Harper's Beaksedge
Rhynchospora harperi
Found in peaty limesink depression ponds (dolines), from standing water to the upper margins of the pond-shore. Weakley, Flora of the Southeastern United States (2025), South Central edition What its natural habitat tells you
Native to Mississippi. How scores work Is it native here?
Profile 88%
- Height
- Up to about 28 inches
- Light
- Partial shade, Full sun
- Soil moisture
- Moist to standing water
No photograph yet. Looking for an old drawing…
Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source
Hidden from default planting suggestions. Wildlife value and native status remain unchanged.
At a glance
- Life cycle
- Annual or perennial
- Bloom
- July to September
Not yet recorded · Spread · Leaves
Recorded in 1 Mississippi county.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Depression ponds and limesinks
Shallow ponds in Coastal Plain depressions, such as limesinks and the ponds in some Carolina bays, that rise and fall with the seasons.
Also found with this plant
Wildlife whose habitat models include habitats this plant grows in, in Mississippi. Shared habitat, not food. 56 animals.
- Stilt SandpiperCalidris himantopus
- Tree SwallowTachycineta bicolor
- Virginia RailRallus limicola
- Western SandpiperCalidris mauri
- Wild TurkeyMeleagris gallopavo
- Wilson's SnipeGallinago delicata
- Wood StorkMycteria americana
- Yellow RailCoturnicops noveboracensis
Widespread birds also seen here (34)
Found in many habitats here, so not listed above.
- American Crow
- American Goldfinch
- American Kestrel
- American Robin
- Belted Kingfisher
- Black-crowned Night-heron
- Blue Grosbeak
- Carolina Chickadee
- Chimney Swift
- Common Grackle
- Common Nighthawk
- Common Yellowthroat
- Cooper's Hawk
- Eastern Kingbird
- Eurasian Collared-dove
- European Starling
- Fish Crow
- Great Crested Flycatcher
- Great Horned Owl
- Mourning Dove
- Northern Cardinal
- Northern Mockingbird
- Osprey
- Red-shouldered Hawk
- Red-tailed Hawk
- Red-winged Blackbird
- Sharp-shinned Hawk
- Swallow-tailed Kite
- Tufted Titmouse
- Turkey Vulture
- White-throated Sparrow
- Yellow-breasted Chat
- Yellow-crowned Night-heron
- Yellow-rumped Warbler
Who uses this plant?
3CaterpillarsGenus host records with ranges including MS
Genus host records with ranges including MS · Rhynchospora
- Euphyes dukesiDukes' Skipper
- Lethe appalachiaAppalachian Brown, Appalachian Eyed Brown
- Synchlora frondariaSouthern Emerald
4BeesSoutheastern regional records
Southeastern regional records · Rhynchospora
Individual names are not available yet.
Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
3BirdsRecorded eating Rhynchospora in Mississippi
Diet records by plant genus, from studies across North America. Not a record from this state. Birds whose range includes Mississippi, most records first.
- Wild TurkeySeeds. 5 diet records
- Eastern KingbirdSeeds. 1 diet record
- King RailSeeds. 1 diet record
Direct food only. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Birds that eat Rhynchospora 3
Diet records by plant genus, from studies across North America. Not a record from this state. Avian Diet Database (Hurlbert Lab), CC0 1.0.
- Wild TurkeyMeleagris gallopavo
- Eastern KingbirdTyrannus tyrannus
- King RailRallus elegans
Plant details
- Family
- Cyperaceae
- Flower color
- Red, green or brown
Growing sources and scope
- Bloom · “July to September” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “Red, green or brown” · Lady Bird Johnson Wildflower Center
- Height · “Up to about 28 inches” · Lady Bird Johnson Wildflower Center
- Life cycle · “Annual or perennial” · Lady Bird Johnson Wildflower Center
- Light · “Partial shade; Full sun (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Soil · “Moist; Water; Wet (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
Conservation status
| Mississippi rank | S1 |
|---|---|
| Global rank | G4? |
| MS status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- NatureServe Explorer
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- Weakley, Flora of the Southeastern United States (2025)
- Mississippi occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications










