There are a few things that distinguish v. greggii from v. transmontanus... greggii: Earlier and gradual flowering period (April-May) compared to typical mid-to-late June and synchronous flowering of var. transmontanus. Larger stems Smaller flowers Habitat- high elevations [1150 to 1290 m] in Chihua...

Ferocactus alamosanus Sonora, Mexico

...Pilosocereus alensis

http://www.erikenderson.com/Galleries/C ... ensis.html

R

Additional photos would help, particularly if taken at ca. 90 degrees. M. heyderi and M. standleyi are similar, but are usually distinguishable on the basis of gestalt and latitudinal and geographic distribution (the two are usually not sympatric). The M. standleyi complex is thought to be of tropic...

Daiv,

My knowledge is restricted to the northwestern region.

R

Could be a grahamii or two in there, however, swinglei is quite variable - much like grahamii.

R

It's probably pubescens. In Sonora, it's found in subtropical situations, much like the area you were in around Moctezuma.

Mammillaria swinglei

Ferocactus emoryi

Fouquieria macdougalii


R

Mammillaria grahamii (syn. oliviae) white flowered tree = Ipomoea arborescens Mexican blue oak (Quercus oblongifolia) Mammillaria standleyi complex Mammillaria grahamii Agave parviflora Echinocereus pseudopectinatus (bristolii is an endemic with a highly restricted range) Mammillaria grahamii Fouqui...

Mammillaria swinglei
F. emoryi

lizard= Zebra-tailed lizard (Callisaurus draconoides)

R

I emailed him last week at administrator@erikenderson.com without a problem. I asked him about the idenitifcations you questioned and he got back to me. He did say that he knew that the mainiae was wrong, but that the others were right. As an aside, I used to work at a nursery in Tucson and spoke wi...

They have if you believe this:
http://www.erikenderson.com/Galleries/C ... meris.html

I emailed him at the address shown on his site and let him know about the ID's.

R

This site has many images of rarely photo'd cac and suc from AZ and Sonora.

http://www.erikenderson.com/Galleries/C ... index.html

R