| Holotype: Lepraria texta K. Knudsen, Elix & Lendemer |
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Description: Thallus: crustose, indeterminate, without lobes, continuous,
with radiating hyphae, well-fastened to the substrate, forming an interconnected matrix less than 1 mm
thick of prosoplectenchyma 4-5 µm in diam with thin walls and regular septation, with inter-hyphal space
lacking any evidence of free-living algae, other fungi or bacteria being present; upper surface: usnic
acid-derived green; soredia: irregularly-shaped subcorticate granules to 50 µm with multiple radiating hyphae;
medulla: lacking; hypothallus: evident in some specimens as whitish algal-free layer resembling hypothallus
of L. cacuminium; lower surface: lacking but substrate staining evident; Spot tests: K+ yellow or K-; KC+
yellow or KC-, P-; Secondary metabolites: atranorin (major or minor), usnic acid (major), zeorin (minor),
roccellic and/or angardianic acid (minor). |
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Type: USA: California: Ventura County: Santa Monica Mountains,
Party Rock, high above Carlisle Valley (National Park Service property), 34° 6' 37" N 118° 54' 22" W, 698 m,
north side of outcrop on Conejo volcanics, Knudsen 5153 w/ Rolf Muertter & Tarja Sagar, Feb. 8, 2006
(UCR-holotype; ASU, B, CANB, H, PH, UGDA-isotype) |
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Image: Rolf Muertter. |
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