These were at the Cave Spring Trailhead in Golden Valley, AZ. Googlemap it if you are in the area.

Sometimes when you are out looking at cactus you can't help notice other things, like the rocks. A shot that includes the environment around the subject can give more meaning to a photo.

Hybrid cactus have their fanciers. I can't think of any particular website but google things like 'Hybrid epiphyllum", "hybrid peanut cactus", etc. and you will find things. Big Picture project is more for species, your posts would probably go under General. You can upload photos dire...

I was hiking on Spirit Mountain, Nevada, and saw something round in shape on the side of a small wash. Further investigation showed the carcass of a mature barrel cactus. Growing at an angle out of the crack in the rock probably speeded up its death as gravity helped pull it down. IMG_1669r_1.jpg IM...

Cuttings can best be had on private property once you introduce yourself and explain what you are doing. Their radar is out for housebreakers. squatters, and cattle rustlers; once they see what you are doing they are glad to help. Road easements are another good area for whatever survives people, ca...

This is a well known spot famous for its annual religious pilgrimage and the short but steep hiking trail. The upper level is in pre-montane forest which is seasonally dry. The cacti are in sheltered spots, probably to resist excessive drying from the winds. I found Epiphyllum (probably costarisense...

I live in the tropics where native species are available. E. rubrocoronatum and E. thomasianum are among my favorites although I was amazed at how big E. thom grew in my poly tunnel. Even the basics like rhipsalis can be charming in hanging baskets. You might want to check out the youtube channel ht...

I have a couple growing in my yard and I will make a point to photograph the flowers this year.

http://legacy.tropicos.org/NamePage.asp ... rojectId=7

P. warszewiczii seems to be the name.

New cactus lexicon seems to be out of print, both volumes. You might browse https://exoticplantbooks.com/ https://exoticplantbooks.com/detail/?product_id=1036 Lode's site is http://cactus-aventures.com/Taxonomy_of_the_Cactaceae_ENG.html Inter-library loan is always an option-- but be prepared to sig...

Lately I have been frequenting Kew-- http://www.theplantlist.org/ and https://www.inaturalist.org/ fairly frequently.
The latter I take with a grain of salt because it is an pop publication with scientific overview so individual posts have to be scrutinized.

For print books I have Lode's, Hunt's and Anderson's main volumes. All are quite pricey, even on the used market but they are the main resources. Since the first 2 authors have passed away, it is unlikely that they will be updated. Lode is concentrating on DNA research, so it is the most current and...

Found another one growing on trees in cloud forest. I took some cuttings and hopefully it will flower this year so I have a chance to ID it. Literature says there are 3 species native to Nicaragua, E. australis, E. Pittieri, and E guatemalensis, plus possibly E maxonii.

My general plan for succulents in pots in the tropics is morning sun or equivalent and protection from rain in the rainy season to prevent root rot.

When I think of succulents philodendrons are not the first things to come to mind but this one certainly has adaptations to survive the dry season in Central America. In wetter locations it has 3 foot long leaves that can be green all year. As can be seen in the photos, it looses leaves as necessary...