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Botanical Terminology Flashcards

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1
Q

a-

A

prefix meaning without or not

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2
Q

abaxial

A

a surface that faces away from the axis of the structure to which it is attached.

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3
Q

aberrant

A

atypical

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4
Q

abortive

A

Defective, barren, or undeveloped.

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5
Q

abrupt

A

Sudden, not gradual. e.g abruptly acuminate

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6
Q

abscission

A

The disconnection of a leaf, flower, fruit, or other plant part, usually forming a scar.

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7
Q

acaulescent

A

Stemless or apparently so.

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8
Q

accrescent

A

Increasing in size after flowering, most commonly in reference to the calyx. e.g.- accrescent calyx

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9
Q

achene

A

A hard, 1-seeded, indehiscent nutlet with a tight pericarp.

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10
Q

acicular

A

Needle-like.

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11
Q

actinomorphic

A

Radially symmetrical; capable of being bisected into two or more similar planes.

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12
Q

acuminate

A

Tapering with incurved marginal lines to a slender tip.

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13
Q

acute

A

Tapering with straight marginal lines to a sharp tip.

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14
Q

adaxial

A

Said of a surface that faces toward the axis of the structure to which it is attached.

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15
Q

adherent

A

Joined to a dissimilar plant tissue. Compare with coherent.

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16
Q

admixed

A

Blended

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17
Q

adnate

A

Born together.

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18
Q

adpressed

A

Lying close to but separate from another tissue or organ.

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19
Q

adventitious

A

Sprouting or growing from unusual places, such as roots that originate from a stem, or buds that
associate with wounds.

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20
Q

adventive

A

Not native, introduced.

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21
Q

aerial

A

Said of structures that originate above the ground.

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22
Q

aggregated

A

Crowded together.

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23
Q

alate

A

Winged

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24
Q

Alfisol

A

A taxonomic order of soils, usually forest-developed, that lacks the organic matter and productivity of a richer soil, such as a Mollisol, and possesses a leached horizon and subtending zone of accumulated clay.

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25
alkaline
Having a pH higher than 7.0
26
acidic
Having a pH lower than 6.0
27
allochthonous
Not indigenous.
28
alluvium
Sand, silt, and other particles deposited by moving water.
29
alternate
One after the other along an axis, not opposite.
30
alveolate
Like a honeycomb; with angular cavities separated by partitions.
31
ament
A dry, usually elongate, often pendulous, scaly spike that bears imperfect flowers; a catkin.
32
amentiferous
Bearing aments
33
amplexicaule
Clasping the stem, culm, or similar axis.
34
anastomose
To interconnect, such as the veins of a leaf.
35
androecium
The portion of the flower that bears the stamens.
36
androgynous
With staminate flowers situated above the pistillate ones in the same inflorescence. Compare with gynecandrous.
37
anemophilous
Pollinated by wind.
38
angled
having angles, usually along a stem or petiole.
39
angiosperm
A flowering plant that produces seeds enclosed in a structure derived from the ovary.
40
angulate
Having angles.
41
annual
Plant that completes its life cycle in one year or less.
42
annulus
Tissue that forms a ring or is arranged in a circle.
43
antepetalous
With stamens opposite the petals.
44
anterior
positioned away from the stem or axis.
45
antesepalous
With stamens opposite the sepals.
46
anther
Pollen-bearing portion of the stamen.
47
antherode
A sterile anther.
48
anthesis
Time of flowering during which the anthers dehisce and the stigmas are receptive to pollen.
49
antrorse
Directed forward or distally.
50
apetalous
Without petals.
51
apex
Tip, end.
52
apical
Pertaining to the apex.
53
apiculate
Abruptly short-pointed.
54
apiculus
A short point or minute beak.
55
appendage
An attached, often evidently functionless vegetative process.
56
appressed
Lying flat against a surface.
57
aquatic
Living out the life cycle in water.
58
arachnoid
Like a cobweb.
59
arboreal
Tree-like or pertaining to a tree.
60
arborescent
Becoming tree-like.
61
arcuate
Arching, bowed, often referring to venation
62
areola
Space between the veins of a leaf or some similar structure.
63
aril
An appendage that grows out from a seed.
64
arillate
Having an aril.
65
aristate
Tipped by a stiff bristle; awned.
66
armed
Bearing barbs, prickles, spines, or thorns.
67
aromatic
Having a discernible odor; fragrant.
68
array
With respect to the Asteraceae, the disposition of the heads, usually evocative of a corymb, cyme, or panicle.
69
article
A section of a leguminous fruit separated from other sections by a constriction or partition.
70
articulation
A joint.
71
ascending
Growing or directed in an upward direction, or at least tending to do so.
72
asexual
Applied to reproduction without the involvement of a zygote.
73
asymmetrical
Unequally developed on either side of an axis.
74
atom
Small, usually resinous dot or gland.
75
atomiferous
Bearing atoms.
76
attenuate
Gradually tapered to a slender tip, commonly with the base of leaves
77
atypical
Varying from the usual.
78
auricle
Ear-shaped appendage or lobe, seen at the base of the leaf blade in grasses
79
auriculate
Bearing an auricle.
80
autogamy
Self-fertilization.
81
autumnal
Appearing or flowering in fall.
82
awn
A stiff bristle, usually situated at the tip of a leaf or perianth segment; in grasses, at or near the tip of a glume or lemma.
83
axil
The area or angle formed between the base of an organ and the structure from which it originated, commonly where buds, branchlets, or flower stalks are borne.
84
axile
Positioned along the central axis of an ovary that has two or more locules.
85
axillary
Pertaining to an axil.
86
axillary bud
Bud arising from an axil.
87
axis
The central part of a longitudinal support, commonly of a stem or inflorescence, on which organs or parts are arranged.

Botany (2 decks)

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