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Helianthus schweinitzii; photograph author not stated, no rights reserved CC0author not stated, no rights reserved · observed growing wild · 2021-11-02

Helianthus schweinitzii Torr. & A.Gray

Schweinitz's sunflower

Asteraceae · North Carolina, South Carolina

No habitat climate
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Helianthus schweinitzii, photograph (c) Devin Floyd, some rights reserved (CC BY)Helianthus schweinitzii, photograph (c) Devin Floyd, some rights reserved (CC BY)Helianthus schweinitzii, photograph author not stated, no rights reservedHelianthus schweinitzii, photograph author not stated, no rights reservedHelianthus schweinitzii, photograph author not stated, no rights reservedHelianthus schweinitzii, photograph author not stated, no rights reserved 143 photographs ›

Summary

Helianthus schweinitzii, commonly known as Schweinitz's sunflower, is a rare, federally endangered perennial wildflower native to the Piedmont physiographic province of North Carolina and South Carolina. It is a member of the sunflower family (Asteraceae). Typically growing between 1 and 2 meters (3 to 7 feet) tall, the plant is distinguished by its yellow ray flowers, narrow leaves, and unique ecological and genetic traits. It is primarily found in specialized open habitats such as prairies, roadsides, and utility and highway rights-of-way in the Carolinas. More on Wikipedia ›

Quoted from Wikipedia, "Helianthus schweinitzii", CC BY-SA 4.0.

About the genus · Helianthus

Helianthus is a genus comprising around 50 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. The species of Helianthus are native to North America. The best-known species is the common sunflower. More on Wikipedia ›

Quoted from Wikipedia, "Helianthus", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: 102 in-range records, none placed to within 10 km. 102 of the 102 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeNorth Carolina, South Carolina · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker35.222, -80.631 · in the densest population, 97 records (95% of those in range)
Evidence usedThe map marker rests on all 102 georeferenced records inside the native range; the map shows only the 55 openly licensed ones, which alone would put the marker 36 km away. No climate across the range is derived for this species. 102 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 102 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Helianthus schweinitzii, photograph 1did not loadHelianthus schweinitzii, photograph 2did not loadHelianthus schweinitzii, photograph 3did not loadHelianthus schweinitzii, photograph 4did not loadHelianthus schweinitzii, photograph 5did not loadHelianthus schweinitzii, photograph 6did not load

Photographs: (c) Devin Floyd, some rights reserved (CC BY) (2); author not stated, no rights reserved · CC0 (4).

Other Helianthus 44 in the reference

Helianthus agrestis Helianthus agrestis Rural sunflower Photo: CC BY, sblumenHelianthus angustifolius Helianthus angustifolius Swamp sunflower Photo: CC BY, Sam KieschnickHelianthus annuus Helianthus annuus Sunflower Photo: CC BY, Michelle W. （鍾偉瑋）Helianthus anomalus Helianthus anomalus Sand sunflower Photo: CC BY, Patrick CoxHelianthus argophyllus Helianthus argophyllus Silverleaf sunflower Photo: CC BY, Suanne PyleHelianthus atrorubens Helianthus atrorubens Purple-disk sunflower Photo: CC0, author not statedHelianthus bolanderi Helianthus bolanderi Bolander's sunflower Photo: CC BY, Larry JensenHelianthus californicus Helianthus californicus California sunflower Photo: CC BY, jayjtHelianthus carnosus Helianthus carnosus Fleshy sunflower Photo: CC BY, Brandon CorderHelianthus ciliaris Helianthus ciliaris Texas blueweed Photo: CC BY, Eric KnightHelianthus debilis Helianthus debilis Cucumberleaf sunflower Photo: CC0, author not statedHelianthus decapetalus Helianthus decapetalus Thinleaf sunflower Photo: CC0, author not stated all 45 ›

Names & registers

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Asteraceae
Described by
Torr. & A.Gray
Native to
North Carolina, South Carolina
Wild records
102 in range · 55 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-22
GBIF species record gbif.species answeredasked 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate nothing to reportasked 2026-10-22102 in-range records, none placed to within 10 km
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 6 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…