Tony Avent's comprehensive yet concise listing of the Lycoris genus

john@oltarakwa.co.uk john@oltarakwa.co.uk
Wed, 28 Aug 2019 01:19:45 PDT
Very interesting, thanks Lee and Tony.

If those nothospecific epithets have not yet been published they are 
invalid - publication should always take place before a name is 
'released.' They can still be published and validated, assuming nobody 
has nicked them first, or another name published for that hybrid. But 
the sooner the better!

John Grimshaw






On 2019-08-28 07:18, Lee Poulsen wrote:
> I was perusing through some of the new selections of Lycoris recently
> offered by Plant Delights, when I noticed that a couple of varieties I
> ordered in the past now have different species or nothospecies names
> than what are on my labels. I looked further and noticed that some
> species were now listed as nothospecies (they put a × in front of the
> species name where there wasn’t one before). Then I noticed that there
> were a lot more synonyms than before. This caused me to recall that
> Tony Avent (of Plant Delights) answered a question about Lycoris
> hardiness with a rather extended reply describing all the different
> Lycoris species and nothospecies. I hunted it down and read it more
> carefully this time. And I realized it was a definitive listing of the
> current understanding of the Lycoris genus. I thought maybe it had
> been incorporated into the PBS wiki, but it has not. I then tried
> hunting for a more explanatory version of this list on the Plant
> Delights website but was unsuccessful.
> 
> So I would like (realizing one doesn’t always get what they want) some
> kind of real definitive list, all in one place, giving all this
> information, all the former names of what are now synonyms, the
> nothospecies' suspected or known parent species, and possibly some
> kind of more verbose descriptions, like the article Jim Waddick wrote
> that is referenced on the wiki, of each species and nothospecies (at
> least all the ones that have been available from Jim Waddick, Plant
> Delights, Telos Rare Bulbs, etc. for the past couple of decades).
> And add in the information on Lycoris (×)haywardii being merely some
> form of of Lycoris sprengeri that I found hidden in a later post from
> Tony that I had previously not paid sufficient attention to until
> perusing his new Lycoris offerings. Maybe this information could be
> incorporated into the wiki.
> Oh, and some references or links to the articles and DNA analyses that
> are alluded to below would be very nice, too.
> 
> And please add my thanks to Tony for this concise summary of so much
> information that he provided us almost a year ago, that I didn’t
> realize was so comprehensive!
> 
> —Lee
> 
>> On Sep 12, 2018, at 1:47 PM, Tony Avent <tony@plantdelights.com> 
>> wrote:
>> 
>> Hi Jane;
>> 
>> Hopefully this will help.
>> 
>> Based on the extensive body of DNA research, and confirmed in our 
>> field trials, there are only 7 lycoris species, with 1 still tbd...a 
>> far cry from the 13-20 often cited.
>> 
>> Two of the lycoris species have foliage that emerges in fall, and five 
>> have foliage that emerges in late winter/early spring.  Because all 
>> lycoris are winter-growing, the foliage emergence times determines 
>> their ability to withstand winter cold.  Areas with extremely cold 
>> temperatures in early fall that remains so all winter may actually 
>> delay foliage emergence, making the plant more winter hardy than in 
>> conditions with fluctuating winter temperatures.
>> 
>> Those species with fall-emerging leaves are generally winter-hardy to 
>> Zone 7....some clones slightly more, some slightly less.
>> Fall foliage (zone 7)
>> Lycoris aurea
>> Lycoris radiata
>> 
>> Those species with spring-emerging leaves are generally winter-hardy 
>> to Zone 5, possibly colder
>> Spring Foliage (Zone 5)
>> Lycoris chinensis
>> Lycoris longituba
>> Lycoris sanguinea
>> Lycoris shaanxiensis (virtually everything in commerce is x straminea) 
>> with fall foliage
>> Lycoris sprengeri
>> 
>> Tbd
>> Lycoris guangxiensis
>> 
>> All other lycoris are hybrids. Hybrids of two spring-leaf species 
>> retains the Zone 5 hardiness, but crosses of a spring-leaf and a 
>> fall-leaf species, always produces offspring with fall foliage, so the 
>> hardiness of these always reverts to Zone 7.  In theory, crosses with 
>> two spring species and one fall species could delay leaf emergence 
>> enough to increase winter hardiness.
>> 
>> Lycoris Hybrids
>> Many of these names are long established, most originally published as 
>> species, which DNA has shown to be hybrids.  Other names are 
>> unpublished and only used by us as working names for the hybrids we 
>> grow.
>> 
>> Fall x Fall (Zone 7)
>> Two species hybrids
>> x albiflora (syn: L. elsiae) - aurea (fall) x radiata (fall)
>> 
>> Spring x Spring (Zone 5)
>> Two species hybrids
>> x caldwellii - chinensis (spring) x longituba (spring)
>> x chejuensis - chinensis (spring) x sanguinea (spring)
>> x flavescens - chinensis (spring) x sanguinea (spring)
>> x incarnata (same as x squamigera)
>> x sprenguinea (unpublished) - sprengeri (spring) x sanguinea (spring)
>> x sprengensis (unpublished) - sprengeri (spring) x chinensis (spring)
>> x squamigera (same as elegans, incarnata) - - longituba (spring) x 
>> sprengeri (spring)
>> 
>> Fall x Spring (Zone 7)
>> Two species hybrids
>> x chinaurea (unpublished)- aurea (fall) x chinensis (spring)
>> x cinnabarina - aurea (fall) x sanguinea (spring)
>> x rosea (same as jacksoniana) - radiata (fall) x sprengeri (spring)
>> x sprengurea - aurea (fall x sprengeri (spring)
>> x straminea (syn: houdyshelii) - radiata (fall) x chinensis (spring)
>> x rubroaurantiaca - undetermined by DNA
>> 
>> Three species hybrids (2 spring x 1 fall)
>> x longitosea (unpublished) - longituba (spring) x sprengeri (spring) x 
>> radiata (fall)
>> x roseguinea (unpublished) - radiata (fall) x sprengeri (spring) x 
>> sanguinea (spring)
>> x rosensis (unpublished) - radiata (fall) x sprengeri (spring) x 
>> chinensis (spring)
>> 
>> Three species hybrids (2 fall x 1 spring)
>> x radichinaurea (unpublished) - radiata (fall) x aurea (fall) x 
>> chinensis (spring)
>> x rosaurea (unpublished) - radiata (fall) x aurea (fall) x sprengeri 
>> (spring)
>> 
>> 
>> Tony Avent
>> Proprietor
>> tony@jlbg.org<mailto:tony@jlbg.org>
>> Juniper Level Botanic 
>> Garden<http://www.juniperlevelbotanicgarden.org/> and Plant Delights 
>> Nursery<http://www.plantdelights.com/>
>> Ph 919.772.4794/fx 919.772.4752
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>> 
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>> 
> 
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