Northern Prairie Wildlife Research Center
Midwestern Wetland Flora
Illustrated Glossary of Floral Terms
- A one-seeded, dry, indehiscent fruit with the seed coat not attached to
the mature ovary wall.
- In reference to leaves: occurring at different levels successively on
opposite sides of stem.
- Living only for one year.
- An ear-shaped appendage to a leaf or stipule.
- A bristle-like process.
- A fruit with the seeds surrounded only by fleshy material.
- Living for two years.
- An accessory structure at the base of some flowers, usually appearing
- A secondary bract.
- A stiff hair.
- A dry, dehiscent fruit splitting into 3 or more parts.
- Bearing marginal hairs.
- Said of leaves that partially encircle the stem at the base.
- Referring to an inflorescence that is made up of many tiny florets crowded
together on a receptacle.
- An enlarged, solid, rounded, underground stem, which is covered with a
few thin scales or leaves.
- All the petals of a flower.
- A type of inflorescence in which the central flowers open first.
- Splitting at maturity.
- A fruit with the seed surrounded by a hard, dry covering which, in turn,
is surrounded by fleshy material.
- Referring to a solid object that is broadest at the middle, gradually
tapering to both ends.
- Broadest at the middle, gradually tapering to both ends.
- Referring to a cluster of slender roots, all with the same diameter.
- The stalk of a stamen.
- A dry, dehiscent fruit that splits along one side at maturity.
- Having a bluish appearance.
- A sterile scale found in grasses
- Not splitting open at maturity.
- Referring to the position of the ovary when it is below the point of attachment
of the sepals and petals.
- A cluster of flowers.
- Lance-shaped; broadest near the base, gradually tapering to the narrower
- Referring to a solid object that is broadest near the base, gradually
tapering to the narrower apex.
- A fertile scale found in grasses.
- Elongated and uniform in width throughout.
- A sharp point at termination of an organ or other structure.
- A small nut.
- Reverse lance-shaped; broadest at the apex, gradually tapering to the
- Broadest at the middle, and tapering to both ends, but broader than elliptic.
- Referring to a solid object that, in side view, is nearly the same width
- Broadly rounded at the apex, becoming narrowed below.
- Referring to a solid object that is broadly rounded at the apex, becoming
- In reference to leaves: forming a pair opposite each other on the stem.
- That part of the pistil that contains the ovules.
- Broadly rounded at the base, becoming narrowed above; broader than lanceolate.
- Referring to a solid object that is broadly rounded at the base, becoming
- Immature seed.
- Divided radiately, like the fingers of a hand.
- An arrangement of flowers consisting of several racemes.
- Living for 3 or more years.
- All the sepals and petals of a flower.
- A sac-like structure enclosing the pistil in Carex.
- Divided once along an elongated axis into distinct segments.
- The ovule-producing part of the flower.
- Lying flat on the ground.
- A grouping of flowers along an elongated axis where each flower has its
- That part of the flower to which the sepals, petals, stamens, and pistils
are usually attached.
- An underground, horizontal stem.
- An indehiscent winged fruit.
- A tiny, leaflike structure; the structure that subtends each flower in
a grass or sedge.
- A fleshy axis in which flowers are embedded.
- A large bract subtending or sometimes enclosing a cluster of flowers.
- A grouping of flowers along an elongated axis where each flower lacks
- A small spike.
- The pollen-producing organ of a flower.
- The terminal part of a pistil.
- A leaflike outgrowth at the base of a leaf stalk.
- A horizontal stem lying on the surface of the soil.
- That part of the pistil between the ovary and the stigma.
- Referring to the position of the ovary when it is above the point of attachment
of sepals, petals, stamens, and pistils.
- Nearly cylindrical in section.
- A wart-like process.
- A cluster of flowers in which the flower stalks arise from the same level.
- The wing of the fruit in Rumex.
- The arrangement of 3 or more structures at a point on the stem.
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