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plant parts

vocab for learning plant partd

100 cards·by Arscarvi
plants
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bract
a modified,reduced leaf from the axil of which a flower or flower stem arises. Normally used in conjunction with cones in forestry
imperfect
in flowrs, lacking either male or female sex organs.
gloucous
covered with a "bloom" or whitish substance that wipes off
leaf scar
the point on the twig where the petiole meerts the twig.
entire
with a continuous margin, not notched, toothed or lobed
catkin
another name for ament.
bloom
a fine, whitsh, powdery or waxy covering on the surface of leaves,stems or fruit
pome
a fleshy indehiscent fruit in wich the inner wall surrounding the seeds is cartilaginous or papery and the outer wall is fleshy. pears
seed
the ripened ovule,the essential part of whuch is the embryo
stipule
small modified leaves occuring at the base of some petioles. Blade and petiole form a complete leaf.
ovate
egg-shaped
drupe
a fleshy one-seeded indehiscent fruit with the seed enclosed in a stoney inner wall surrounded by a fleshy outer wall. i.e. cherry, plum
truncate
as though abruptly cut off, forming an angle of about 180 degrees
stomata
minute openings in the surface of leaves through which gas exchange takes place with the atmosphere
pith
the central soft tissue of a stem. may be solid, soft, chambered or hollow.
capsule
a dry dehiscent fruit that splits longitudinally along two or more sides at maturity. ie fruit of the pacific rhododendron
incomplete
in flowers,lacking any of the 4 principal flower parts-sepals,petals,pistils,or stamens
internode
the part of the stem between leaf nodes. In conifers foresters often use the term to refer to a single years growth of the twig or main bole
rachis
that portion of the axis of a compound leaf from the lowest pair of leaflets upwards
dichotomous
splitting into two parts at each junction or node
node
a joint where a leaf is borne or may be borne.
nut
a dry indehiscent, fruit containing a single seed
alternate
any arrangement of leaves or other parts not opposite or whorled; placed singly at different heights on the axis or stem
ament
a spike-like inflorescence in which individual flowers have short or no stalks; flowers are unisexual.
strobile
a cone-like inflorescence with imbricated bracts or scales
staminate
male with stamens, but no functional pistil
phyllotaxy
the arrangement of leaves on their axis, expressed numerically by a fraction.
phyllotaxy fractions numerator
represents the number of revolutions of a spiral made in passing from one leaf past each successive leaf to the leaf above the initial leaf
phyllotaxy fractions denominator
the number of leaves passed in the spiral denoted in the numerator
branchlets
the ultimate division of a branch; the current years growth; a twig
bud
growing structure at the side or tip of a stem or branch containing young leaves, flowers, or both
fascicle
a bundle or closed cluster, normally enclosed in a paper sheath, as with pine needles
achene
a small dry, one seeded fruit which does not split at maturity; may or may not have a feathery tail
naked
not covered by special scales
glandular
bearing glands, small cellular organs, secretining oils, tars, resins etc. May occur on leaves, stems, or fruits.
deltoid
triangular,delta-like
terminal
at the tip or distant end
sessile
not stalked
rank
a numerical term used to describe the arrangement of leaves on a twig. the denominator is the phyllotaxic fraction.
appressed
closely and flatly pressed against
compound
having two or more similiar parts in one organ; may apply to leaves, flowers, or fruit
dentate
with sharp, rather coarse indentations or teeth that are perpendicular to the margin
armed
an adjective denoting any covering of thorns, spines, spikes, barbs, or prickles; may occur on leaves, stems or fruit
palmate
lobed,divided, or ribbed in a hand-like fashion; digitate
lenticel
corky growth on young bark, shaped like a double convex lens; covered with aeration
fruit
the ripening ovary with enclosed seeds and other adnate parts; the seed-bearing organ of the plant
thorn
a pointed branch, usually strong and stout, not pulling of the bark
shrub
a woody plant that remains low and produces many shoots or trunks from the base
recurved
bent or curved downward or backward
acicular
needle like-descriptive of the foliage of pine trees
cone
a dry, multiple fruit generally consisting of overlapping scales of a woody or semi-woody nature
corolla
the complete set of petals on a flower; usually colored other than green, directly above the calyx
asymmetrical
not balances; the parts dissimilar to each other; inequilateral mostly used to describe the bases of leaves or cones
penniveined
veined in a pinnate manner refers only to veins
lobed
technically, it means indented less than hlaf way to the midrib. more commonly it's used to mean moderately to deeply indented
furrowed bark
having longitudinal channels or grooves
indehiscent
remaining closed; not splitting open at maturity; nut, achene and samara are three examples
leaflet
a single blade of a compound leaf
peltate
in leaves the petiole attached at or near the center of the lower surface of the blade. In cone-scale, when the attachment is at the under
tomentose
a special type of pubescence; covered with dense wooly hairs
simple leaves
a leaf that is not compound into leaflets or of an inflorescence that is not branched. not divided
resin
a sticky secretion exuding from certain plants and trees
adnate
unlike parts which are fused together
conifer
a cone bearing plant
crenate
with obtuse or rounded broad teeth that may be directed forward or at right angles to the midvein; scalloped
persistent
reamining attached longer than might be expected
midrib
the mainrib of a leaf or leaf-like part; a continuation of the petiole
involucre
a whorl or rosette of bracts surrounding an inflorescence, sometimes becoming a husk around mature fruit.
glabrous
smooth; not hairy
berry
pulpy, indehiscent, few-or many-seeded fruit resulting from a simple pistil. the seeds are embedded wholly inside the fruit
whorled
three or more flowers or leaves at a node
serrate
a saw-toothed leaf margin, with the teeth pointing forward
pubescent
covered with short, soft hairs; downy
arcuate
curved or bowed
chambered
having the appearance of"rooms" or cells
emarginate
the apex markedly notched but not lobed
opposite
two at a node; on opposing sides of an axis. may refer to leaves, flowers, fruit, branches, etc.
legume
a dry. dehiscent fruit containing several seeds and splitting along 2 lines of dehiscence at maturity. only occurs in the pea family.
linear
narrow and flat with nearly parallel sides. ex. fir needles.
exfoliating bark
peeling off in shreds, thin layers, or plates, as bark from the trunk of a tree
aril
a fruit in which a fleshy outer covering grows from the seed from the point where the seed attaches to the stem. the fruit of pacific yew
spur shoot
a compact woody twig with little or no internodal developement
samara
a dry indehiscent winged fruit, consisting of one seed. may be single as in ashes or compound as in the maples
pinnate
feather-formed, with the parts placed on opposite sides of a central axis in one plane.
clone
the offspring of a plant that reproduced vegetatively (asexually) rather than sexually genetically identical to a single parent.
bundle scar
scars of the leaf veins where they become detached from the stem
follicle
a dry dehiscent fruit containing one to many seeds, but splitting down one line of dehiscence. the fruit of ninebark
netted
with veins forming a network
imbricated
overlapping, as the shingles on a roof. generally used to describe bud scales
pistillate
female; having one or more pistils and no functional stamen
dioecious
having male 9staminate) and female (pistillate) flowers on different plants
acorn
a nut with a cup-like involucre around the base; a dry, indehiscent, one seeded fruit. oak trees have this kind of fruit.
tree
a woody plant that produces one main trunk and more or less distinct elevated head
spine
a leaf that has been modified or reduced to a sharp pointed, rigid, deep seated spike
revolute
rolled under, with margin rolled toward lower side. used particularly to describe leaf margins
apophysis
the exposed part of a cone scale when a cone is closed
deciduous
falling off at the end of growing season
decussate
a type of leaf arrangement in which opposite leaves occur in pairs with each pair alternating at right angles to the one above and below
monoecious
having staminate ( male) and pistillate (female) flowers on the same plant
petiole
leaf stalk