Tremella_flava

<i>Tremella iduensis</i>

Tremella iduensis

Species of fungus

Tremella iduensis is a species of fungus in the family Tremellaceae. It produces yellow, cornute-frondose, gelatinous basidiocarps (fruit bodies) and is parasitic on other fungi, probably species of Hypoxylon on dead attached and recently fallen branches of broad-leaved trees. It has been recorded from Japan and China. Tremella flava, described from Taiwan, may be a synonym.[1]

Quick Facts Tremella iduensis, Scientific classification ...

Taxonomy

Tremella iduensis was first published in 1939 by Japanese mycologist Yosio Kobayasi.

Description

Fruit bodies are gelatinous, bright yellow, up to 2.5 cm (1 in) across, and branched, with cornute (horn-like) fronds. Microscopically, the basidia are tremelloid (ellipsoid, with oblique to vertical septa), 4-celled, 17 to 18 by 12 to 13 μm. The basidiospores are ovoid to ellipsoid, smooth, 8.5 to 9.5 by 7.5 to 8.5 μm.[2]

Similar species

Tremella flava was described from Taiwan as "resembling T. iduensis" but differing in the size of its basidiospores (7 to 9 by 5 to 6.5 μm) and basidia.[3] It has been suggested it may be a later synonym of T. iduensis.[1] Other yellow Tremella species are lobed or foliaceous and lack horn-like fronds.

Habitat and distribution

Tremella iduensis is a parasite on lignicolous fungi, probably species of Hypoxylon.[3] It was originally described from Castanopsis sieboldii and is found on dead, attached or recently fallen branches of broad-leaved trees.

The species is currently known from Japan and China.[4]

References

  1. [1]
    Bandoni RJ, Boekhout T (2011). Chapter 12 - Tremella Persoon (1794), in Kurtzman et al., The Yeasts (Fifth Edition). Elsevier. pp. 1567–1590. ISBN 9780444521491.
  2. [2]
    Kobayasi Y (1939). "On the genus Tremella and its allies from Japan". Science report of the Tokyo Bunrika Diagaku. 4: 1–26.
  3. [3]
    Chen C-J. (1998). Morphological and molecular studies in the genus Tremella. Berlin: J. Cramer. p. 225. ISBN 978-3-443-59076-5.
  4. [4]
    "University of British Columbia Fungal Herbarium". Retrieved 2023-05-09.
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