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Mammillaria bertholdii (aka what are these?)
  
 
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p.1 #1 · p.1 #1 · Mammillaria bertholdii (aka what are these?)


This is one of the extreme forms of pectinate (comb-like) spines on a cactus I have seen, The model:

[url]https://cdn0.rubylane.com/shops/857424/A15-08-01.1L.jpg?14[/url] (Copy and paste to avoid copyright issues).

I refer to the size of them, as well as the way they are held away from the stem on such long tubercule:

http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artjan07/bj-cacti.html

Brian’s was the closest guess. The flowers are borne at the bases of the tubercules, not on their tips. What looks like pollen is something else, fine wooly material of plant origin.

This is a cactus with pectinate spines on the areoles:

https://en.wikipedia.org/wiki/Areole

http://www.llifle.com/Encyclopedia/CACTI/Family/Cactaceae/32468/Mammillaria_bertholdii

Mammillaria bertholdii is new species described by Thomas Linzen in 2014:

http://mammillaria.forumotion.net/t2111-mammillaria-bertholdii-spec-nova

I obtained the plant this week. It is finger-tip size, grown as a graft, which accelerates the growth, perhaps exaggerating the spread of the tubercules.

A radio news item yesterday said that succulents are becoming very fashionable in Europe, with growers struggling to meet the demand. Cacti are in the family Cactaceae, whereas other succulents occur in numerous plant families. There is no such thing as “a cacti”, a term used by the uniformed, not only for “a cactus”, the correct form (you wouldn’t say “a mice” would you?), but also to any succulent.

Olympus EM-1, Oshiro 2:1 60mm macro, triple TTL off-camera flash.

The stereos are crosseye.

Harold




Harold Gough 2017





Harold Gough 2017





Harold Gough 2017





Harold Gough 2017





Harold Gough 2017





Harold Gough 2017





Harold Gough 2017





Harold Gough 2017




Sep 10, 2017 at 10:39 AM







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