The Hypogymnia Species of North America

Hypogymnia rugosa

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

Overview

Synopsis: Appressed, large, soft, and puffy, neatly dichotomously branched, mid to high elev; spot tests negative but containing hypoprotocetraric acid.
Distribution: North American endemic, BC to Oregon, inland to Montana
Habitat: cool temperate oceanic/suboceanic conifer forests
Range: Northern Rocky Mountains, Pacific Northwest
Abundance in North America: Locally common
Substrate: Typically
Host: Conifers
On Rock: Never
On Moss/Detritus/Sod: Never
Authority: (G. Merr.) Pike
References: Pike & Hale (1982)
Synonymy: None
Hypogymnia rugosa - Habit
Habit

Vegetative Structures

Habit Appressed: Almost always
Habit Pendulous: Never
Habit Erect to Suberect: Never
Size (cm): Mean: 25 SD: 12.5
Upper Color- White to Greenish Gray: White to greenish gray
Upper Surface Brown when Solarized: Blackish or unknown
Dark Mottles: Sometimes present
Black Border: Sometimes present
Lobes Separated: Contiguous to +/- separate
Lobe Outline: Even
Upper Surface Texture: Becoming rugose
Branching: Isotomic dichot.
Budding: Absent or rare
Lobe Width (mm): Mean: 3.5 SD: 0.75
Lobe Tips, Axils, and/or Lower Surface Perforated: Never
Lobe Tips Perforated: Entire
Lower Surface Perforated: Entire
Cavernulae: Never
Thallus Texture: Papery
Medulla: Almost always
Ceiling Color: Dark to grayish
Floor Color: Dark
Hypogymnia rugosa - Habit
Habit
1/8
Hypogymnia rugosa - Lobes
Lobes
2/8
Hypogymnia rugosa - Lobe cavity
Lobe cavity
3/8
Hypogymnia rugosa - Habit
Habit
4/8
Hypogymnia rugosa - Habit
Habit
5/8
Hypogymnia rugosa - Habit
Habit
6/8
Hypogymnia rugosa - Lobes
Lobes
7/8

Reproductive Structures

Soredia: None
Schizidia: Rarely
Isidia: None
Lobules: None
Apothecia: Common
Spore Length (µm): Mean: 6.4 SD: 0.25 Max: 6.9 Min: 5.9
Spore Width (µm): Mean: 5.4 SD: 0.15 Max: 5.7 Min: 5.1
Pycnidia: Common
Hypogymnia rugosa - Apothecia
Apothecia
1/2
Hypogymnia rugosa - Ascospores
Ascospores
2/2

Chemistry