Difference between Grass and Sedge

Grass

Grasses are monocotyledonous flowering plants that belong to the family Gramineae or Poaceae. This family also includes cereal crops and bamboos.

Grasses have hollow stems (except at nodes) and narrow leaves. These leaves are arranged alternatively in two ranks. The lower leaves form an opened leaf sheath.

Grasslands constitute most of the Earth’s vegetation. Also, they are widely distributed across continents.

Sedge

Sedges are grass-like monocotyledonous flowering plants that belong to the family Cyperaceae. They are perennial plants that mostly prefer moist locations or wetlands. Their leaves are arranged spirally in three ranks. Also, their stems are triangular and solid. Examples – Cyperus papyrus (papyrus sedge), Cyperus rotundus (nutsedge), Eleocharis dulcis (water chestnut).

Both sedges and grasses have inconspicuous flowers with no petals or sepals. They are usually covered with papery scales.

Explore: Monocot and Dicot Stem

Difference between Grass and Sedge

Grass

Sedge

Grass belongs to the Poaceae family.

Sedge belongs to the Cyperaceae family.

They have cylindrical and hollow stems.

They have triangular and solid stems.

Their leaves are arranged alternatively in two ranks.

Their leaves are arranged spirally in three ranks.

Their leaf sheath is open.

Their leaf sheath is closed.

They show caryopsis (grain), where the fruit’s skin adheres to the seed coat.

They show achene fruit (small, single-seeded, dry indehiscent).

They usually have two bracts.

They have only one bract.

Also Read: Anatomy of Monocot and Dicot Plants

Frequently Asked Questions

What are rushes?

Rushes are herbaceous monocotyledons that resemble sedges and grasses. They belong to a separate family called Juncaceae. They are mostly exclusive to wetland habitats. Example – Juncus bufonius (toad rush).

What is a graminoid?

Graminoids are herbaceous grass-like plants. It includes three major families, namely – Juncaceae (rushes), Poaceae (grasses) and Cyperaceae (sedges). These graminoids are widespread across different habitats.

What is achene?

Achene is a simple dry fruit seen in most flowering plants. They are usually formed from one carpel. Also, they do not split open at maturity (indehiscent). Achene usually has a seed-like appearance, but it is actually a fruit with a seed. Example – Strawberry.

Also see: Grassland Dominant Plants.

Visit BYJU’S Biology for more exciting topics.

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