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Gladiolus

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The *Gladiolus* is a genus of perennial cormous flowering plants. These plants belong to the Iridaceae family, which is the iris family. They are often called "sword lilies" due to their unique leaf shape.

Gladiolus Italicus, Behbahan
Gladiolus Italicus, Behbahan

This genus is found across several continents. You can find them in Asia and Mediterranean Europe. They also grow in South Africa and tropical Africa. The center of their diversity is located in the Cape Floristic Region.

Each *Gladiolus* plant grows from a specialized underground structure. This structure is a corm, which is a round, symmetrical stem.

Gladiolus Italicus Bulbs, Behbahan, Iran
Gladiolus Italicus Bulbs, Behbahan, Iran

The corm is protected by several layers of brownish, fibrous tunics. From this corm, a stem emerges that is generally unbranched. The plant produces between one and nine narrow leaves. These leaves are sword-shaped and have longitudinal grooves. The lowest leaf is often shortened into a structure called a cataphyll.

The leaves of the *Gladiolus* possess a fascinating biological mechanism. The surfaces of the leaves feature micro-striations with aligned micro-protrusions. These structures are coated with waxy nano-flakes. This three-level surface structure creates a property called anisotropic superhydrophobicity. This scientific term means the leaf can shed rainfall droplets in a specific, one-way direction. This mechanism helps the plant manage water on its surface efficiently.

The flowers of the *Gladiolus* are highly complex in their anatomy. They grow on inflorescences, which are clusters of flowers on a single spike. These spikes are typically large and one-sided. Each flower is bisexual and is supported by two leathery, green bracts. Because the sepals and petals look almost identical, they are both called tepals.

گلایل شمشیری وحشی بهبهان
گلایل شمشیری وحشی بهبهان

These tepals are united at their base to form a tube-shaped structure. The largest tepal is the dorsal tepal, which arches over the three stamens.

Inside the funnel-shaped perianth, the reproductive parts are clearly organized. The stamens are attached to the base of the perianth. The style, which is part of the female reproductive system, has three filiform branches. These branches are spoon-shaped and expand toward the apex. The ovary is 3-locular, meaning it has three chambers. It produces oblong or globose capsules. These capsules contain many brown seeds that are winged and longitudinally dehiscent. This means the seeds are released by splitting open along their length.

The history of the *Gladiolus* involves both scientific classification and human intervention. Carl Linnaeus first described the genus in 1753. He used a name that was originally attributed to Joseph Pitton de Tournefort. While wild species have flowers that vary in size, commercial varieties are very different. Centuries of hybridization and selection have created spectacular giant flower spikes. These large, colorful displays are the result of humans breeding specific traits together.

There is immense variety among the many species within this genus. There are approximately 260 species endemic to southern Africa. About 76 species are found in tropical Africa. Additionally, about 10 species are native to Eurasia. The genus is so diverse that Plants of the World Online accepts almost 300 species and hybrids.

Gladiolus Italicus Bulbs, Behbahan, Iran
Gladiolus Italicus Bulbs, Behbahan, Iran

Colors range from pink, reddish, and light purple to white, cream, orange, or red. This vast diversity makes the *Gladiolus* a significant subject in botanical study.

Taxonomically, the *Gladiolus* genus has undergone changes as science has progressed. Several genera were formerly considered distinct from *Gladiolus*. These include *Acidanthera*, *Anomalesia*, *Homoglossum*, and *Oenostachys*. Today, these are all included within the *Gladiolus* genus. While the genus is divided into many sections, most species are only tentatively placed. This ongoing classification helps scientists understand the evolutionary relationships between different flowering plants.

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File:Gladiolus Italicus, Behbahan.jpg
Gladiolus Italicus, Behbahan.jpg
File:گلایل شمشیری وحشی بهبهان.jpg
گلایل شمشیری وحشی بهبهان.jpg
File:Gladiolus Italicus Bulbs, Behbahan, Iran.jpg
Gladiolus Italicus Bulbs, Behbahan, Iran.jpg
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