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Catharanthus roseus (Shailee Vaishnav)
Updated on 25/04/2021

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Description

The photo 1 shows the salverform corolla of Catharanthus roseus / Periwinkle of Apocynaceae. The 5 petals are fused into a tube, the corolla tube. In photo 2, the 5 unfused sepals are shown which are at the end of the corolla tube. Photo 3 is the picture of the two nectary glands that are present. The five stamens are shown in picture 4 which are arranged in (3+2) form and are epipetalous. An example of adnation. Picture 5 and 6 show the two distinct unicarpellate ovaries. The sepals and petals are placed alternatively and it is actinomorphic and bisexual.

It exudes white latex when injured which is called being laticiferous. All the parts are toxic in this flower.

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SC392

Comments

Nice arrangement of photos! Good effort in recording your observation.

A side view may be better to show 'salverform corolla'.

'Photo 3 is the picture of the two nectary glands that are present.': not sure where are the glands...

by Cherry_Chow (Teacher) at 2021-05-04 17:23:27

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salverform corolla, petals

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5 sepals

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epipetalous stamens (3+2)

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distinct unicarpellate ovaries

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distinct

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corolla tube

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nectary gland

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corolla tube

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petal , sepal , pileus , suspensor , stipe , Labellum , columella , sporangium , pistil , zygosporangium

Catharanthus roseus (Shailee Vaishnav) Updated on 25/04/2021

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Catharanthus roseus (Shailee Vaishnav)
Updated on 25/04/2021