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BIO257: Australian Biodiversity > P > Flashcards

P Flashcards

1
Q

Palea

A

the upper and innermost of the two bracts enclosing the flowers of grasses

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2
Q

Palmate

A

arranged like the fingers of a hand leaf veins or leaflets.

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3
Q

Panicle (paniculate)

A

a flower-cluster in which the branches are racemose. the flowers being pedicellate

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4
Q

Papilionate (paniculate)

A

said of the corolla of the pea flower and other legumes. having a standard. wings and keel.

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5
Q

Papillae

A

minute pimple-like protuberances

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6
Q

Papillose

A

bearing papillae

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7
Q

Pappus

A

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).

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8
Q

Parasite

A

a plant which grows in or upon another obtaining nourishment from it. e.g. Mistletoe. Dodder. Nuylsia and Orobanche

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9
Q

Parasite

A

a plant which grows in or upon another obtaining nourishment from it. e.g. Mistletoe. Dodder. Nuylsia and Orobanche

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10
Q

Partial flower-heads

A

heads small ( 1-20-flowered). crowded in a compound head which is usually globoid or ovate and may be surrounded by a general involucre.

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11
Q

Partite

A

divided into parts almost to base

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12
Q

Pectinate

A

comb-like. with lobes very narrow and close

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13
Q

Pedicel

A

the stalk of an individual flower in an inflorescence.

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14
Q

Peduncle

A

the main stalk of an inflorescence. or of an individual flower when only one flower is present.

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15
Q

Peltate

A

having the stem or support attached underneath not at the edge, disc-shaped

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16
Q

Pencilliate

A

arranged like a tuft of hairs

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17
Q

Penniveined

A

arranged like a tuft of hairs

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18
Q

Perennial

A

a plant which lives for a number of years and which does not die after flowering and fruiting once

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19
Q

Perfoliate

A

base of leaf completely encircles stem

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20
Q

Perianth

A

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.

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21
Q

Perianth-lobe (corolla-lobe)

A

that part of the perianth which is free from the apex to about the middle or less.

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22
Q

Perianth-segment (corolla-segment = petal

A

that part of the perianth which is free from

apex to base or at least below the middle.

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23
Q

Perianth-tube (corolla-tube)

A

that part of the perianth which remains entire. i.e. dot’s not exist as a lobe or segment.

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24
Q

Pericarp

A

the wall of a ripened ovary ( = fruit).

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25
Q

Perigynous

A

floral parts arising around the ovary and not beneath it

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26
Q

Persistent

A

applies to parts of plants which remain after flowering. or to the persistent bark of rough-barked Eucalyptus species

27
Q

Petal

A

one of the parts of the corolla. generally coloured

28
Q

Petaloid

A

resembling a petal

29
Q

Petiole

A

leaf stalk

30
Q

Petiolate

A

applied to leaves which have a petiole

31
Q

Phyllary

A

a bran of the involucre in certain genera of the Asteraceae

32
Q

Phyllichnia

A

branchlet with striae. as in Allocasuari11a

33
Q

Phyllode

A

a leaf-like petiole which does not give rise to a leaf blade: a modification which occurs often in Acacia

34
Q

Pileate

A

having the form of a cap: as in opercula of some Eucalyptus species

35
Q

Pilose

A

shaggy, with soft hairs

36
Q

Pinna

A

the primary division or leaflet of a compound leaf

37
Q

Pinnate

A

arranged like the divisions of a feather: used of a compound leaf with leaflets placed on either side of the common stalk

38
Q

Pinnatifid

A

a leaf in which the lobes are cut half-way to the midrib.

39
Q

Pinnule

A

a secondary pinna or leaflet in a bipinnate leaf

40
Q

Pistil

A

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).

41
Q

Pistillate

A

having a pistil or pistils. i.e. the female parts of the flower but no functional male parts or stamens

42
Q

Pitcher

A

a tubular or cup-shaped vessel: the terminal portion of a leaf blade: may contain a secreted digestive fluid

43
Q

Placenta

A

the part of the ovary to which the ovules are attached

44
Q

Placentation

A

the arrangement of ovules within the ovary. Sec illustrations for diff<’rent types of placentation.

45
Q

Plano-convex

A

flat one side. convex the other

46
Q

Plicate

A

folded into pleats.

47
Q

Plumose

A

feather-like, having long fine hairs. as in the pappus of some Asteraceae

48
Q

Pneumatophere

A

respiratory roots as in Avicennia

49
Q

Pod

A

a dry fruit formed from a single carpel or composed of 2 carpels separated by a partition

50
Q

Pollen-presenter

A

stigmatic disc, style-end as in Grevillea

51
Q

Pollinium (pl. pollinia)

A

mass of cohering pollen grains

52
Q

Polygamous

A

when the same plant bears male, female (unisexual) and bisexual (perfect) flowers.

53
Q

Polymorphic

A

variable in habit. or displaying many diversities of form

54
Q

Pome

A

an indehiscent fruit in which the fleshy receptacle surrounds several dry carpels. e.g. apple.

55
Q

Posterior

A

the parts of a flower nearest the flowering axis

56
Q

Procumbent

A

trailing along the ground but not necessarily prostrate or rooting

57
Q

Proliferous

A

bearing off-shoots or adventitious leaf buds on the leaves or flowers

58
Q

Prostrate

A

fairly closely pressed to the- surface of t he ground: trailing

59
Q

Pruinose

A

having a waxy. powdery secretion on the surface: a ‘bloom’.

60
Q

Pubescent

A

covered with short. soft downy hairs

61
Q

Punctate

A

with translucent or coloured dots

62
Q

Pungent

A

ending in a stiff, sharp point. or tip.

63
Q

Pyriform

A

pear-shaped

64
Q

Pyrenes

A

nutlets; the small stone of a drupe

BIO257: Australian Biodiversity (43 decks)

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