Search found 7395 matches
- Wed Mar 20, 2024 9:55 am
- Forum: Cacti Identification
- Topic: Need Id for this cactus
- Replies: 8
- Views: 3053
Re: Need Id for this cactus
Looks like it was originally hard grown then potted in a more nutritious soil and produced more vigorous new growth. However the new growth does not look etiolated being a nice dark green. If some plants have been grown slowly, in order to blur the old growth into more vigorous new growth, you have ...
- Sun Mar 17, 2024 10:53 am
- Forum: Cacti Identification
- Topic: Copiapoa identification III
- Replies: 2
- Views: 2282
Re: Copiapoa identification III
C. haseltoniana usually has yellowish/orange wool in the crown or areoles. As said previously it is hard to identify Copiapoa's whilst small.
http://www.llifle.com/Encyclopedia/CACT ... seltoniana
Maybe somebody who grows many from seed can help?
http://www.llifle.com/Encyclopedia/CACT ... seltoniana
Maybe somebody who grows many from seed can help?
- Sun Mar 17, 2024 10:45 am
- Forum: Cacti Identification
- Topic: Copiapoa identification
- Replies: 1
- Views: 2157
Re: Copiapoa identification
The problem is Copiapoa's as young plants often look quite different to an older plant. http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/1380/Copiapoa_cinerea#:~:text=Description%3A%20Copiapoa%20cinerea%20is%20one%20of%20the%20most,solitary%2C%20or%20slowly%20offsetting%2C%20globular%20to%2...
- Mon Mar 11, 2024 9:50 am
- Forum: General
- Topic: New Argentinian Pyrrhocactus?
- Replies: 6
- Views: 2824
- Sun Mar 10, 2024 11:54 am
- Forum: General
- Topic: Pictures of cacti next to rocks in habitat
- Replies: 9
- Views: 3013
Re: Pictures of cacti next to rocks in habitat
Some tuberous rooted cacti that grow among or under rocks or even shrubs have ev0lved an extreme form of etiolation to get their flowering heads above rocks etc for pollination. This modification is retained even if grown in pots when no rocks are present. https://bcss.org.uk/turbinicarpus-subterran...
- Sun Mar 03, 2024 5:37 pm
- Forum: General
- Topic: Pictures of cacti next to rocks in habitat
- Replies: 9
- Views: 3013
Re: Pictures of cacti next to rocks in habitat
I presume you are aware of these articles? https://link.springer.com/article/10.1007/s00442-007-0698-y https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0081513 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2701848/ https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2745...
- Sat Mar 02, 2024 11:41 am
- Forum: General
- Topic: Pictures of cacti next to rocks in habitat
- Replies: 9
- Views: 3013
Re: Pictures of cacti next to rocks in habitat
Just give me the usual picture credit and you can use what you want.
DaveW (Dave Whiteley)
DaveW (Dave Whiteley)
- Fri Mar 01, 2024 10:22 am
- Forum: Books and References
- Topic: Cactus & Succulent Review
- Replies: 0
- Views: 7523
Cactus & Succulent Review
Latest edition of free to download Cactus & Succulent Review is available here:-
https://www.cactusandsucculentreview.org.uk/
https://www.cactusandsucculentreview.org.uk/
- Thu Feb 29, 2024 10:40 am
- Forum: General
- Topic: Pictures of cacti next to rocks in habitat
- Replies: 9
- Views: 3013
Re: Pictures of cacti next to rocks in habitat
You can use any of my pictures I posted on my BCSS Travelogue. The later ones are habitat photos.
https://www.forum.bcss.org.uk/viewtopic.php?t=164681
https://www.forum.bcss.org.uk/viewtopic.php?t=164681
- Thu Feb 22, 2024 10:18 am
- Forum: General
- Topic: Is there a market for rare seed grown cacti species?
- Replies: 9
- Views: 2798
Re: Is there a market for rare seed grown cacti species?
Rarity is often a matter of opinion and can vary county to country depending what's freely available in that country. Also some species are more desirable to collectors than others, therefore a not very attractive species may in fact be quite rare but there is not a widespread market for it. Take fo...
- Tue Feb 20, 2024 5:53 pm
- Forum: Cacti Identification
- Topic: Is my plant Cephalocereus senilis or something similar?
- Replies: 12
- Views: 2911
Re: Is my plant Cephalocereus senilis or something similar?
The crown is etiolated through growing in too low light. The centre should have similar spination to the sides. If kept in good light it should improve.
- Fri Feb 09, 2024 10:25 am
- Forum: General
- Topic: Cactus Explorer
- Replies: 1
- Views: 2342
Cactus Explorer
Latest edition of free to download Cactus Explorer is now available, plus all back issues.
https://www.cactusexplorers.org.uk/journal1.htm
https://www.cactusexplorers.org.uk/journal1.htm
- Thu Feb 08, 2024 10:32 am
- Forum: Cacti Identification
- Topic: Got a cactus for gift
- Replies: 5
- Views: 2587
Re: Got a cactus for gift
Incidentally Ossy the easy way to tell a Gymnocalycium apart from many other genera is neither the buds, flower tube or fruits have any hairs or bristles on them like your Notocactus (Parodia) does. "The genus name Gymnocalycium (from Greek, "naked calyx") refers to the flower buds be...
- Wed Feb 07, 2024 11:17 am
- Forum: Cacti Identification
- Topic: Got a cactus for gift
- Replies: 5
- Views: 2587
Re: Got a cactus for gift
Agree with Nino, but probably the longest spined form of Parodia (Notocactus) mammulosa known an N. turecekianus. https://www.cactus-art.biz/schede/NOTOCACTUS/Notocactus_turecekianus/Notocactus_turecekianus/Notocactus_turecekianus.htm Notocactus mammulosus used to be split into three different speci...
- Wed Feb 07, 2024 10:42 am
- Forum: General
- Topic: Why can’t most cacti be Blue?
- Replies: 4
- Views: 3059
Re: Why can’t most cacti be Blue?
As Spence says any blue in cacti is caused by the scattering of light and not true blue pigmentation. Cacti cannot have true blue flowers either. The only apparently blue flower = Wittia (Psudorhipsalis) amazonica is caused by its textured surface scattering light as in Morpho butterflies wings and ...