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Eurybia saxicastellii; photograph (c) Evan M. Raskin, some rights reserved (CC BY) CC BY(c) Evan M. Raskin, some rights reserved (CC BY) · observed growing wild · 2021-09-09

Eurybia saxicastellii (J.J.N.Campb. & Medley) G.L.Nesom

Rockcastle aster

Asteraceae · Kentucky, Tennessee

No habitat climate
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Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY)Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY)Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY)Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY)Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY)Eurybia saxicastellii, photograph (c) Evan M. Raskin, some rights reserved (CC BY) 13 photographs ›

Summary

Eurybia saxicastelli, commonly known as the Rockcastle aster, is an herbaceous perennial native to the south eastern United States. It is present only in the states of Kentucky and Tennessee along the Rockcastle River and the nearby Big South Fork River. As a result of its extremely restricted range as well as human alterations to its habitat, it is considered critically imperiled by NatureServe. The flowers appear in the late summer through fall and have ray florets that are pale blue to pale white and yellow disc florets that turn purplish with age.

Quoted from Wikipedia, "Eurybia saxicastelli", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: 20 in-range records, none placed to within 10 km. 20 of the 20 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.
NativeKentucky, Tennessee · 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 marker36.662, -84.407 · in the densest population, 20 records (100% of those in range)
Evidence usedThe map marker rests on all 20 georeferenced records inside the native range; the map shows only the 11 openly licensed ones, which alone would put the marker 42 km away. No climate across the range is derived for this species. 20 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 20 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Eurybia saxicastellii, photograph 1did not loadEurybia saxicastellii, photograph 2did not loadEurybia saxicastellii, photograph 3did not loadEurybia saxicastellii, photograph 4did not loadEurybia saxicastellii, photograph 5did not loadEurybia saxicastellii, photograph 6did not load

Photographs: (c) Evan M. Raskin, some rights reserved (CC BY) (6).

Other Eurybia 12 in the reference

Eurybia conspicua Eurybia conspicua Showy aster Photo: CC BY, scottj800Eurybia divaricata Eurybia divaricata White wood aster Photo: CC BY-SA, Douglas GoldmanEurybia furcata Eurybia furcata Forked aster Photo: CC BY, Brandon CorderEurybia glauca Eurybia glauca Gray Aster Photo: CC0, author not statedEurybia hemispherica Eurybia hemispherica Showy aster Photo: CC BY, jmphelps Eurybia × herveyi Asteraceae Eurybia macrophylla Eurybia macrophylla Large-leaved aster Photo: CC0, author not statedEurybia radula Eurybia radula Low rough aster Photo: CC BY, Scott WardEurybia radulina Eurybia radulina Rough-leaved aster Photo: CC0, author not statedEurybia schreberi Eurybia schreberi Nettle-leaved Michaelmas-daisy Photo: CC BY, Ryan SorrellsEurybia sibirica Eurybia sibirica Siberian aster Photo: CC BY, Matt BergerEurybia spectabilis Eurybia spectabilis Low showy aster Photo: CC BY, Sean Rigney

Names & registers

Also known as Aster saxicastellii. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Asteraceae
Described by
(J.J.N.Campb. & Medley) G.L.Nesom
Native to
Kentucky, Tennessee
Wild records
20 in range · 11 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 2026-10-2220 in-range records, none placed to within 10 km
Wikidata wikidata answeredasked 2026-10-22IPNI and POWO linked by Kew's number for Eurybia saxicastellii (J.J.N.Campb. & Medley) G.L.Nesom (the item's: IPNI 1060406-2, POWO 981741-1)
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 2026-10-22none of the photographs on this page is credited to GBIF: those shown are other sources', and GBIF's were the same photographs or were set aside by the photograph rules
Wikimedia Commons commons 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 3 datasets via GBIF.org; each carries its own licence.

Cultifolio

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