Hypogymnia schizidiata
island tube lichen
(c) Ken-ichi Ueda, some rights reserved (CC BY) · licence
Family: Parmeliaceae
Conservation status: CNPS 1B.3
Hypogymnia schizidiata (island tube lichen) is a California plant in the Parmeliaceae family.
island tube lichen is a rare (CNPS 1B.3) lichen found in coastal regions of California. This pale grayish-white lichen grows as a delicate, branching tube-like structure with distinctive lobed and perforated thallus segments. Forming intricate, complex networks on tree bark and rock surfaces, it typically develops elongated, hollow tube-like extensions that branch and interconnect. Its thallus has characteristic pseudocyphellae (small pores) and a fragile, almost translucent texture that allows light to pass through its delicate membrane. When mature, the lichen can form extensive, interconnected colonies that create complex, three-dimensional structures on its substrate.
Identification and appearance
Key characters: Differentiators are not available at this time.
Conservation status
CNPS 1B.3
How to tell it apart
Differentiators are not available at this time.
Frequently asked questions
What plant family does Hypogymnia schizidiata belong to?
Hypogymnia schizidiata is in the Parmeliaceae family, genus Hypogymnia.
Is Hypogymnia schizidiata rare or endangered?
Hypogymnia schizidiata carries California Rare Plant Rank 1B.3, state rank S2.
Related species
Other California species in the same genus, family, or bioregion.
Sources: CDFW CNDDB
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.