The Hypogymnia Species of North America

Hypogymnia tubulosa

Click on Characteristic name for explanation. Click on image for larger version.

Overview

Synopsis: Suberect to erect lobes with powdery soredia coating the tips, lobes entire to sparsely perforate, with cavity white or dark; medulla K+ slow reddish brown, KC+ orange red, P-.
Distribution: China: Neimongol (f. farinosa) Wei (1991); Turkey (John 1996); European part of Russia, all of Siberia, Kamchatka, N Am (Rass. 1971); Europe, N Am, E Africa, Himalaya (Purvis et al. 1992); Canary I (Tavares 1952); Ukraine (Kondratyuk et al. 1996); Madeira (Arvidsson and Wall 1985); Morocco (Egea 1996); South Africa (Hale spec. in US); temperate W Himalayas (Awasthi 1988); Kazakhstan (Wagner & Spribille 2005, unpublished list).
Habitat: warm temperate to boreal and montane, wet to semia
Range: Central and Southern California, Southern Rocky Mountains, Eastern North America, Arctic, Subarctic, Alpine, Pacific Northwest Immediate Coast, Northern Rocky Mountains, Pacific Northwest
Other Diagnostics: The species is easily distinguished by its suberect to erect lobes with soredia coating the tips. Hypogymnia bitteri has terminal soralia but an appressed, rosette-like thallus with contiguous lobes and often an overall brownish color.
Substrate Notes: On conifers, hardwoods, both bark and wood, rarely on rock, detritus, or tundra sod
Abundance in North America: Common
Substrate: Typically
Host: Conifers and deciduous trees, both bark and wood
On Rock: Rarely
On Moss/Detritus/Sod: Rarely
Authority: (Schaer.) Hav.
References: Westberg et al. (2011)
Synonymy: None
Hypogymnia tubulosa - Habit
Habit

Vegetative Structures

Habit Appressed: Sometimes
Habit Pendulous: Never
Habit Erect to Suberect: Almost always
Size (cm): Mean: 6 SD: 3
Upper Color- White to Greenish Gray: White to greenish gray
Upper Surface Brown when Solarized: Blackish or unknown
Dark Mottles: Sometimes present
Black Border: Not visible
Lobes Separated: Separate to centrally subcontiguous
Lobe Outline: Even
Upper Surface Texture: Becoming rugose
Branching: Isotomic dichot.
Budding: Absent or rare
Lobe Width (mm): Mean: 2 SD: 0.5
Lobe Tips, Axils, and/or Lower Surface Perforated: Never
Lobe Tips Perforated: Entire
Lower Surface Perforated: Sparsely perforate
Cavernulae: Never
Thallus Texture: Cartilaginous
Medulla: Almost always
Ceiling Color: White or dark
Floor Color: White or dark
Hypogymnia tubulosa - Habit
Habit
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Hypogymnia tubulosa - Lobe cavity
Lobe cavity
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Hypogymnia tubulosa - Lower surface
Lower surface
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Hypogymnia tubulosa - Habit
Habit
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Hypogymnia tubulosa - Habit
Habit
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Hypogymnia tubulosa - Lobes
Lobes
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Hypogymnia tubulosa - Habit
Habit
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Hypogymnia tubulosa - Lobe cavity
Lobe cavity
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Hypogymnia tubulosa - Habit
Habit
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Hypogymnia tubulosa - Habit
Habit
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Reproductive Structures

Soredia: Terminal capitate
   Soredia Texture: Commonly
   Soredia Terminal or Laminal: Almost always
   Soredia Shape Lip-Shaped: Rarely
   Schizidia: Rarely
   Isidia: None
Lobules: None
Apothecia: Rare
Spore Length (µm): Mean: 6.5 SD: 0.15 Max: 6.8 Min: 6.2
Spore Width (µm): Mean: 5.1 SD: 0.05 Max: 5.2 Min: 5
Pycnidia: Sparse
Hypogymnia tubulosa - Soredia
Soredia
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Hypogymnia tubulosa - Soredia
Soredia
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Hypogymnia tubulosa - Soredia
Soredia
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Hypogymnia tubulosa - Soredia developmental sequence
Soredia developmental sequence
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Hypogymnia tubulosa - Apothecia
Apothecia
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Chemistry