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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
Dorsal
On the back side relating to the outer surface of a part or organ
26
Doubly Serrate
When the teeth of a serrate leaf are also serrate
27
Ecological niche
A habitat supplying the factors necessary for the existence of an organism or species
28
Entire
Leaf margins that are not toothed, notched, or divided
29
Erose
Said of a margin appearing eroded or gnawed; of a jaggedness too small to be fringed, or too irregular to be toothed
30
Evergreen
having green leaves through winter; not deciduous
31
Fascicle
A condensed or close cluster, as most pine needles
32
Genera
Plural of genus
33
Genus
A category of classification between family and species; a group of structurally or phylogenetically related species
34
Glabrous
Smooth and lacking hairs
35
Glandular
Having or bearing secreting organs or glands
36
Globose
Like a globe or sphere
37
Gymnosperm
Plants producing seeds in cones instead of ovaries (fruit)
38
Hardwood
Angiosperm trees, such as those that are deciduous or broadleaved evergreens
39
Imbricate
Overlapping, as the shingles of a roof
40
Intolerant
Unable to grow in the shade of other trees
41
Lanceolate
Lance-shaped; much longer than broad, widening above the base and tapering to the apex
42
Leaf scar
The point on the twig where the petiole meets the twig
43
Leaflet
A division of a compoun leaf, sometimes confused as a leaf
44
Linear
Long and narrow, the sides parallel, or nearly so, like the blades of most grasses
45
Margin
The edge, as in the edge of a leaf blade
46
Midrib
The main rib of a leaf or a leaf-like part; a continuation of the petiole
47
Monoecious
Make and female reproduction parts in one plant
48
Node
Growing point on a stem where new plant tissue is produced
49
Opposite
two leaves per node
50
Ovate
Leaf shaped like an egg, widest part below the middle of leaf
51
Ovoid
Shaped like an egg (same as ovate but applied to 3D structures like fruit)
52
Peltate
Leaf attached to its stalk inside the margin; shield like, facing upwards
53
Palmate
Lobed, veined, or divided from a common point, like the fingers of a hand
54
Pendant
Drooping, hanging down (same as pendulous)
55
Persistent
Remaining attached; not falling off
56
Petiole
A leaf stalk
57
Petiolate
Having a stalk or petiole
58
Phyllotaxy
The arrangement of leaves on a stem
59
Pinnate/ Pinniveined
resembling a feather; leaflets or veins branching opposite each other from all elongated axis
60
Pistillate
Having pistils and no functional stamens; female
61
Prickle
Short, slender, sharp-pointed outgrowth on the bark or epidermis of a plant; resembling a thorn but more easily detached
62
Prostrate
Flat upon the ground
63
Pubescent
Downy; covered with soft, short hairs
64
Rachis
The main axis of a structure, such as compound leaf or an inflorescence
65
Rank
The arrangement of leaves on a twig in a vertical row
66
Reflexed
Abruptly recurved
67
Resin
Solid or semisolid plant secretion, it is an amorphous. Fusible, flammable, natural organic substance, usually translucent; especially in Pinaceae
68
Resin blisters
Pockets in the bark of a tree which are filled with resin
69
Serotinous
Developing late. Usually refers to flowers. Also refers to cones which open after a long period of time to release the seeds
70
Serrate
Said of a leaf margin when saw toothed, with the teeth pointing forward
71
Sessile
Not stalked
72
Shrub
A woody plant with several stems, that is shorter than a typical tree
73
Simple
Said of a leaf not compounded into leaflets; of an inflorescence when not branched
74
Softwood
A term used to reference gymnosperm trees, such as conifers; opposite of hardwood
75
Species
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
Spine
Stiff, slender, sharp pointed structure arising from below the epidermis, representing a modified leaf or stipule
77
Spinose
Bearing spines
78
Spur shoots
Tubular, compact projections from a twig with little or no intermodal development
79
Staminate
Male; having stamens and not pistils
80
Stipe
Plural of stoma
81
Stoma
Minute opening in the surface of a leaf or stem for the purpose of gas exchange between leaf and atmosphere
82
Stipule
Small leaf-like appendage to a leaf, typically borne in pairs at the base of the leaf stalk
83
Stomatal bloom
A whitish bloom which surrounds the stomata on certain leaves
84
Strobilus
The cone of pine, fir, or other conifer
85
Strobili
Plural of strobilus
86
Subglobose
Somewhat globular, spherical
87
Subterminal
Below the tip or distant end
88
Terminal
At the tip or distant end
89
Ternate
In threes
90
Thorn
Stiff, woody, modified stem with a sharp point
91
Tolerant
Said of a plant able to grow under shaded conditions
92
Tomentos
With a covering of short, matted, or tangled, soft, wooly hair
93
Tree
A large woody plant, usually with a single main stem or trunk
94
Umbo
A conical projection arising from the surface, a small scar on the apophysis of a cone scale
95
Ventral
Front; opposite of the back or dorsal part. In pine needles, inner as opposed to outer
96
Whorled
Three or more leaves or flowers at one node, in a circle
97
Glaucus
Plant part covered in stomata bloom

Tree and Shrub (4 decks)

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