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 Calicioids of Temperate Regions
0.01 (development)
Eric B. Peterson
 

Sclerophora

This genus seems closely allied to Chaenotheca, but is generally more pale in outward appearance of the ascomata.  Anatomically, the spores of Sclerophora are unpigmented as compared to Chaenotheca, though admittedly spores of Chaenotheca are often nearly as pale.

Taxa covered (6):

Key to Species

Validation script believes all taxa are included in the key(s).


  1. 1a. Spores 3 - 5μm diameter.
    1. 2a. Apothecia small (0.5 - 0.8mm). Capitulum pale brown with reddish brown, K+ violet, pruina; spores 3.0 - 3.6μm.Sclerophora peronella
    2. 2b. Apothecia tall (1.1 - 3.0), excipulum forming a collar.
      1. 3a. Apothecia pale pink to pale ochraceous, stalks reddish brown to brown, excipulum forming a distinct, white collar paraphyses covered by yelolwish red, granular crystals, K+ dark red in ascomata, spores 3.4 - 4.5μm, dark and humid situations in Southern Hemisphere and Central America.Sclerophora sanguinea
      2. 3b. Pruina on young apothecia violet red, older apothecia with yellow to brown stalks and a white pruina on the excipulum.Sclerophora amabilis
  2. 1b. Spores 4.5 - 8.5μm diameter.
    1. 4a. Pruina yellow, K-. Apothecia white, Spores 7.2 - 8.4μm.Sclerophora nivea
    2. 4b. Pruina a darker color.
      1. 5a. Violet pruina (see photo for species) on capitulum that is K-. Spores 6.5 - 8μm.Sclerophora farinacea
      2. 5b. Pruina reddish-brown, K+ violet. Spores 4.5 - 6.5μm.Sclerophora coniophaea

Species Details

Sclerophora amabilis (Tibell) Tibell
ID=176
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External Information: References: Selva & Tibell 1999.
Sclerophora coniophaea (Norman) Mattsson & Middelb.
ID=177
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External Information: References: Selva & Tibell 1999.
Sclerophora farinacea (Chevall.) Chevall.
ID=178
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Sclerophora nivea (Hoffm.) Tibell
ID=179
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Sclerophora peronella (Ach.) Tibell
ID=180
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Sclerophora peronella ascomata. With Chaenothecopsis rubescens.
Sclerophora peronella translucent stalk.
Sclerophora peronella ascospores. Note the lack of pigment relative to ascospores of Chaenotheca spp.

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Infrequent in the Pacific Northwest, although probably the most common member of the genus in the region.
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External Information: References: Selva & Tibell 1999.
Sclerophora sanguinea
ID=181
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Count of taxa = 6
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