Kaernefeltia merrillii (Du Rietz) A. Thell & Goward 1996 — Overview

Brief Summary

Read full entry

Description

 Thallus: foliose, rarely subfruticose, decumbent; lobes: rather broad to narrow, c. 0.5-11.0 mm wide; apices: rounded to fusiform, eciliate; upper surface: olive-brown to greenish black, rough and occasionally ridged or foveolate, usually dull, occasionally pruinose; isidia: sometimes present, flattened; soralia and lobules: absent; pseudocyphellae: sparse, indistinct, immersed; cortex: strongly white, prosoplechtenchymatous; medulla: white, loosely packed; photobiont: a Trebouxia; lower surface: pale brown, attached by simple, black rhizines; Apothecia: frequent, marginal to laminal on thallus, at first concave, later becoming convex, pedicellate; margin: prominent, with thalloid rim; disc: imperforate, dark olivaceous brown; exciple: hyaline; epithecium: brown or brownish yellow; hypothecium: hyaline; asci: clavate, lecanoral, 8-spored; ascospores: simple, ellipsoid to broadly ellipsoid, 6-10.5 x 2.5-5 micrometer; walls: thin, hyaline, not amyloid; Pycnidia: laminal or marginal, immersed or emergent and sessile; conidia: bifusiform, 5-7 x 1 micrometer; Spot tests: all negative; Secondary metabolites: cortex with an unknown pigment, medulla with lichesterinic and protolichesterinic acids and 2-3 other low-Rf fatty acids.; Substrate and ecology: bark or wood; World distribution: temperate/boreal areas of western North America from low altitudes to alpine areas and at intermediate altitudes in central Spain; Sonoran distribution: chaarral areas of Baja California and southern California. 

Trusted

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!