Presentation on theme: "SAFE HANDS Leaf (Phyllopodium) Dorsiventral Dicot Isobilateral Monocot Types of leaves Cotyledonary – fleshy due to food Hypsophylls or Bract leaves-"— Presentation transcript:
SAFE HANDS Leaf (Phyllopodium) Dorsiventral Dicot Isobilateral Monocot Types of leaves Cotyledonary – fleshy due to food Hypsophylls or Bract leaves- contain inflorescence at axil. Scaly- Non green or dry – bamboo. Prophylls –the first form leaves. Cataphylls – non green underground scaly protect but in axil. Sporophyll- reproductive. Represent flower. Foliage leaves – Photosynthetic.
SAFE HANDS Part of leaves Leaf base Lamina Petiole Margin Apex Axillary bud
SAFE HANDS Stipules Types according to their time period- Caducous- detach before the leaf unfolds- Michelia(Champa) Deciduous- detach after unfold of leaf- cassia Persistent – attached permanently - Hibiscus. Types according to their structure and location - Free lateral – two free stipules on both side of leaf base- Hib. Adnate – two lateral attached to petiole -rose Ochreate – two form hollow tube surrounds node. Interpetiolar – Between petioles of opposite leaves- Anthocephalalus Intrapetiolar – between petiole and stem. Foliaceous – two green leaf like. Tendrilar- modified into thin tendrils – Smilax Bud and spiny
SAFE HANDS Lamina (epipodium) Parallel Monocot Reticular Dicot Venation Convergent Wheat Divergent Palms Unicostate/Pinnat e Peepal Multicostat e\Palmat e Convergent Ber Divergent Castor
SAFE HANDS Furcate
Vernation & ptyxis Vernation- arrangement in relation to each other in the bud condition Ptyxis – manner of folding of an individual leaf in bud condition Circinatie- rolled from apex to base- cycas. Plicate – folded lengthwise – fan palm Conduplicate – folded over midrib – gauva Crumpled- irregularly folded – cabbage Involute – margin folded on upper side- colocasia rovolute – Margins rolled on lower surface Phyllotaxy & its types Modification
SAFE HANDS Types of Leaves (Depends of incision of lamina) SimpleCompound Pinnately compd- Incision toward midrib Palmately compd- Incision of lamina toward the base of leaf connect to the tip of petiole Unipinnate- Pari- Imparipinnate Bipinnate-Tripinnate-Decompound
SAFE HANDS Palmately compd- Incision of lamina toward the base of leaf connect to the tip of petiole Unifoliate- citrus Bifoliate Bignonia Trifoliate Oxalis Quadrifoliate Paris quadrifolia Multifoliate Bambax
SAFE HANDS Peduncle (Floral axis) Simple (Unbranched) – flowers born on rachis Compound (Branched) - flowers born on rachises Solitary single - Hibiscus Inflorescence may be – Terminal- single flower at the apex Axillary – flower in the axil of a leaf Intercalary – single flower between the floral axis
SAFE HANDS Axillary Racemos e Indefinite Cymose Definite MixedSpecial
SAFE HANDS Racemose (Indefinite) Indefinite axis Flowers in a acropetal order. Opening of flower is centripetal. Peduncle Unbranched -Simple recemose. Peduncle Branched – compound recemose.
SAFE HANDS Types of Racemose inflorescence Main axis elongated Raceme Spike. Spikelets. Catkin. Spadix. Main axis shortened Corymb. Umbel Main axis flat Concave Convex