What is this Ptychosperma?

[caixeta]

[Pal Meir]

Pt sanderianum?

http://www.palmpedia.net/wiki/Ptychosperma_sanderianum

[bubba]

Got one here

[Stevetoad]

Whoa! That’s a beauty. Never seen one before. 

[HtownPalms]

I love little palm trees like those. They look awesome! 

[akamu]

Those are cool . I have a small one .anyone have any experience with these cold tolerance etc 

[caixeta]

20 hours ago, Pal Meir said:

Pt sanderianum ?

http://www.palmpedia.net/wiki/Ptychosperma_sanderianum

What ptychosperma I photographed has longer, thinner, leaflets arched .

[Pal Meir]

17 hours ago, caixeta said:

What ptychosperma I photographed has longer, thinner, leaflets arched .

There are 29 accepted species of the genus Ptychosperma:

http://www.theplantlist.org/browse/A/Arecaceae/Ptychosperma/

Now you can chose which species might be the right one. Good luck!

I am specialized only in the Syagrus/Cocos subgenus Lytocaryum, so I can’t help you further.

[Pal Meir]

But if it is NOT a Ptychosperma? Its habit resembles a bit Rhopaloblaste singaporensis, e.g. these photos from Palmpedia:

[John hovancsek]

Can you show a pic of the flower and seed?

[caixeta]

1 hour ago, John hovancsek said:

Can you show a pic of the flower and seed?

 

[bubba]

[Pal Meir]

What does the cross-section of Rhopaloblaste singaporensis seeds look like? That species was once labeled as Ptychosperma singaporense.

[atlantisrising]

My opinion is Ptychosperma is incorrect genus, the leaflets are too narrow. Granted I have not seen all the species of Ptycho but it looks nothing like any I have.

[Pal Meir]

1 hour ago, atlantisrising said:

My opinion is Ptychosperma is incorrect genus, the leaflets are too narrow. Granted I have not seen all the species of Ptycho but it looks nothing like any I have.

I have checked all the 28 species and 6 »dubious« ones too of Essig (1978) and the only one with similar narrow pinnae is Pt. sanderianum. But I guess that Caixeta’s palm might be a hybrid (with Pt. sanderanum) or more likely Rh. singaporensis.

[Pal Meir]

No »yellow midrib« on the pinnae? (In Essig 1978 the species is called »sanderanum« withou an i.)

[caixeta]

This Palm is located in the IAC in Campinas - SP.

[Pal Meir]

Ptychosperma angustifolium is not an accepted name (»nomen obscurum« Essig 1978):

http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:669355-1

It stands for Drymophloeus litigosus, a totally different looking palm:

http://www.palmpedia.net/wiki/Drymophloeus_litigiosus

 

[caixeta]

2 minutes ago, Pal Meir said:

Ptychosperma angustifolium is not an accepted name (»nomen obscurum« Essig 1978):

http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:669355-1

It stands for Drymophloeus litigosus, a totally different looking palm:

http://www.palmpedia.net/wiki/Drymophloeus_litigiosus

 

OK 

[Pal Meir]

1 hour ago, caixeta said:

This Palm is located in the IAC in Campinas - SP.

The palm on that photo looks to me like Pt. sanderianum.

[Pal Meir]

There seem to be two different palms on your photo:

The small one on the left looks like Drymophloeus litigiosus = »Coleospadix oninensis = Ptychosperma angustifolia«.