Silver Dollar Plant (Dudleya brittonii)

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palmbob Acton, CA(Zone 8b) Jun 21, 2011

Silver Dollar Plant
Dudleya brittonii

blooming in late spring, southern California

Post #8644695

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Baja_Costero Baja California, Mexico(Zone 11) Feb 21, 2015

I'm wondering if this is not Dudleya brittonii but a hybrid of some sort. The flowers are really yellow and the rosettes are really small, especially for their apparent age and the season. If that's one plant then it's extra weird because I don't think the white form is known to branch.

Post #10026410

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palmbob Acton, CA(Zone 8b) Feb 21, 2015

could be, but planted in Santa Barbara botanical garden where the biologists seem to really know their stuff. It is a very different climate than what this species normally grows under.. my Dudleya brittoniis in my garden are 3-4x larger, rarely sucker and do have different flowers� could be a hybrid, though. They have about 20 different species in this garden

Post #10026466

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Baja_Costero Baja California, Mexico(Zone 11) Feb 21, 2015

In my experience D. brittonii does not sucker (branch from the base). Rather the growth point divides and new heads form dichotomously, but only in individuals from the southern part of the plant's range (where the white form is not found). In Paul Thomson's Dudleya book he notes that he never saw a branched (white) brittonii.

Other Dudleyas (eg. candida) seem to branch in both ways. Small point but it makes a world of difference when you're trying to extract a cutting for propagation, and it may actual be useful for identification purposes.

Post #10026482

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Baja_Costero Baja California, Mexico(Zone 11) Feb 21, 2015

Here's what I was talking about (habitat picture from the southern end of the plant's range).

http://davesgarden.com/guides/pf/showimage/370425/