Plant Species of San Jacinto Mountain: Repeat photography of Ericameria parishii, Parish's goldenbush
Ericamera parishii is normally a strong fire-follower, appearing after a fire and persisting for just a few to ~twenty years. But occasionally a few plants germinate without a fire, possibly from mechanical scraping of their seed or some other cause that breaks the dormancy of the seed.
This page shows repeat photography of such a plant on Fernleaf Drive in Idyllwild. The plant is along the roadside, so its seed may have been scraped by plowing of the road.
I observed this plant in bloom for the first time in 2013, and took pictures of it every year since then, except in 2017.
I was at this site in 2012 and didn't see this plant, at least not in bloom, and so it may have been one or two years old in 2013 when it bloomed for the first time.
Fig. 1 shows pictures from 2013 to 2020 that were taken at roughly the same orientation. The picture from 2014 was taken with a different orientation and not shown in Fig. 1, but it is still linked from the test in Fig. 1 for 2014.
I used the background in the pictures from 2015 to 2020 to scale the pictures so that the growth of the plant can be seen at a glance. The 2013 picture had nothing in the background to use as a scale, so it was resized by making the inflorescence roughly the same apparent size as in the other pix.
It is difficult to determine from these pictures precisely how quickly the plant has grown, because the pictures were not always taken from the exact same position. My memory is that the plant doubled in size, primarily in width, from 2013 to 2014, and grew about one foot in height every year from 2014 to 2019.
The plant appears to be in decline in 2020.
27 August 2013
Pix from 2014 not comparable
3 September 2015
24 September 2016
(No pix taken in 2017)
21 August 2018
6 August 2019
23 August 2020
Fig. 1. Repeat photography, at approximately the same scale, of Ericameria parishii. Click on the pictures for larger versions that are not at the same scale.
Copyright © 2020 by Bruce Watts.
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Comments and feedback: Tom Chester
Updated 14 September 2020.