Cyperus iria: Country Or Region Of Origin
Tropical and Subtropical Asia and old world
Plant Profile: Cyperus iria
Taxonomy: Cyperus iriaNames
Ricefield Flatsedge, Rice Flatsedge, Rice Flat Sedge
Phonetic Spelling:
Genus:Cyperus
Species:iria
Family:Cyperaceae
Ricefield flatsedge is a tropical sedge, either annual or perennial, belonging to the Cyperaceae family. This plant thrives in rice paddies and various other moist environments globally, particularly in tropical regions, and is considered a significant weed in rice, cotton, soybean, and other agricultural crops.
Tags
#sedge
#tropical
Similar Plants
Cyperus iria Feature Summary
Attributes
Tropical and Subtropical Asia and old world
worldwide
Perennial
Annual
Fruit
Flowers
Flowers are produced in open umbels on spikes that are subtended by 4-7 leaf-like bracts. The spikes are golden-brown in color, usually sessile, elongate and spreading. Spikelets are erect-spreading, crowded 6-24-flowers and golden to yellowish-green.
Gold/Yellow
Green
Spike
Umbel
Leaves
The lance-linear green leaves are scabrid on the margins and mid-rib (having small, sharp projections) and V-shaped. The leaf sheath is reddish-brown and wraps around the stem.
Green
Simple
Sheath
Linear
Lanceolate
Rough
Stem
Roughly triangular green stem
Green
Angular
Smooth (glabrous)
Whole Plant Traits
Perennial
Annual
Weed
Landscape
Weedy
Cyperus iria Image Gallery
Cyperus iria Attributes
Cyperus iria: Distribution
worldwide
Cyperus iria: Life Cycle
Annual
Biennial
Bulb
Perennial
Woody
Cyperus iria Fruit
Cyperus iria: Fruit Description
The fruit is an obovoid brown achene.
Cyperus iria: Fruit Type
Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua
Cyperus iria: Fruit Color
Brown/Copper
Cyperus iria Flowers
Cyperus iria: Flower Description
Flowers are produced in open umbels on spikes that are subtended by 4-7 leaf-like bracts. The spikes are golden-brown in color, usually sessile, elongate and spreading. Spikelets are erect-spreading, crowded 6-24-flowers and golden to yellowish-green.
Cyperus iria: Flower Color
Gold/Yellow
Green
Cyperus iria: Flower Inflorescence
Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel
Cyperus iria Leaves
Cyperus iria: Leaf Description
The lance-linear green leaves are scabrid on the margins and mid-rib (having small, sharp projections) and V-shaped. The leaf sheath is reddish-brown and wraps around the stem.
Cyperus iria: Leaf Color
Green
Cyperus iria: Leaf Type
Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple
Cyperus iria: Leaf Shape
Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate
Cyperus iria: Hairs Present
No
Yes
Cyperus iria: Leaf Feel
Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy
Cyperus iria Stem
Cyperus iria: Stem Description
Roughly triangular green stem
Cyperus iria: Stem Color
Green
Cyperus iria: Stem Is Aromatic
No
Yes
Cyperus iria: Stem Cross Section
Angular
Oval
Round
Square
Cyperus iria: Stem Surface
Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)
Cyperus iria Whole Plant Traits
Cyperus iria: Plant Type
Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower
Cyperus iria Landscape
Cyperus iria: Problems
Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy
