Flower profile
Straggler daisy
Calyptocarpus vialis
Straggler daisy (Calyptocarpus vialis) is a flowering plant in the Asteraceae family, introduced in the lower 48 states, blooming mostly April–May across the U.S.
Straggler daisy is a wildflower that USDA PLANTS lists as introduced in the lower 48 states. It's on our flower lists for 3 states, and across the U.S. it's most often seen in bloom in April–May.
*iNaturalist research-grade observations, as of October 17, 2026.
Quick look
Calyptocarpus vialis is a species of flowering plant in the family Asteraceae. Common names for C. vialis include straggler daisy, horseherb, lawnflower, and creeping Cinderella-weed. It is native to south Texas, Mexico, Belize, Venezuela, and the Caribbean. It has also been introduced east of Texas, Argentina, Hawaii, India, Java, Australia, and Taiwan. It is one of only three species in the genus Calyptocarpus.
- It belongs to the Asteraceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as introduced in the lower 48 states and records it in 13 states. USDA PLANTS
- NatureServe lists it as not native to Louisiana and Hawaii. NatureServe
- In Texas, most iNaturalist sightings of it in flower come in April–May. iNaturalist
- In Louisiana, most iNaturalist sightings of it in flower come in January–December. iNaturalist
- iNaturalist has 32,278 research-grade sightings of it in Texas, ranking #5 among the 169 flowers on our Texas list. iNaturalist
- iNaturalist has 1,461 research-grade sightings of it in Louisiana, ranking #15 among the 154 flowers on our Louisiana list. iNaturalist
- iNaturalist has 659 research-grade sightings of it in Hawaii, ranking #76 among the 118 flowers on our Hawaii list. iNaturalist
When does it bloom?
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- Texas
- Not listed Not on Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife. NatureServe has no Texas rank for it. 31 TAC 69.8
- Louisiana
- No list Louisiana has no state list of endangered or threatened plants separate from the federal list, so we show federal status and NatureServe's Louisiana ranks. NatureServe: SNA, not applicable (usually because it isn't native there) in Louisiana.
- Hawaii
- Not listed Not on Hawaii threatened and endangered plants (HAR 13-107; the state list follows the federal list), DLNR Division of Forestry and Wildlife. NatureServe: SNA, not applicable (usually because it isn't native there) in Hawaii. HAR 13-107
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
NC State Extension notes: “The leaves can be eaten by both humans and animals.” NC State Extension
It isn't on the ASPCA plant list, and NC State Extension doesn't flag it for pets.
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records straggler daisy in 13 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Alabama, Arizona, Arkansas, Florida, Georgia, Hawaii, Illinois, Louisiana, Mississippi, New Mexico, Oklahoma, South Carolina, Texas.
Texas counties with USDA records: Angelina, Bastrop, Bee, Bell, Bexar, Blanco, Brazoria, Brazos, Brewster, Brown, Burleson, Caldwell, Cameron, Chambers, Comal, Dallas, Duval, Erath, Fayette, Fort Bend, Frio, Galveston, Gillespie, Goliad, Gonzales, Grayson, Guadalupe, Harris, Hays, Hidalgo, Hood, Jackson, Jim Wells, Karnes, Kendall, Kenedy, Kinney, Kleberg, Maverick, McLennan, Nueces, Pecos, San Jacinto, San Patricio, Somervell, Starr, Tarrant, Tom Green, Travis, Uvalde, Val Verde, Victoria, Walker, Washington, Webb, Willacy, Williamson, Wilson, Zapata.
Louisiana counties with USDA records: Allen, Assumption, Caddo, Calcasieu, Cameron, East Baton Rouge, Grant, Iberia, Jefferson, Jefferson Davis, Lafayette, Lafourche, Livingston, Madison, Natchitoches, Orleans, Ouachita, Plaquemines, Rapides, St. Bernard, St. Charles, St. James, St. John the Baptist, St. Landry, St. Martin, St. Mary, St. Tammany, Tangipahoa, Terrebonne, Vermilion, Washington, West Feliciana.
Hawaii counties with USDA records: Honolulu, Kauai, Maui.
Names, range and relatives
Native status by region (USDA PLANTS): Hawaii: Introduced; Lower 48 states: Introduced; Pacific Basin (excluding Hawaii): Introduced.
Other scientific names (synonyms in USDA PLANTS): Synedrella vialis.
County records: USDA PLANTS lists it in 120 counties across 11 states; the most are in Texas (59), Louisiana (32), Florida (18).
More from the Asteraceae family (212 on Bloomipedia; most observed first): Common yarrow, Goldenrods, White snakeroot, Sunflowers, Chicory, Black-eyed Susan, Bull thistle, Common dandelion.
More Texas flowers
Sources
- USDA, NRCS. PLANTS Database, profile CAVI2.
- iNaturalist, Calyptocarpus vialis: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Calyptocarpus vialis (lead quoted under CC BY-SA 4.0).
- Texas: Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife.
- Texas: Texas noxious and invasive plant list (4 Tex. Admin. Code § 19.300(a)).
- Hawaii: Hawaii threatened and endangered plants (HAR 13-107; the state list follows the federal list), DLNR Division of Forestry and Wildlife.
- Hawaii: Hawaii noxious weed list (HAR 4-68).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Calyptocarpus vialis (global and state ranks).
- Edibility and toxicity: NC State Extension.
- Photo: Brandon Johnson via iNaturalist · CC BY 4.0 · resized.