Studies for some flowering plant families mentioned in course
Zygophyllaceae Chenopodiaceae Amaranthaceae Mimosaceae Aizoaceae
Cactaceae Boraginaceae Urticaceae
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Family:Urticaceae Habit:The Urticaceae are monoecious or
dioecious herbs or infrequently shrubs or small trees,often with
specialized stinging hairs. The leaves : alternate or opposite,
simple, Flower: minute, unisexual or bisexual The Perianth :mostly
4 or 5 undifferentiated tepals or is sometimes absent. The male
flowers have a stamen opposite each perianth segment. The female
flowers have a single simple pistil with a superior or inferior
ovary that contains one basal ovule in its solitary locule..
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Family Chenopodiaceae Habit: Mostly halophytic Herbs Leaves:
Simple alternate or opposite, leaves succulent in some species
Flower: Minute,green, bracteate, Actinomorphic,pentamerous,
hypogynous, monochlamydeous Perianth: five sepaloids, Androecium:
five Stamens Gynoecium:2 united carpels, unilocular
ovary,uniovule,basal placentation
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Family :Amaranthaceae Herbs, rarely woody, with dense or
congested inflorescences bearing minute flowers subtended by dry,
scarious, papery bracts, and basally united stamens
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Family:Zygophyllaceae Habit:Mostly herbs and shrubs Leaves:
leaves opposite,compound pinnate,simple Flower:
Bisexual,pentamerous, actinomorphic or zygomorphic Androecium:10
stamens obdiplostemonous Gynoecium:5 united carpels,axile
placentation Fruit:Capsule.
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Family:Cactaceae Succulent herbs typically with spines arranged
in areoles, large solitary flowers, numerous parts and an inferior
ovary
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Family :Aizoceae Habit and leaf form. Plants
succulent,Xerophytic, herbs annual, or perennial; with a basal
aggregation of leaves, or without conspicuous aggregations of
leaves. Leaves minute to medium-sized; alternate, or opposite.
Perianth :sepaline, or with distinct calyx and corolla. Androecium
:3to many, free of one another, or coherent. Androecium including
numerous staminodes Gynoecium (1-20) carpels. Placentation when
unilocular become parietal; when plurilocular, axile Fruit fleshy
or non-fleshy; dehiscent, or indehiscent; a capsule, or a
berry..
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Key to the families of the Leguminosae: 1. Flowers
actinomorphic .Mimosaceae 1. Flowers zygomorphic....2 2. Perianth
showing some connation, the uppermost petal (standard) enclosing
the lateral petals (wings)Fabaceae 2. Perianth with separate parts,
the standard enclosed by the wingsCaesalpiniaceae
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Family:Papilionaceae Habit: Some of the plants are herbs or
shrubs Leaves: Leaves are simple or compound
imparipinnate,alternate,stipulate Flower:Flowers are bisexual,
zygomorphic, perigynous, pentamerous Corolla: Five petals,
Papilionaceous-posterior petal form standard, 2 lateral petals form
wings and two lower petals form keel
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Cont. Androecium: the androecium consists of ten stamens which
are didelphous having 9stamens united into a bundle and the tenth
one in a free condition Gynoecium: consists of single carple,ovary
unilocular. several ovules are arranged in marginal placentation
Fruit: It is a small legume which is straight or twisted some
fruits are lomentum
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Mimosaceae Habit: Mostly herbs, shrubs(Accacia)and trees
Leaves:Leaves alternate and bipinnate Flower: actinomorphic,
sometimes tetramerous or pentamerous,bisexual,perigynous
Androecium: 10 many free stamens Gynoecium: one carpel, unilocular
ovary, many ovules arranged in marginal placentation Fruit : Legume
or Lomentum
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Ceasalpinaceae Habit:Mostly shrubs or trees Leaves:
Aternate,parpinnate Flower:Bisexual,perigynous,pentamerous
Androecium: Ten stamens,free, usually variable in size, arranged in
two whorls of 5 each, some may be reduced to staminodes as in
Cassia sp. Fruit:Legume
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Distinguishing characters of Boraginaceae Plant is provided
with hairs bristly and erect hairs. Inflorescence is a helicoid or
scorpioid cymose, one sided Flower:
Pentamerous,hypogynous,bisexual,actinomorphic Corolla tube often
with infoldings or scales (corona). Fruit is a schizocarp splitting
into 4 nutlets.