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Convolvulaceae

life science Maturity 11-13 Next article →

The Convolvulaceae family is a vast and diverse group of flowering plants.

Jacquemontia paniculata W IMG 2929
Jacquemontia paniculata W IMG 2929

It includes about 60 different genera and more than 1,650 distinct species. Most members of this family are herbaceous vines, which are soft-stemmed plants that climb. However, the family is not limited to vines. It also contains shrubs, small herbs, and even medium-sized trees like *Humbertia madagascariensis*.

Convolvulus Cephalopodus in Behbahan, Iran (1)
Convolvulus Cephalopodus in Behbahan, Iran (1)

These plants are important to humans for many reasons. They provide colorful flowers for gardens, food for people, and even medicinal ingredients.

You can identify a member of the Convolvulaceae family by looking closely at its flowers. The flowers feature a funnel-shaped corolla, which is the part made of petals. This corolla is radially symmetrical, meaning it looks the same from all sides. The floral structure follows a specific pattern. It has five sepals at the base and five petals that are fused together. Inside the flower, there are five epipetalous stamens. This means the stamens, the male parts, are physically attached to the petals. The female part, called the gynoecium, is a two-part syncarpous and superior structure.

The growth habit of these plants is also very distinctive. The stems are usually winding or twisting as they grow. This characteristic is why the family has the Latin name Convolvulaceae. The name comes from the word *convolvere*, which means "to wind."

Ss996sd9
Ss996sd9

Most species have simple, alternate leaves that do not have stipules. However, some members have changed how they grow. In the parasitic genus *Cuscuta*, also known as dodder, the leaves are reduced to tiny scales. This happens because the plant relies on other hosts for survival.

Some members of this family have fascinating chemical properties. Certain species contain ergoline alkaloids. These are special chemical compounds that can have strong effects on the body. Scientists believe these chemicals are not made by the plant alone. Instead, they likely come from a symbiosis, which is a close partnership between two different organisms. In this case, the plant lives with a fungus from the family Clavicipitaceae.

EB1911 Convolvulus sepium
EB1911 Convolvulus sepium

A recent study of the plant *Ipomoea asarifolia* confirmed this relationship. Researchers used DNA sequencing of 18s and ITS ribosomal DNA to identify the fungus. They found the fungus is an obligate biotroph, meaning it must live on its host. It is also seed-transmitted, passing from parent to offspring through the seeds.

Another group of chemicals called loline alkaloids has been found in some species. These are often produced by fungi in the genus *Neotyphodium*. While researchers know these alkaloids exist in some convolvulaceous plants, the exact origin in those specific species is still unknown. These chemical studies help us understand the complex ways plants and fungi interact in nature. This relationship shows how a single plant can be part of a much larger biological system.

Humans use many species in the Convolvulaceae family for daily needs. The sweet potato is perhaps the most famous example. It is an edible tuber, which is a thickened underground part of a stem. Water spinach is another common food plant. Beyond food, some species are used for their medicinal value. For instance, some seeds are used as purgatives, which are substances that help clear the bowels. However, some species must be handled with care because of their potent alkaloid content.

In many environments, these plants are known by different names depending on how they are used. In a beautiful garden, you might see the showy flowers of a morning glory.

Jacquemontia paniculata W IMG 2929
Jacquemontia paniculata W IMG 2929

In a field or a yard, you might encounter bindweed, which is often considered a troublesome weed. Genera like *Convolvulus* and *Calystegia* are common examples of these weeds. Whether they are being grown for food, decoration, or managed as weeds, the Convolvulaceae family remains a vital part of the Earth's botanical landscape.

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🖼️ Images & Media (4)
File:Jacquemontia paniculata W IMG 2929.jpg
Jacquemontia paniculata W IMG 2929.jpg
File:Convolvulus Cephalopodus in Behbahan, Iran (1).jpg
Convolvulus Cephalopodus in Behbahan, Iran (1).jpg
File:Ss996sd9.jpg
Ss996sd9.jpg
File:EB1911 Convolvulus sepium.jpg
EB1911 Convolvulus sepium.jpg
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