Which palm tree are these seeds or fruits from?

[qwertz]

My sister brought me such seeds or palm fruits from Tenerife. She claims that she picked green fruit but it turned black. I did not understand if these are such small fruits or if they are seeds pulled out of fruit that started to rot after picking. She picked them after I sent her a photo of Roystonea regia and Syagrus romanzoffiana with a request to bring me palm fruit like these if they were within reach. She claims that the palm from which she picked these fruits looked like a bottle palm. I looked around the town in Google Street View where she was vacationing and found the palm from the attached image. The palm in the image looks like Archontophoenix alexandrae, and the seeds of this palm look completely different. Areca catechu seeds also look completely different. Archontophoenix cunninghamiana seeds as well. Hyophorbe verschaffeltii seeds are more elongated and strongly wrinkled.

[Harry’s Palms]

The palm in the photo looks like a young Roystonia to me . Archontophoenix Alexandrea would have wider leaflets with dark green coloring and a silvery underside. The seeds appear to be from a date palm (Phoenix) and may not be viable if picked green. Harry

[qwertz]

Phoenix canariensis seeds look completely different, phoenix dactylifera seeds are longer in width ratio, they are not wrinkled and both Phoenixes seeds have a compartment like a hot dog bun. These seeds/fruits are much smaller than date pits.

[Fusca]

Those fruits are not from any Phoenix palm which don't have a "cap" from the flower.  For the same reason they're not Syagrus romanzoffiana or Roystonea regia either.  The only palm fruits that come to mind that have that "cap" are Veitchia and Adonidia (I'm sure there's others) but unless those fruits are just extremely immature I don't think it's one of those.

[qwertz]

Adonidia merrillii seeds are much larger and have a different shape.

[Fusca]

50 minutes ago, qwertz said:

Adonidia merrillii seeds are much larger and have a different shape.

I know, that's why I said that they might be immature fruits or a different species.  Most Veitchia seeds are even larger than Adonidia seeds.  Coconut palms sometimes drop immature fruits about the size of your seeds and mature coconuts are massive in comparison.  Without photos of the palms your seeds came from it's very difficult to make an ID.

[qwertz]

In GSV I found such palm trees:

https://www.google.pl/maps/@28.0869851,-16.7375184,3a,30y,24.1h,91.95t/data=!3m7!1e1!3m5!1sAF1QipPpo_mv9MNN5Gyt_UOxXvJKRmu1bTQGhLUW609P!2e10!3e12!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

https://www.google.pl/maps/@28.086956,-16.7372743,3a,30y,232.21h,88.77t/data=!3m7!1e1!3m5!1sAF1QipMUH8aU6JES9gpTYK1yngbt70N0vPDok2Nmt8_G!2e10!3e12!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

https://www.google.pl/maps/@28.0869099,-16.7374565,3a,30y,63.25h,88.01t/data=!3m7!1e1!3m5!1sAF1QipMQZRySGDzKiKaKdOsiVSaH6uTALh3y_quDd1c5!2e10!3e11!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

 

https://www.google.pl/maps/@28.0868201,-16.7373877,3a,25.2y,95.6h,86.93t/data=!3m6!1e1!3m4!1sAF1QipMxS7wNVjGWLcrZ0tT982HAWKlIDT6x2mrLfL0U!2e10!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

 

https://www.google.pl/maps/@28.0870834,-16.7375006,3a,37.5y,77.1h,97.6t/data=!3m6!1e1!3m4!1sAF1QipPNkavsnhz1loG__xS_Od_PysEZ0I9agITzcl2r!2e10!7i3840!8i1920?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

https://www.google.pl/maps/@28.0868542,-16.7373279,3a,30y,93.84h,94.38t/data=!3m6!1e1!3m4!1sAF1QipOqSmf9OLQOc60LYc9pQ3CYpLltV-Nz5s_jLaYG!2e10!7i3840!8i1920?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

[qwertz]

https://www.google.pl/maps/@28.09296,-16.747306,3a,75y,95.06h,101.83t/data=!3m6!1e1!3m4!1sAF1QipPBNVpXvHXzUO-o1Yo-2w6PjUW7IogDpCGtYW2j!2e10!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

https://www.google.pl/maps/@28.0928176,-16.747124,3a,75y,36.39h,104.47t/data=!3m6!1e1!3m4!1sAF1QipPp6tFQk9tQmNHf1Mfc09KGE8HkeSdfNZvIEX3L!2e10!7i7200!8i3600?entry=ttu&g_ep=EgoyMDI0MDkxMS4wIKXMDSoASAFQAw%3D%3D

[tim_brissy_13]

The palms in your map links are Hyophorbe verschaffeltii and (unwell) Cocos nucifera. 

[qwertz]

 

The trunk of the palm tree from the sixth (counting from the top) link to GSV, unlike the other palms identified by tim_brissy_13 as Hyophorbe verschaffelti, resembles the shape of a lava lamp more than a bottle.

The "unshaven" part of the trunk of Cocos nucifera looks different than that of the palms from the seventh and eighth links to GSV.

https://commons.wikimedia.org/wiki/File:Starr_061129-1690_Cocos_nucifera.jpg

[qwertz]

I don't know what to do with these seeds now. I don't know if some species of palm has seeds so small that you have to grab them with tweezers, or if the seeds are so small because they come from fruits that haven't had time to fully develop. If the latter, is there any point in sowing such seeds?

[knell]

10 hours ago, qwertz said:

I don't know what to do with these seeds now. I don't know if some species of palm has seeds so small that you have to grab them with tweezers, or if the seeds are so small because they come from fruits that haven't had time to fully develop. If the latter, is there any point in sowing such seeds?

cut two of them in half vertically and horizontally and look for an embryo (and post the cross sections here if they look viable)

[DoomsDave]

On 9/14/2024 at 7:33 AM, qwertz said:

My sister brought me such seeds or palm fruits from Tenerife. She claims that she picked green fruit but it turned black. I did not understand if these are such small fruits or if they are seeds pulled out of fruit that started to rot after picking. She picked them after I sent her a photo of Roystonea regia and Syagrus romanzoffiana with a request to bring me palm fruit like these if they were within reach. She claims that the palm from which she picked these fruits looked like a bottle palm. I looked around the town in Google Street View where she was vacationing and found the palm from the attached image. The palm in the image looks like Archontophoenix alexandrae, and the seeds of this palm look completely different. Areca catechu seeds also look completely different. Archontophoenix cunninghamiana seeds as well. Hyophorbe verschaffeltii seeds are more elongated and strongly wrinkled.

Those look a lot like Hyophorbe verschaffeltii seeds

[qwertz]

13 hours ago, knell said:

cut two of them in half vertically and horizontally and look for an embryo (and post the cross sections here if they look viable)

I first made a cross-section of the seed, then a longitudinal one. To make a longitudinal section, the seed had to be gripped in a vice, and even after removing the shell, it wasn't cutting, it was sawing with a knife.

  

12 hours ago, DoomsDave said:

Those look a lot like Hyophorbe verschaffeltii seeds

I found the following photo of Hyophorbe verschaffeltii seeds in Google Images.