Found this video that illustrates it better Toson. This is Fray Jorge much further South. Botija is further north therefore gets a lot less fog. As you can see the density of the vegetation varies according to where most of the fog regularly hits it and is much less in places where it is infrequent...

flower may not help to ID this cop.sp, tap root or fibrous root?

It's my first Erioscye when I was crazy for this species.Sometimes I dont think it's Erioscye but Thelocactus. ID plz, no flower pics.

DaveW wrote: ↑Sat Aug 18, 2018 6:21 pm Quebrada Botija. (red marker on map)

BOTIJA.png

That's strange, many articles mention that solaris grow well in Botija valley coz' fog could easily enter this place.

Thanks Atoz. Rather strange since most cacti in that area depend on the fog, therefore grow higher up the hills at fog level rather than being lowland plants. Ritter is possibly suggesting in the past the plants relied on rain for growing at a lower altitude, though they have not had rain for many ...

In his book 《Kakteen in Südamerika : Ergebnisse meiner 20jährigen Feldforschungen》 Ritter referred to Cop.solaris as below: / ... Man kann wohl annehmen, daß diese Untergat- tung ehemals eine viel weitere Verbreitung gehabt haben wird, aber an der zunehmenden Ausdörrung Nordchiles zugrunde gegangen ...

Thanks Dave,that's help.

Strong spines do need much sunlight and nutrient

So the spines become stronger because of the nutrient,the body of a grafted plant also get those nutrient but it cannot be bloated in full sun?

It's from seedling over-nutrient,we can see it has weak root and spine..which proves too much nutrients makes it grows too fast in shape instead of spines.

Because the stock can supply more nutrients for the plant that otherwise would not be available is same qunatities in ots own roots. I have a lobivia arachnacantha grafted on opuntia ficus indica where it grew more spines and a strong central spine. In addition, the color of the spines turned silky...

We all know many cacti will longated if watered / fertilized too much especially in lack of the sun,their spines grow weak.On the other hand,they also get lots of supplies ,water for example, from their stocks when they grafed,many of the grafted ones could have very very strong spines.I confused wh...

the seller told me it's eriosyce but i guess Weingartia or sth. else

neoporteria chilensis or sociabilis

Eriosyce senilis

they are 'different' species when you focus on their labels but they look almost the same :shock: neohankeana v. flaviflora = pilispinus ? in my opinion they are both syn. of taltalensis, maybe neohankeana v. flaviflora is pilispinus of which flower is yellow. 30711088_2106226306325673_5809248137503...