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 Mammillaria dioica in the desert

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agrippa



Number of posts : 41
Location : Canada
Registration date : 2012-02-25

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PostSubject: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeTue Dec 31, 2013 12:40 am

Want to show you some photos from my trip to Anza-Borrego Desert State park, California. It was mid October and not a blooming time of course. I stopped several times along the Hwy 78 and looked for these plants between rocks and dead plants.

Mammillaria dioica in the desert 10415923066_7c354bd79c_c

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Mammillaria dioica in the desert 10465944254_6401649214_c
This one is branching or dividing?

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Mammillaria dioica in the desert 10466115513_165fe6fc9b_c

Mammillaria dioica in the desert 10466213006_85f7b4f4e8_c

Mammillaria dioica in the desert 10466210306_06800c6734_z

Mammillaria dioica in the desert 10466208106_07c378fde8_c

Mammillaria dioica in the desert 11657447275_2bb0f457ab_c

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Mammillaria dioica in the desert 10465939656_f4404e40da_c


Last edited by agrippa on Wed Jan 01, 2014 7:00 pm; edited 2 times in total
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agrippa



Number of posts : 41
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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeTue Dec 31, 2013 12:58 am

Mammillaria dioica in the desert 10466196035_7bccd55102_c

I saw plants with unripe fruits, it takes half a year or more to htese to ripen.

And many mammillarias hiding in the shade of Ferocactus cylindraceus plants.

Mammillaria dioica in the desert 10465950664_3f81b9b3b3_z

Mammillaria dioica in the desert 10465951786_2165703dea_z

Mammillaria dioica in the desert 11657709273_fa67f2aa86_c
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agrippa



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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeWed Jan 01, 2014 7:57 pm

Among others I found several of Mam. tetrancistra plants also. One of it was hiding behind a Ferocactus again.

Mammillaria dioica in the desert 11691790206_70367bd3ae_c

Mammillaria dioica in the desert 11691022065_9a9cb4a678_c

Others two, these close to Cylindropuntia branch, were next to a similar size seedling of M. doica and I did not differed them at first.

Mammillaria dioica in the desert 11692556924_cf78067a28_c

Mammillaria dioica in the desert 11692427843_73b303c0f1_c

There is a green fruit at the bigger one, from the first blooming perhaps.
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woltertenhoeve



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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeSat Jan 04, 2014 9:24 pm

Nice habitat photos! But could it not be that some of the dioicas from the first set of photos are actually tetrancistras?
I find it difficult to distinguish between them because they are not in flower, tetrancistra should have 30 - 46 radial spines (but in Sonora 18 to 20), dioica 11 - 22 (all according to Pilbeam's book). If I am correct, the Anza-Borrego park harbours both species. The seeds should betray the real tetrancistra, because of the corky appendix.

Wolter ten Hoeve, The Netherlands.
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agrippa



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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeSat Mar 01, 2014 6:46 pm

Well, even the main distinguish features of M. tetrancistra (flowers, roots, ripe fruits) were hidden at the time I did those photos, I think I could difference plants of both species found there. M. tetrancistra has several dark, almost black, long but soft hooked centrals per areole and many white radials. The bodies of seedlings I found were soft also. Dioicas I found in that desert had lighter (just upper half was brown) centrals, just one hooked per areole, and mostly less than 15 radials. The bodies staid more robust and fruits had flower remnants at the tips (normally missing at M. tetrancistra's red fruits).

I agree that many features may overlap if taking entire species populations of these two mammillarias. But after some observations, zooming and practice it's possible to determine these two cacti in Anza Borrego. I would go again there in more bloom-likeable time there, even it's different for them, as I already know the localities...
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Chris43
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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeSun Mar 02, 2014 4:12 pm

Nice photos, this was one of the first Mamms I saw, Also along HW78, back in 1992. I didn't have long to stop, but I remember the samazement St seeing whole hillsides of Ferocacti. The M. dioica were quite pulled down, but in flower. It was Feb. I may not have recognised M. tetrancistra back then, so will have to check my few colour slides.

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agrippa



Number of posts : 41
Location : Canada
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PostSubject: Re: Mammillaria dioica in the desert   Mammillaria dioica in the desert Icon_minitimeThu Mar 06, 2014 3:57 am

@Chris43 wrote:
Nice photos, this was one of the first Mamms I saw, Also along HW78, back in 1992. I didn't have long to stop, but I remember the samazement St seeing whole hillsides of Ferocacti. The M. dioica were quite pulled down, but in flower. It was Feb. I may not have recognised M. tetrancistra back then, so will have to check my few colour slides.
Thanks, Chris. These hillsides of Ferocacti are amazing there, indeed. It takes some time to learn how to find small mammillarias among them.

Mammillaria dioica in the desert 10415809976_889c2b730e_c
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