Pistillate
having a pistil or pistils. i.e. the female parts of the flower but no functional male parts or stamens
Pitcher
a tubular or cup-shaped vessel: the terminal portion of a leaf blade: may contain a secreted digestive fluid
Placenta
the part of the ovary to which the ovules are attached
Placentation
the arrangement of ovules within the ovary. Sec illustrations for diff<’rent types of placentation.
Plano-convex
flat one side. convex the other
Plicate
folded into pleats.
Plumose
feather-like, having long fine hairs. as in the pappus of some Asteraceae
Pneumatophere
respiratory roots as in Avicennia
Pod
a dry fruit formed from a single carpel or composed of 2 carpels separated by a partition
Pollen-presenter
stigmatic disc, style-end as in Grevillea
Pollinium (pl. pollinia)
mass of cohering pollen grains
Polygamous
when the same plant bears male, female (unisexual) and bisexual (perfect) flowers.
Polymorphic
variable in habit. or displaying many diversities of form
Pome
an indehiscent fruit in which the fleshy receptacle surrounds several dry carpels. e.g. apple.
Posterior
the parts of a flower nearest the flowering axis
Procumbent
trailing along the ground but not necessarily prostrate or rooting
Proliferous
bearing off-shoots or adventitious leaf buds on the leaves or flowers
Prostrate
fairly closely pressed to the- surface of t he ground: trailing
Pruinose
having a waxy. powdery secretion on the surface: a ‘bloom’.
Pubescent
covered with short. soft downy hairs
Punctate
with translucent or coloured dots
Pungent
ending in a stiff, sharp point. or tip.
Pyriform
pear-shaped
Pyrenes
nutlets; the small stone of a drupe
