The Hypogymnia Species of North America

Hypogymnia hultenii

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

Overview

Synopsis: Small thallus with narrow solid lobes (mostly < 1 mm broad), lower surface deeply pock-marked, sorediate
Distribution: Coastal Scandinavia and oceanic Pacific NW of North America
Habitat: oceanic forests
Range: Eastern North America, Pacific Northwest, Pacific Northwest Immediate Coast
Abundance in North America: Locally common
Substrate: Typically
Host: Mainly conifers, occasionaly hardwoods
On Rock: Never
On Moss/Detritus/Sod: Never
Authority: (Degel.) Krog
References: Degelius (1937), Krog (1951), Miadlikowska et al. (2011)
Synonymy: Cavernularia hultenii
Hypogymnia hultenii - Habit
Habit

Vegetative Structures

Habit Appressed: Sometimes
Habit Pendulous: Never
Habit Erect to Suberect: Commonly
Size (cm): Mean: 2 SD: 1
Upper Color- White to Greenish Gray: White to greenish gray
Upper Surface Brown when Solarized: Blackish or unknown
Dark Mottles: None or rare
Black Border: Not visible
Lobes Separated: Contiguous to +/- separate
Lobe Outline: Even to nodulose
Upper Surface Texture: Smooth to weakly rugose
Branching: Variable
Budding: Occasional
Lobe Width (mm): Mean: 0.6 SD: 0.4
Lobe Tips, Axils, and/or Lower Surface Perforated: Never
Lobe Tips Perforated: Entire
Lower Surface Perforated: Entire
Cavernulae: Almost always
Thallus Texture: Cartilaginous
Medulla: Sometimes
Ceiling Color: Not applicable
Floor Color: Not applicable
Hypogymnia hultenii - Lobes
Lobes
1/6
Hypogymnia hultenii - Habit
Habit
2/6
Hypogymnia hultenii - Lower surface with cavernulae
Lower surface with cavernulae
3/6
Hypogymnia hultenii - Habit
Habit
4/6
Hypogymnia hultenii - Thallus section with cavernulae
Thallus section with cavernulae
5/6

Reproductive Structures

Soredia: Laminal capitate
   Soredia Texture: Commonly
   Soredia Terminal or Laminal: Sometimes
   Soredia Shape Lip-Shaped: Never
   Schizidia: Rarely
   Isidia: None
Lobules: Occasional
Apothecia: Rare
Hypogymnia hultenii - Soredia
Soredia
1/2
Hypogymnia hultenii - Soredia
Soredia
2/2

Chemistry