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Index of Subjects Thanks Ann, Ron, for the confirmation, which is what I was after. I couldn't make Ron's link work, but the Symphyotrichum genus name change is confirmed if you go to (e.g.) the USDA site plants.usda.gov then plug Symphyotrichum into the search box, which brings up a page in which the former name Aster is given as a synonym for the species in question. I can't track it now, but earlier today I read somewhere on line that taxonomic experts had decided that the N. American asters were sufficiently distinct from the European species that they deserved to be moved to a different genus, while the Europeans, discovered first, got to retain the original genus name of Aster. Thanks again, Steve *********************************** Quoting Ronald Arsenault <rongarsenault@gmail.com>: > Hello Anne, > > My understanding is that *Symphyotrichum novi-belgii > *<http://www.cbif.gc.ca/pls/itisca/next?v_tsn=566335&taxa=&p_format=&p_ifx=cbif&p_lang=>is > the curretnly acepted scientific name for this species. See: > http://www.cbif.gc.ca/pls/itisca/next?v_tsn=522227&taxa=&p_king=every&p_string=containing&p_ifx=cbif&p_lang > = > > Ron Arsenault > Memramcook, N.B. > > 2008/10/29 Anne Mills <ocotillo@ns.sympatico.ca> > >> The flowers are Aster novi-belgii, New York Aster. Cheers, Anne >> >> >> ----- Original Message ----- From: "Steve Shaw" <srshaw@dal.ca> >> To: <naturens@chebucto.ns.ca> >> Sent: Wednesday, October 29, 2008 7:46 PM >> Subject: [NatureNS] New York Aster flowers? >> >> >> >> 28 October: I recently collected some insects from one of the few flower >>> sets that are still in bloom in late October, most recently near York >>> Redoubt in Halifax, and would like a tentative ID for this plant. The >>> flowers are 2-3 cm across, have pale blue-violet petals (rays) with >>> a yellow >>> central disk, multiple heads per stalk and simple blade-like leaves. They >>> are very common in clumps at the roadside and on unused land and look like >>> what I used to call michaelmas daisies. I counted about 25 petals >>> per head >>> though they are looking quite beaten up by this date, so perhaps had a few >>> more petals originally. >>> >>> As a non-botanist, I think these are most likely asters, either New York >>> Aster (Symphotrichum novi-belgii), with New England Aster (Symphotrichum >>> novae-angliae) less likely -- that species should have ~40 petals per head. >>> Maybe this info is not much to go on for a possible ID, but does it sound >>> like a reasonable guess, or is there something else out there that I should >>> be considering instead? >>> >>> Any suggestions welcome, including "get yourself a decent flower-ID book". >>> >>> Steve >>> Halifax > -- > Ronald G. Arsenault > Memramcook, N.B.
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