Arctostaphylos pungens, Mexican manzanita


This page is just a shell for now to show the voucher distribution at San Jacinto Mountain and in southern California of Arctostaphylos pungens.

Distribution at San Jacinto Mountain

The following map shows Arctostaphylos pungens locations from all vouchers for the San Jacinto Mountain area:

The vouchers were retrieved from the Consortium of California Herbaria on 10 November 2012.

In the above map, we've "painted over" a red dot at the summit of Tahquitz Peak that is from a voucher that is either incorrectly georeferenced or incorrectly identified. Only A. patula exists at or anywhere near the summit of Tahquitz Peak. If this voucher is A. pungens, it should be georeferenced at lower elevation to the south with the other voucher locations. Although the locality of this voucher says "Tahquitz Peak", this is often used to mean anyplace in the area of the referenced mountain, including its base. In this area, the highest elevation individual we've seen of this species is a very unhappy plant at the base of the South Ridge Trail.

Distribution in Southern California

The following histogram of elevations from vouchers from Los Angeles, Orange, Riverside, San Bernardino and San Diego Counties shows that Arctostaphylos pungens is a mid-elevation species, with most vouchers from 3000 to 6000 feet elevation:

For a very different histogram, see the plot for Toxicodendron diversilobum, poison oak.

The following map shows Arctostaphylos pungens locations from all vouchers:

Go to:

Copyright © 2012 by Tom Chester and Dave Stith.
Commercial rights reserved. Permission is granted to reproduce any or all of this page for individual or non-profit institutional internal use as long as credit is given to us at this source:
Comments and feedback: Tom Chester
Updated 10 November 2012.