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Umbilicaria crustulosa

(No common name)

Conservation Status

Population Analysis

  • For the 31,840 species in the Class Lecanoromycetes, we average 8.62 observations each in our database; for Umbilicaria crustulosa, we have 56 observations. Compared to other species in this Class, this species is somewhat common.
  • A two-sample t-test can be used to determine whether the trend in observations of Umbilicaria crustulosa is the same as the trend in observations of Lecanoromycetes. Is this species just as common, as a proportion of all observations, as it once was? The answer is no, changes in observation rate of this species significantly differ from changes in observation rate of its Class. (t=4.659, p<0.001)
  • How do observation rates of Umbilicaria crustulosa differ from those of Lecanoromycetes? To answer this, we examined the percentage of observerations for Lecanoromycetes that were observations of Umbilicaria crustulosa each year. We then correlated this percentage with observation year. If observations of Umbilicaria crustulosa are becoming more common relative to other species of Lecanoromycetes, the correlation should be positive, but if it is becoming less common, the correlation should be negative. In fact, the correlation is negative (r=-.66), with a negative slope (m = -.026), suggesting that Umbilicaria crustulosa may be in decline relative to other species of Lecanoromycetes. This correlation is statistically significant. (F = 19.13, p<.05)
  • The scatter chart to the right shows the percentage of all observations for Lecanoromycetes each year that were observations of Umbilicaria crustulosa.

Taxonomy

Unambiguous Synonyms:

  1. Gyrophora cirrhosa
  2. Gyrophora crustulosa Ach. 1927
  3. Gyrophora spodochroa
  4. Gyrophora spodochroa var. crustulosa (Ach.) Arnold
  5. Gyrophoropsis crustulosa (Ach.) Räsänen 1949
  6. Omphalodiscus crustulosus (Ach.) Schol. 1936

Notes:

Name Status: Accepted Name. Latest taxonomic scrutiny: Kirk P.M., 14-Sep-2005.

Physical Description

Distribution

Similar Species

Members of the genus Umbilicaria:

There are approximately 402 species and subspecies in this genus. Here are just 100 of them: U. crustulosa crustulosa · U. crustulosa punctata · U. hirsuta hirsuta · U. hirsuta papyria · U. aenea · U. africana · U. altaiensis · U. americana · U. americana poelt · U. angulata · U. angulata semitensis · U. angulata var. angulata · U. angulata var. compacta · U. antarctica · U. antarctica frey · U. antarctica var. antarctica · U. antarctica var. subvirginis · U. aprina (Navel Lichen) · U. aprina var. aprina · U. aprina var. halei · U. aprina var. subvirginis · U. arctica · U. arctica var. arctica · U. arctica var. diomedensis · U. asiae-orientalis · U. atropapillata · U. atropruinosa · U. atropruinosa var. atropruinosa · U. atropruinosa var. cinerascens · U. atropruinosa var. microphylla · U. atropruinosa var. pallens · U. badia · U. bigleri · U. bolusiana · U. brevis · U. brigantium · U. brigantium var. brigantium · U. brigantium var. hispanica · U. calvescens · U. canescens · U. capensis · U. carokiniana · U. caroliniana (Carolina Navel Lichen) · U. carpetana · U. cerebriformis · U. chiriquiensis · U. cinerascens · U. cinerascens f. cinerascens · U. cinerascens f. laciniata · U. cinereorufescens · U. cirrhosa · U. cirrosa · U. cirrosa f. cirrosa · U. cirrosa f. hibernica · U. cirrosa var. cirrosa · U. cirrosa var. lapponica · U. coriacea · U. corrugata f. corrugata · U. corrugata f. microphyllina · U. corrugata var. corrugata · U. corrugata var. microphyllina · U. corsica · U. corsicae · U. crassa · U. cristata · U. crustulasa · U. crustulata · U. crustulosa · U. crustulosa frey · U. crustulosa var. badiofusca · U. crustulosa var. cebennensis · U. crustulosa var. crustulosa · U. crutulosa · U. cylindica · U. cylindrica · U. cylindrica f. cylindrica · U. cylindrica f. denticulata · U. cylindrica f. exasperata · U. cylindrica f. jubata · U. cylindrica f. laciniata · U. cylindrica f. mesenteriformis · U. cylindrica f. nudiuscula · U. cylindrica f. rubescens · U. cylindrica frey · U. cylindrica var. corrugatoides · U. cylindrica var. cylindrica · U. cylindrica var. mesenteriformis · U. cylindrica var. nudiuscula · U. cylindrica var. tornata · U. decussata · U. decussata f. decussata · U. decussata f. maxima · U. decussata var. darrowii · U. decussata var. decussata · U. decussata var. gattefossei · U. decussata var. rhizinata · U. decussata var. sublaevigata · U. decussatus · U. delisei · U. dendrophora

More Info

Notes

Contributors:

Data Sources:

Accessed through GBIF Data Portal March 02, 2008:

  • Arizona State University, International Institute for Species Exploration: Arizona State University Lichen Herbarium
  • Botanic Garden and Botanical Museum Berlin-Dahlem: Lichen Herbarium Berlin
  • GBIF-Spain: Departamento de Biolog. Veg. II, Facultad de Farmacia, Universidad Complutense, Madrid: MAF-Lich
  • Natural History Museum, University of Oslo: Lichen field notes, Oslo (O)
  • Natural History Museum, University of Oslo: Lichen herbarium, Bergen (BG)
  • Natural History Museum, University of Oslo: Lichen herbarium, Oslo (O)
  • University Museums of Norway (MUSIT)

Identifiers:

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Last Revised: May 19, 2008