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Tree and Shrub > Glossary - NATRS 183 & 184 > Flashcards

Glossary - NATRS 183 & 184 Flashcards

1
Q

Acicular

A

Needle shaped and very slender

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2
Q

Acute

A

Leaf base or apex forms an angle of less than 90°

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3
Q

Alternate

A

One leaf per node

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4
Q

Angiosperm

A

A plant producing flowers or bearing ovules(seeds) within an ovary(fruit)

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5
Q

Apex

A

The tip of the leaf

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6
Q

Apophysis

A

The part of the cone scale which is exposed with the cone is closed

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7
Q

Appressed

A

Closely flattened and pressed together

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8
Q

Arcuate

A

Curved into an arch, like a bow

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9
Q

Asymmetrical

A

Not balanced; the parts dissimilar to each other; in equilateral

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10
Q

Awl-like

A

Narrow and sharp-pointed, gradually tapering from the base to slender or stiff point

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11
Q

Axil

A

The acute upper angle formed where a leaf meets stem

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12
Q

Blade

A

The broad part of a leaf or petal

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13
Q

Bract

A

A modified, reduced leaf from the axil of which a flower or flower stem arises. Described in terms of cones.

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14
Q

Broadleaf

A

A tree or plant with wide flat leaves, often deciduous

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15
Q

Compound leaf

A

A leaf comprised of two or more leaflets

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16
Q

Conic

A

In the form of or like a cone

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17
Q

Conifer

A

A cone-bearing plant

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18
Q

Cordate

A

Heart shaped, with a notch at the base

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19
Q

Deciduous

A

Falling - as the annual dropping of the leaves of a non-evergreen tree

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20
Q

Decussate

A

Opposite leaves in four rows up and down the stem, alternating in pairs at right angles

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21
Q

Deltoid

A

Triangular shaped leaf; Shaped like the greek letter delta, or an equilateral triangle

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22
Q

Drendology

A

The scientific study of trees, dendro- relating to trees & ology- the study of

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23
Q

Dichotomous

A

Splitting in to two parts

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24
Q

Dioecious

A

Staminate and pistillate flowers on different plants. One sex to a plant.

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25
Q

Dorsal

A

On the back side relating to the outer surface of a part or organ

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26
Q

Doubly Serrate

A

When the teeth of a serrate leaf are also serrate

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27
Q

Ecological niche

A

A habitat supplying the factors necessary for the existence of an organism or species

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28
Q

Entire

A

Leaf margins that are not toothed, notched, or divided

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29
Q

Erose

A

Said of a margin appearing eroded or gnawed; of a jaggedness too small to be fringed, or too irregular to be toothed

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30
Q

Evergreen

A

having green leaves through winter; not deciduous

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31
Q

Fascicle

A

A condensed or close cluster, as most pine needles

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32
Q

Genera

A

Plural of genus

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33
Q

Genus

A

A category of classification between family and species; a group of structurally or phylogenetically related species

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34
Q

Glabrous

A

Smooth and lacking hairs

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35
Q

Glandular

A

Having or bearing secreting organs or glands

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36
Q

Globose

A

Like a globe or sphere

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37
Q

Gymnosperm

A

Plants producing seeds in cones instead of ovaries (fruit)

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38
Q

Hardwood

A

Angiosperm trees, such as those that are deciduous or broadleaved evergreens

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39
Q

Imbricate

A

Overlapping, as the shingles of a roof

40
Q

Intolerant

A

Unable to grow in the shade of other trees

41
Q

Lanceolate

A

Lance-shaped; much longer than broad, widening above the base and tapering to the apex

42
Q

Leaf scar

A

The point on the twig where the petiole meets the twig

43
Q

Leaflet

A

A division of a compoun leaf, sometimes confused as a leaf

44
Q

Linear

A

Long and narrow, the sides parallel, or nearly so, like the blades of most grasses

45
Q

Margin

A

The edge, as in the edge of a leaf blade

46
Q

Midrib

A

The main rib of a leaf or a leaf-like part; a continuation of the petiole

47
Q

Monoecious

A

Make and female reproduction parts in one plant

48
Q

Node

A

Growing point on a stem where new plant tissue is produced

49
Q

Opposite

A

two leaves per node

50
Q

Ovate

A

Leaf shaped like an egg, widest part below the middle of leaf

51
Q

Ovoid

A

Shaped like an egg (same as ovate but applied to 3D structures like fruit)

52
Q

Peltate

A

Leaf attached to its stalk inside the margin; shield like, facing upwards

53
Q

Palmate

A

Lobed, veined, or divided from a common point, like the fingers of a hand

54
Q

Pendant

A

Drooping, hanging down (same as pendulous)

55
Q

Persistent

A

Remaining attached; not falling off

56
Q

Petiole

A

A leaf stalk

57
Q

Petiolate

A

Having a stalk or petiole

58
Q

Phyllotaxy

A

The arrangement of leaves on a stem

59
Q

Pinnate/ Pinniveined

A

resembling a feather; leaflets or veins branching opposite each other from all elongated axis

60
Q

Pistillate

A

Having pistils and no functional stamens; female

61
Q

Prickle

A

Short, slender, sharp-pointed outgrowth on the bark or epidermis of a plant; resembling a thorn but more easily detached

62
Q

Prostrate

A

Flat upon the ground

63
Q

Pubescent

A

Downy; covered with soft, short hairs

64
Q

Rachis

A

The main axis of a structure, such as compound leaf or an inflorescence

65
Q

Rank

A

The arrangement of leaves on a twig in a vertical row

66
Q

Reflexed

A

Abruptly recurved

67
Q

Resin

A

Solid or semisolid plant secretion, it is an amorphous. Fusible, flammable, natural organic substance, usually translucent; especially in Pinaceae

68
Q

Resin blisters

A

Pockets in the bark of a tree which are filled with resin

69
Q

Serotinous

A

Developing late. Usually refers to flowers. Also refers to cones which open after a long period of time to release the seeds

70
Q

Serrate

A

Said of a leaf margin when saw toothed, with the teeth pointing forward

71
Q

Sessile

A

Not stalked

72
Q

Shrub

A

A woody plant with several stems, that is shorter than a typical tree

73
Q

Simple

A

Said of a leaf not compounded into leaflets; of an inflorescence when not branched

74
Q

Softwood

A

A term used to reference gymnosperm trees, such as conifers; opposite of hardwood

75
Q

Species

A

A category of classification lower than a genus or subgenus and above a subspecies or variety; a group of animals or plants which possess in common one of more distinctive characters

76
Q

Spine

A

Stiff, slender, sharp pointed structure arising from below the epidermis, representing a modified leaf or stipule

77
Q

Spinose

A

Bearing spines

78
Q

Spur shoots

A

Tubular, compact projections from a twig with little or no intermodal development

79
Q

Staminate

A

Male; having stamens and not pistils

80
Q

Stipe

A

Plural of stoma

81
Q

Stoma

A

Minute opening in the surface of a leaf or stem for the purpose of gas exchange between leaf and atmosphere

82
Q

Stipule

A

Small leaf-like appendage to a leaf, typically borne in pairs at the base of the leaf stalk

83
Q

Stomatal bloom

A

A whitish bloom which surrounds the stomata on certain leaves

84
Q

Strobilus

A

The cone of pine, fir, or other conifer

85
Q

Strobili

A

Plural of strobilus

86
Q

Subglobose

A

Somewhat globular, spherical

87
Q

Subterminal

A

Below the tip or distant end

88
Q

Terminal

A

At the tip or distant end

89
Q

Ternate

90
Q

Thorn

A

Stiff, woody, modified stem with a sharp point

91
Q

Tolerant

A

Said of a plant able to grow under shaded conditions

92
Q

Tomentos

A

With a covering of short, matted, or tangled, soft, wooly hair

93
Q

Tree

A

A large woody plant, usually with a single main stem or trunk

94
Q

Umbo

A

A conical projection arising from the surface, a small scar on the apophysis of a cone scale

95
Q

Ventral

A

Front; opposite of the back or dorsal part. In pine needles, inner as opposed to outer

96
Q

Whorled

A

Three or more leaves or flowers at one node, in a circle

97
Q

Glaucus

A

Plant part covered in stomata bloom

Tree and Shrub (4 decks)

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