From Natural History of Southeast Alaska
Notes from A TAXONOMIC REVISION OF THE GENERA ANTENNARIA AND SYMPHYOTRICHUM (ASTERACEAE) IN BRITISH COLUMBIA, CANADA 
- S. foliaceum -> S. frondeum
- S. frondeum mostly along mainland?
- "S. frondeum may be confused with S. subspicatum along the northern and central mainland coast. This taxon is best distinguished from S. subspicatum by its entire (vs. serrate), oblanceolate (vs. lanceolate to lance-elliptic) basal and cauline leaves"
- S. chilense on Haida Gwaii (but apparently not currently known from SEAK)
- S. subspicatum seems to be the expected species, especially at low elevations.
|Common name is||Summary|
|Symphyotrichum boreale||Northern bog aster||The primary range of this species appears to be east of the coastal mountains. There is a single collection in ARCTOS identified as this species from Prince of Wales Island. There is a 2015 collection from Haines in the PNW Herbaria Consortium database.|
|Symphyotrichum foliaceum||Alpine Leafybract Aster||The Flora of North America treatments indicates that Symphyotrichum foliaceum var. foliaceum occurs in Southeast Alaska. There no mapped collections in ARCTOS identified (though some collections that are called Douglas Aster (Symphyotrichum subspicatum) are included under a search for S. foliaceum). The FNA treatment of S. subspicatum indicates that species "passes into" this one in Southeast Alaska.|
|Symphyotrichum subspicatum||Douglas Aster||Collections from throughout the region (mostly under Aster subspicatus). FNA indicates this species "passes into" Alpine Leafybract Aster (Symphyotrichum foliaceum) in Southeast Alaska.|