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Park			Taxon Code
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National Park Service
U.S. Department of the Interior

NPSpecies - Park Species Profile


Houstonia caerulea
azure bluet
Upper Delaware Scenic and Recreational River
			Record Status: Approved
Occurrence:	Present
Nativeness:	Native
Abundance:	Common

Scientific Name with Authority:		Houstonia caerulea L.
Park Preferred Common Name(s):		azure bluet
Park Synonyms:		Hedyotis caerulea

Taxonomic Hierarchy:		Kingdom Plantae, Phylum Tracheophyta, Subphylum Spermatophytina, Order Gentianales, Family Rubiaceae, Genus Houstonia, Species Houstonia caerulea


Park Tags:
ParkTag -


Threatened/Endangered Status:
State Species of Concern Status:
Ozone-sensitive Status:
NatureServe Global Rank:		G5
NatureServe State Rank:		NY: S5; PA: S5
Evidence:		0 Observations, 0 Vouchers, 2 Data Store References, 0 External Links


Other Parks Where Species is Listed:
Abraham Lincoln Birthplace National Historical Park	Acadia National Park
Antietam National Battlefield	Appalachian National Scenic Trail
Big South Fork National River and Recreation Area	Blue Ridge Parkway
Bluestone National Scenic River	Booker T. Washington National Monument
Carl Sandburg Home National Historic Site	Catoctin Mountain Park
Chattahoochee River National Recreation Area	Chesapeake and Ohio Canal National Historical Park
Chickamauga and Chattanooga National Military Park	Colonial National Historical Park
Congaree National Park	Cowpens National Battlefield
Cumberland Gap National Historical Park	Cuyahoga Valley National Park
Delaware Water Gap National Recreation Area	First State National Historical Park
Fredericksburg and Spotsylvania County Battlefields Memorial National Military Park	Friendship Hill National Historic Site
Gauley River National Recreation Area	George Washington Birthplace National Monument
George Washington Memorial Parkway	Gettysburg National Military Park
Great Falls Park	Great Smoky Mountains National Park
Guilford Courthouse National Military Park	Harpers Ferry National Historical Park
Hopewell Furnace National Historic Site	Horseshoe Bend National Military Park
Indiana Dunes National Park	Jimmy Carter National Historical Park
Kennesaw Mountain National Battlefield Park	Kings Mountain National Military Park
Lincoln Boyhood National Memorial	Little River Canyon National Preserve
Mammoth Cave National Park	Manassas National Battlefield Park
Mill Springs Battlefield National Monument	Natchez Trace Parkway
New River Gorge National Park and Preserve	Obed Wild and Scenic River
Ocmulgee Mounds National Historical Park	Piscataway Park
Prince William Forest Park	Richmond National Battlefield Park
Rock Creek Park	Saint-Gaudens National Historical Park
Shenandoah National Park	Shiloh National Military Park
Stones River National Battlefield	Thomas Stone National Historic Site
Valley Forge National Historical Park	Weir Farm National Historical Park


Last Modified Date:	9/13/2013

NPSpecies - The National Park Service biodiversity database. IRMA Portal version.https://irma.nps.gov/npspecies. Accessed 10/1/2025 1:57:38 PM

NatureServe Global Rank and State Rank

NatureServe. 2017. NatureServe Web Service. Arlington, VA. U.S.A. Available http://services.natureserve.org. Accessed: 12/4/2017. Updated quarterly.

This information is provided by NatureServe (www.natureserve.org) and its network of natural heritage member programs, a leading source of information about rare and endangered species, and threatened ecosystems.


Species Profile	Page 1 of 1	10/1/2025 1:57:38 PM

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