Description: Xanthoparmelia mexicana (Gyelnik) Hale Image location: Santa Barbara Co., California, USA Abundant on sandstone boulders in open sunny aspects with surrounding coast live oak (
Quercus agrifolia). Light yellow green thallus abundant on roadside boulder. No apothecia or soredia, isidia abundant. Thallus light tan below, no rhizines near lobe tips. Medulla white, K+Y turning dark red. Co-occurs with
Xanthoparmelia lineola.
Xanthoparmelia plittii and other species that are isidiate with light lower thallus color, large overall size and K+ positive reaction differ from Xanthoparmelia mexicanaby medulla chemistry, with X. plittii and others having a K+Y turning orange (Norstictic or Stictic acids) rather than red (Salazinic acid). Used references: Nash Sonoran Flora
: For more information about this, see the
observation page at Mushroom Observer.
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+/−. Date: Taken on 23 May 2015. Source:
: This image is
Image Number 522721 at
Mushroom Observer, a source for mycological images. This tag does not indicate the copyright status of the attached work. A normal
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+/−. Author:
: This image was created by user
J-Dar at
Mushroom Observer, a source for mycological images.You can contact this user
here.
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