Xanthoparmelia mexicana (Gyelnik) Hale 522721

Description:

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. English | español | français | italiano | македонски | മലയാളം | português | +/−. 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 copyright tag is still required. See Commons:Licensing. English | español | français | italiano | македонски | മലയാളം | português | +/−. Author: : This image was created by user J-Dar at Mushroom Observer, a source for mycological images.You can contact this user here. English | español | français | italiano | македонски | മലയാളം | português | +/−.