The Hypogymnia Species of North America

Hypogymnia lophyrea

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, esorediate
Distribution: North American endemic, BC to California near the immediate coast.
Habitat: coastal forests
Range: Pacific Northwest, Pacific Northwest Immediate Coast
Other Diagnostics: TLC with unknown UV+Y Rf A6 C5-6, unk. Rf A4
Substrate Notes: On bark and wood, mainly conifers
Abundance in North America: Present
Substrate: Typically
Host: Mainly conifers, occasionaly hardwoods
On Rock: Never
On Moss/Detritus/Sod: Never
Authority: (Ach.) Krog
References: Degelius (1937), Krog (1951), Miadlikowska et al. (2011)
Synonymy: Cavernularia lophyrea
Hypogymnia lophyrea - 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 lophyrea - Thallus section with cavernulae
Thallus section with cavernulae
1/7
Hypogymnia lophyrea - Thallus section with cavernulae, polarized light (POL)
Thallus section with cavernulae, polarized light (POL)
2/7
Hypogymnia lophyrea - Lower surface with cavernulae
Lower surface with cavernulae
3/7
Hypogymnia lophyrea - Habit
Habit
4/7
Hypogymnia lophyrea - Thallus section with cavernulae
Thallus section with cavernulae
5/7
Hypogymnia lophyrea - Lower cortex
Lower cortex
6/7

Reproductive Structures

Soredia: None
Schizidia: Rarely
Isidia: None
Lobules: Occasional
Apothecia: Common
Spore Length (µm): Mean: 5.2 SD: 0.2 Max: 5.6 Min: 4.8
Spore Width (µm): Mean: 5.2 SD: 0.2 Max: 5.6 Min: 4.8
Pycnidia: Common
Hypogymnia lophyrea - Hymenium, polarized light
Hymenium, polarized light
1/6
Hypogymnia lophyrea - Apothecia
Apothecia
2/6
Hypogymnia lophyrea - Hymenium
Hymenium
3/6
Hypogymnia lophyrea - Apothecia pruinose
Apothecia pruinose
4/6
Hypogymnia lophyrea - Ascospores
Ascospores
5/6
Hypogymnia lophyrea - Apothecia
Apothecia
6/6

Chemistry