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Cyperus sphacelatus

Rottb. (1773)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Cyperaceae Genus: Cyperus

roadside flatsedge

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Description

Key Characters:

Growth Form:

Stems:

Roots:

Leaves:

Flowers:

Fruit:

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
Molokai Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Descr. Icon. Rar. Pl.: 26 (1773)

Other References

Oppenheimer 2008:27 (NEWNAT/Mo); Faccenda 2023b:77 (K, EM, H)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Cyperus sphacelatus Kaupo, Piilani Hwy., ca. 2 km W of Kaupo town Roadside weed along edge of pasture Preserved_Specimen Small patch of ca. 50 plants growing from gravel where water runs in small ditch along the road. Spikelets with reddish marking running along their middle. Caespitose, apparently annual Faccenda, K. 2797 Maui BISH 2022-10-26
2 Cyperus sphacelatus Keopukaloa, betw Honokoi and Papio Gulches Common in pastures and waste areas. Preserved_Specimen Oppenheimer, H.L. 110707 Molokai BISH 2007-11-06
3 Cyperus sphacelatus Kukumamalu [sp?], along Kamehameha Hwy. Vegetation: Hypparhenia sp. Preserved_Specimen Sedge; locally common. Starr, F. 505177 Molokai BISH 2005-05-17
4 Cyperus sphacelatus Kauai Landscape and Nursery off of Kaumualii Hwy. just W of Puhi Weed around garden center area, seen growing only in pots of plants which are for sale Preserved_Specimen Rare, only one plant seen Faccenda, K. 2523 Kauai BISH 2022-07-08
5 Cyperus sphacelatus Hilo, Shopping center at Mamalahoa Hwy and E. Kahaopea St On edge of parking lot, infrequently mowed area Preserved_Specimen Dominant weed in this area Faccenda, K. 2589 Hawaii BISH 2022-08-07
6 Cyperus sphacelatus E end, Puu O Hoku Ranch, vicinity Honokoi Gulch Uncommon in pasture. Preserved_Specimen Oppenheimer, H.L. 50643 Molokai BISH 2005-05-18
7 Cyperus sphacelatus Hilo, intersection of Kinoole St and W. Puainaku St Roadside, sunny area Preserved_Specimen Abundant along the road Faccenda, K. 2581 Hawaii BISH 2022-08-07
8 Cyperus sphacelatus Keopukaloa, Papio Gulch Growing in waste area along disturbed roadside, near pastures. Preserved_Specimen Oppenheimer, H.L. 110706 Molokai BISH 2007-11-06
9 Cyperus sphacelatus East Maui, Kaupo, along roadside. Disturbed lowland, dry roadside, lava substrate, moist area. Associated vegetation: Leucaena leucocephala, Digitaria insularis, Megathyrsus maximus. Preserved_Specimen Sedge Starr, F. 23031501 Maui BISH 2023-03-15
10 Cyperus sphacelatus Hana, Waikoloa Road leading to landfill. Outside landfill entrance Wet, sunny roadside dominated by weeds Preserved_Specimen Rare, only one plant seen along this road Faccenda, K. 2776 Maui BISH 2022-10-23
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