Clasping Venus's-looking-glass
Triodanis perfoliata
Found in roadsides, gardens, glades, dry forests, disturbed areas. FloraQuest, phone app (app page) What its natural habitat tells you
Native to Virginia. How scores work Is it native here?
Profile 94%
- Height
- 4–30 inches
- Light
- Full sun, Part shade
- Soil moisture
- Dry

At a glance
- Life cycle
- Annual
- Bloom
- April to July
Not yet recorded · Spread · Leaves
Recorded in 102 Virginia counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Roadsides, fields and disturbed ground
Ground opened by people: roadsides, old fields, pastures, fencerows and lots.
Forests and open woodlands on dry ridges and slopes, often oak or pine.
Also found with this plant
Wildlife whose habitat models include habitats this plant grows in, in Virginia. Shared habitat, not food. 53 animals.
- Horned LarkEremophila alpestris
- Loggerhead ShrikeLanius ludovicianus
- Long-eared OwlAsio otus
- Mourning DoveZenaida macroura
- Northern BobwhiteColinus virginianus
- Northern FlickerColaptes auratus
- Northern MockingbirdMimus polyglottos
- Olive-sided FlycatcherContopus cooperi
- Orchard OrioleIcterus spurius
- OspreyPandion haliaetus
- Purple FinchCarpodacus purpureus
- Red-tailed HawkButeo jamaicensis
- Rough-legged HawkButeo lagopus
- Ruby-crowned KingletRegulus calendula
- Ruby-throated HummingbirdArchilochus colubris
- Sharp-shinned HawkAccipiter striatus
- Short-eared OwlAsio flammeus
- Snowy OwlBubo scandiacus
- Spotted SandpiperActitis macularius
- Summer TanagerPiranga rubra
- Tree SwallowTachycineta bicolor
- Tufted TitmouseBaeolophus bicolor
- Turkey VultureCathartes aura
- White-breasted NuthatchSitta carolinensis
Who uses this plant?
5BeesSoutheastern regional records
Southeastern regional records · Triodanis
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
1Specialist beesPollen specialists
Pollen specialists · Triodanis
- Colletes brevicornis
Flies 1
- Anthrax sinuosa
Flower visits · Carlinville, Illinois, USA
Adult butterflies / moths 1
- Pholisora hayhurstii
Flower visits · Carlinville, Illinois, USA
No records yet · Ants · Beetles · Other wasps · Other insects
Plant details
- Family
- Campanulaceae
- Flower color
- Purple
Safety has not been reviewed for this plant; check toxicity and thorns before planting.
Growing sources and scope
- Bloom · “April to July” · FloraQuest: Carolinas, Georgia (Southeastern Flora Team), phone app (app page) (ranked first; Prairie Moon 2026 Cultural Guide differs) · Carolinas and Georgia
- Flower color · “Purple” · Prairie Moon 2026 Cultural Guide · Nursery cultural guide; height in flower; moisture categories retained as printed
- Height · “4–30 inches” · Minnesota Wildflowers (ranked first; Prairie Moon 2026 Cultural Guide differs)
- Life cycle · “Annual” · Minnesota Wildflowers
- Light · “Full sun (6+ hours); Part shade (3–6 hours)” · Prairie Moon 2026 Cultural Guide · Nursery cultural guide; height in flower; moisture categories retained as printed
- primary_flower_color · “purple” · Prairie Moon 2026 Cultural Guide
- Soil · “Dry” · Prairie Moon 2026 Cultural Guide · Nursery cultural guide; height in flower; moisture categories retained as printed
Also known as
Clasping Venus Looking Glass; Clasping Venus's looking glass; Specularia perfoliata
Conservation status
| Virginia rank | SNR |
|---|---|
| Global rank | G5 |
| VA 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
- Digital Atlas of the Virginia Flora
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- NatureServe Explorer
- 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

























