Dasylirion ?

[turtlewalker34205]

I think this is a Dasylirion but which one. Can anyone ID it.
Does Dasylirion go under agavaceae?


Thanks Len


http://home-and-garden.webshots.com/...64494108TfRSta

[agavegreg]

Yes that is a Dasylirion, and looks a bit like either D. acrotrichum or D. miquihuanensis, but hard to tell from the photo. Are the leaves bluish or green?

Greg

[turtlewalker34205]

Green, and I grow it very hard.

[Mayahuel]

Hi to all,

Do you know if a publication on the systematic of Dasylirion exists ? That will be very helpfull to determinate some garden specimens.

Gérard

[agavegreg]

David Bogler did his Doctoral dissertation on Dasylirion. I believe he was at UT in Austin. It has not been published as far as I know.

[Nick PGP]

I can see no photo...

[Allen Repashy]

Not sure what happened. The photo was removed from the member gallery for some reason by the poster.

[palmbob]

Here's a link to my own simplistic article on Dasylirions... but at least it allows you to look at a variety of species that fit this plant (plant is too young, in other words, to go out on a limb I think).

http://davesgarden.com/guides/articles/view/1367/

[agavegreg]

thanks for the link to the nice Dasylirion article. In his dissertation, Bogler decided that the plant that has been known forever as D. longissimum is more correctly called D. quadrangulatum due to the complications of nomenclature and type specimens. There are actually two distinct species that have quadrangulate (4-sided) leaves, with D. quadrangulatum being the northern one, occuring in southern Tamaulipas and Nuevo Leon and D. treleasei being the more southern one, occuring in San Luis Potosi, Hidalgo and Queretaro.

[Paul S]

Greg - I'm 99.9% certain that Bogler published an addendum changing the name of D. treleasei to longissimum but cannot for the life of me find my reference to it. Anyone any idea?

Edit - here is a sort of link to it:

http://www.springerlink.com/content/q584054r76319q34/

[agavegreg]

Thanks Paul,

I'll see if I can get a copy of that article and see what he has to say. I've always fought the concept of losing the name D. longissimum, and it's interesting to see that Bogler apparently has changed his mind somewhat.

As I recall, he indicated that the "type" specimen of D. longissimum was from an unspecified locality while the "type" specimen of D. quadrangulatum came from near Tula in Tamaulipas, and Bogler decided to toss out D. longissimum and create D. treleasei for those plants from further south.

I'm curious to know the reason for now (from the 1998 article) making D. longissimum var. treleasei.

Greg

[Allen Repashy]

Does anybody have contact information for Bogler and some of the recent stateside authors. It would be nice to invite them to the Agave Summit II!

Allen

[Mayahuel]

Hi to all, thank you for all this informations about Dasylirion. Please excuse my silence I was absent during some times