Edgeworthia? ---> Edgeworthia chrysantha

[tormi]

Hallo,
hier ein Gehölz welches mich schon länger ärgert.

1. Handelt es sich um Edgeworthia?
2. Wenn ja ist es E. gardneri? (=immergrün)
3. wenn nein → HILFE

Bilder aufgenommen: heute

[JDL]

at first sight this indeed looks like an Edgeworthia.

I am not sure, but Edgeworthia gardneri is evergreen.
Here it looks as if the leaves are turning yellowish green, and that the plant probably is deciduous when flowering (this is not the case for E. gardneri where the leaves are present during flowering period).

So at this moment (without extra info) I should say Edgeworthia chrysantha.

grtjs

Jan

[Buck]

Agree with Jan: Edgeworthia chrysantha. If this stays evergreen or semi-evergreen, one possibility is a hybrid of the two species, seen at Raulston Arboretum NC.

[tormi]

Hey Jan,
thanks for your comment,
E. chrysantha was my first thought too, but I've compared the leaves size with the description in Krüssmann (which is not that elabored) and Roloff/Bärtels, which are told to be 12 to 15 cm long. The leaves of this shrub are in all somewhat longer. E. gardneri is indeed an evergreen shrub, but it is frost susceptible, this is maybe a cause for the change of color, similar to Stachyurus salicifolius, an other evergreen shrub which looses the leaves during winter (at least at my place).

to be continued

[JDL]

Tom,

Very interesting!
The more I investigate plants in order to compose and adjust my keys, the more I see how more variable these are (in several aspects), often more so than one should expect from the descriptions.
Like Edgeworthia, I've seen many with much more than the 10-13 secondary veins, and also in many cases the leaves are realy large.
So it is always encouragable to stay allert like you do, and not automatically decide that it will be the one or the other species without questioning further.

I only have 1 leaf in my herbarium of Edgeworthia gardneri (wild collected), and I can not tell very much about it regarding differences with the other one yet (certainly not from one single leaf).

grtjs

Jan

[bee]

Hallo,
vielleicht hilft auch die Beschreibung (zusätzlich zu der Blattbeschreibung) in der eflora von China weiter:

http://www.efloras.org/florataxon.aspx? ... =200014519 (E. gardneri)
http://www.efloras.org/florataxon.aspx? ... =200014518 (E. chrysantha)

[JDL]

FOC is very interesting.

But should be used with prudence.

For example:

one should say, when consulting FOC

that Tom' shrub is Edgeworthia chrysantha

IF branches are NOT trichotomous for E. gardneri (but this is not mentioned and that's a pity)



one should say, when consulting FOC

that my leaf belongs to E. gardneri, as the pubescence is not really sericeous, but on the other hand the leaf apex is acuminate (not acute)

as I said one leaf (certainly in this genus) is not enough (you need several shoots to examine and to verify how accurate FOC is)

grtjs

Jan

[tormi]

hey,

thanks to all of you, Ii gets the name: E. chrysantha. One of these days I'll get some leaves to compare with all the informations you gave me. I'll let you know...

[Durian]

Vielleicht interessieren folgende Info & Fotos: Dieser kleine Srauch steht in der Flora Köln aussen vor dem Subtropenhaus; die Fotos wurden aufgenommen am 13.1.2013; da war der Strauch blattlos

[Durian]

Hier ein aktuelles Foto aus Köln mit Blatt

[JDL]

thanks, few additional images you can find here:
http://www.vbta.be/PLANTCOL/bc-qry50.ph ... dgeworthia

grtjs

Jan