tag:blogger.com,1999:blog-5460788270738656369.post8342427925741374040..comments2023-12-24T07:02:43.274+08:00Comments on Catalogue of Organisms: The Origins of a Closed BoleteChristopher Taylorhttp://www.blogger.com/profile/11075565866351612441noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5460788270738656369.post-42114002812551240772019-06-25T03:27:14.841+08:002019-06-25T03:27:14.841+08:00I think there is a range in roses, not all types h...I think there is a range in roses, not all types have all the reproductive parts converted into petals. I did mean a simple genetic change of the reproductive organ development that is actually more superficial than it looks.Pattockhttps://www.blogger.com/profile/00741004991950391554noreply@blogger.comtag:blogger.com,1999:blog-5460788270738656369.post-79098072487670285462019-06-24T15:37:07.953+08:002019-06-24T15:37:07.953+08:00The possibility has certainly been entertained, at...The possibility has certainly been entertained, at least for those cases where both secotioid and non-secotioid forms are found in a single species. However, it has also been suggested that there may be situations where secotioid forms are advantageous. For instance, they may survive better in drier habitats where the external membrane may help conserve moisture (in which case, it is interesting that the secotioid <i>Suillus</i> are all known from upland conifer forest). Possibly either alternative may apply depending on the species.<br /><br />To consider the <i>Suillus grevillei</i>-<i>Gastrosuillus laricinus</i> case described in the post: it is certainly possible that '<i>G. laricinus</i>' is just a developmental abnormality of <i>S. grevillei</i>. But then why is the deviant form only known from one location and not more broadly over the species' range? Is this simply a vagary of genetic drift, or is there something more systematic going on?Christopher Taylorhttps://www.blogger.com/profile/11075565866351612441noreply@blogger.comtag:blogger.com,1999:blog-5460788270738656369.post-49692585528134785492019-06-24T14:32:04.519+08:002019-06-24T14:32:04.519+08:00If secotioidity is bad for spore dispersal, and th...If secotioidity is bad for spore dispersal, and they're rare and polyphyletic, it seems tempting to regard them as simply pathological?Andreas Johanssonhttps://www.blogger.com/profile/08802392912541974977noreply@blogger.comtag:blogger.com,1999:blog-5460788270738656369.post-90475660408383261262019-06-24T13:11:40.150+08:002019-06-24T13:11:40.150+08:00If by that you mean not as big a change as it appe...If by that you mean not as big a change as it appears on the surface, then maybe. Aren't double flowers usually infertile, though? Secotioid mushrooms are still fertile though they may not disperse spores as well as open mushrooms.Christopher Taylorhttps://www.blogger.com/profile/11075565866351612441noreply@blogger.comtag:blogger.com,1999:blog-5460788270738656369.post-77218760954979653962019-06-24T07:13:16.708+08:002019-06-24T07:13:16.708+08:00So just the equivalent of a rose becoming a double...So just the equivalent of a rose becoming a double flowered type?Pattockhttps://www.blogger.com/profile/00741004991950391554noreply@blogger.com