Floral Formula of Solanaceae

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Let us first learn the definition of floral formula and its importance, before we write down the floral formula of the Solanaceae family. Here, we will also discuss the features, importance, and position of the Solanaceae family. The representation of the structure of a flower using numbers, letters, and symbols is called its floral formula. The floral formula represents the floral symmetry, ovary position, number of parts, insertion, connation, and adnation of a flower.

Floral Formula of Solanaceae Family

Solanaceae or nightshades belong to the family of flowering plants. Solanaceae is also called a potato family. It consists of 98 genera and 2500 species. The plants can take the form of vians, lianas, herbs, shrubs, trees, and sometimes epiphytes. It includes crops, medicinal plants, ornamentals, spices, and weeds. Examples: Pepper, potato, tomato, eggplant, and so on.

To write the floral formula of Solanaceae the following are the symbols used.

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The Solanaceae family floral formula is 

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Floral Diagram of Solanaceae

The floral diagram of the Solanaceae family is as follows.

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Scientific Classification:

Kingdom: Plantae

Subkingdom: Tracheobionta

Super Division: Spermatophyta

Division: Magnoliophyta

Class: Magnoliopsida

Subclass: Asteridae

Order: Solanales

Family: Solanaceae

Features of Solanaceae Family

  • The flowers are actinomorphic, bracteate, and generally hermaphrodites.

  • The members of the family exhibit entomophilous pollination.

  • Terminal, cymose or axillary form of an inflorescence is found.

  • They possess a tap root system with branching.

  • The leaves are alternate and they have reticulate venation.

  • It has differentiated perianth with a corolla and calyx with five petals and five sepals respectively.

  • It has a gynoecium formed from two carpels with a superior ovary and an androecium with five stamens.

  • Epipetalous kinds of stamens are present.

  • The ovules are generally inverted.

  • The number of locules present in the ovary is the same as that of the carpels.

  • The fruits produced are berries or capsules.

The above discussion on the floral formula of the Solanaceae family and its features are important as well as interesting to learn. There is an economic importance of the Solanaceae family. A variety of plant species are grown as ornamental plants. It has important food species such as, potato, tomato, pepper, and eggplant. It contains alkaloids - these are nitrogenous substances. It can be toxic for animals even at low doses. Some of the main types of alkaloids include solanine, tropanes, nicotine, and capsaicin.

FAQ (Frequently Asked Questions)

1. What Do Symbols in the Floral Formula Indicate?

Answer: The floral formula consists of five symbols and it is denoted from left to right:

  • Floral symmetry

  • Number of sepals

  • Number of petals

  • Number of stamens

  • Number of carpels

2. Write Down the Floral Formula of Solanaceae.


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