Question

What is a stipule of a leaf ?​

Answer 1

Answer:

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stipule (Latin stipula: straw, stalk) is a term coined by Linnaeus which refers to outgrowths borne on either side (sometimes just one side) of the base of a leafstalk (the petiole).

Answer 2

Stipules:- It is the lateral appendages on either side of a leal base present in some plants.

Those leaves which have stipule is called as stipulate leaf.

Example- Fabaceae

And those which do not have stipule is known as ex-stipulate leaf.

Example- Liliaceae

Stipules are of various types:-

1. Free lateral:- Those base in which stipules are present freely on both sides. eg- Hibiscus rosasinensis (China rose).

2. Tendrillar:- Those stipules which have structure like tendrils. eg- Smilax.

3. Spiny:- Those which have structure like spine. eg- Zizyphus (Ber).

4. Foliaceous:- Leaf like structure stipules. eg- Pea.

5. Ochreate:- When due to combination of two stipules a tube like structure is formed then it is known as ochreate. eg- Polygonum.

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