Bush-mallow Challenge 4 - Parish's bush-mallow

Parish's bush-mallow (Malacothamnus parishii) is known only from its type collections from July 20th 1895 in the vicinity of San Bernadino, CA at an altitude of 1000-1500ft. It is presumed extinct as it hasn't been recorded since then and as the majority of the San Bernadino area is now developed.

This may be a distinct taxon or it may just be a form of the common Malacothamnus fasciculatus. The main distinguishing characteristic from Malacothamnus fasciculatus is the leaf shape being not very lobed and having parallel sides. The red lines denote this in the following image of a type specimen.

Below are scans of two type specimens:

Larger version here).


Larger version here).

As with all bush-mallows, relatively recent burn areas are the best place to look. Here is a map of recent burns in the San Bernadino area. Follow this link for an interactive map.

Here is a list of all collections from the same collector and day. All I can deduce from this is that he visited a wet area that day, but the Malacothamnus might not be from the wet area. If the collection numbers are in order, there is a fire follower in-between wetland taxa, so these may all be from near the same area. The Malacothamnus collection is flanked by dry-land taxa.

See also my post here on what to focus on if you want to be able to ID a bush-mallow from photos.

Posted by keirmorse keirmorse, March 07, 2018 17:18

Comments

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wow, neat. I probably won't be in those areas any time soon but if I am out that way i will keep an eye out

Posted by charlie almost 2 years ago (Flag)
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Seriously box-y leaves. It would be cool to find one if I were in the area.

Posted by ksabo almost 2 years ago (Flag)
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That would be cool to find some of these again but its like looking for a needle in a haystack. Good to get started though.

Sometimes old seed banks get exposed by landslides etc so there's hope. Similar to how the Mt Diablo Buckwheat was rediscovered and found not to be extinct.

https://baynature.org/article/the-mount-diablo-buckwheat-one-year-later/

Posted by ezeemonee almost 2 years ago (Flag)

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