Thelephora palmata

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***Thelephora palmata*** (commonly known as the **stinking earthfan** or the **fetid false coral**) is a species of clavarioid fungus in the family Thelephoraceae. The fruit bodies are leathery and coral-like, with branches that are narrow at the base before widening out like a fan and splitting into numerous flattened prongs. The wedge-like tips are whitish when young, but darken as the fungus matures. The common names of the fungus refers to its pungent odor, likened to fetid garlic. A widely distributed but uncommon species, it is found in Asia, Australia, Europe, North America, and South America, where it fruits on the ground in both coniferous and mixed forest.

## Taxonomy

The species was first described in 1772 by Italian naturalist Giovanni Antonio Scopoli, as *Clavaria palmata*. Elias Fries transferred it to the genus *Thelephora* in 1821. The species has several synonyms, resulting from several generic transfers in its taxonomic history, including *Ramaria* by Johan Theodor Holmskjold in 1790, *Merisma* by Christian Hendrik Persoon in 1822, and *Phylacteria* by Narcisse Théophile Patouillard in 1887. Other historical synonyms are *Merisma foetidum*, published by Christian Hendrik Persoon in 1797, and Pier Andrea Saccardo's 1888 *Clavaria schaefferi*. Persoon also published a species with the name *Thelephora palmata* in 1822, but because the name was already in use, it is an illegitimate homonym; this species is now known as *Thelephora anthocephala*.

Despite its coral-like appearance, *Thelephora palmata* is closely related to some fungi with a distinctly bracket-like appearance, such as *T. terrestris* and *T. caryophyllea*. The specific epithet *palmata* is derived from Latin, and means "having the shape of a hand". It is known by the common names "stinking earthfan" and "fetid false coral". Samuel Frederick Gray called it the "stinking branch-ear" in his 1821 work *A Natural Arrangement of British Plants*.

## Description

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The fruit body of *T. palmata* is a coral-like tuft that is repeatedly branched from a central stalk, reaching dimensions of Template:Convert tall. The branches of the fruit body end in spoon- to fan-shaped tips that are frequently fringed or grooved. The branches of the fruit body are initially whitish in color, but gradually turn gray to lilac-brown in maturity; the tips, however, remain whitish, or paler than the lower parts. The flesh is tough and leathery. The hymenium (fertile, spore-bearing tissue) is amphigenous, that is, it occurs on all surfaces of the fruit body.

The odor of the fruit body is quite unpleasant, resembling fetid garlic, "old cabbage water", or "overripe cheese". It has been called "a candidate for stinkiest fungus in the forest". The unpleasant odor intensifies after drying. Fruit bodies are not edible.

 File:Thelephora palmata 78336.jpg
In deposit, the spores are purple-brown to brown. Viewed with a microscopic, the spores appear purple, angular with lobes, and warted, with fine spines measuring 0.5–1.5 µm long; the overall dimensions of the elliptic spores are 8–12 by 7–9 µm. They contain one or two oil drops. The basidia (spore-bearing cells) measure 70–100 by 9–12 µm, and have sterigmata that are 2–4 µm thick by 7–12 µm long. The flesh stains deep blue when a drop of potassium hydroxide solution is applied. The fungus contains the pigment thelephoric acid.

*Thelephora anthocephala* is somewhat similar in appearance, but can be distinguished by branches that taper upward, branch tips that are flattened (instead of spoon-like), and the lack of a fetid odor. The North American species *T. vialis* has smaller spores and a more variable color. Darker *Ramaria* species are distinguished by their non-leathery flesh texture and pointy branch tips.

## Habitat and distribution

*Thelephora palmata* is an ectomycorrhizal species, forming mutualistic associations with conifers. Fruit bodies grow singly, scattered, or in groups on the ground in both coniferous and mixed forest and grassy fields. A preference has been noted for moist ground, and locations along woodland paths. An uncommon species, fruit bodies can be difficult to see because they blend well into their surroundings.

The species is found in Asia (including China, Iran, Japan, Siberia Turkey, and Vietnam), Europe, North America, and South America (Brazil and Colombia). It has also been recorded from Australia and Fiji. Fruit bodies are consumed by the springtail species *Ceratophysella denisana*.

## Uses

Fruit bodies of *Thelephora palmata* can be used for mushroom dyeing. Depending on the mordant used, colors ranging from blackish brown to dark grayish green to greenish brown can be obtained from the dyeing process; without a mordant, a light-brown color is produced.

## References

1. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Scopoli 1772`
2. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Fries 1821`
3. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Holmskjold 1790`
4. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Persoon 1822`
5. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Patouillard 1887`
6. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Persoon 1797`
7. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Saccardo 1888`
8. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `urlFungorum: Thelephora palmata`
9. ↑ 9.0 9.1 9.2 9.3 9.4 9.5 9.6 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Roberts 2011`
10. ↑ 10.0 10.1 10.2 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Rea 1922`
11. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Phillips 2006`
12. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Gray 1821`
13. ↑ 13.0 13.1 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Bessette 1997`
14. ↑ 14.0 14.1 14.2 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Ammirati 2009`
15. ↑ 15.0 15.1 15.2 15.3 15.4 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Arora 1986`
16. ↑ 16.0 16.1 16.2 16.3 16.4 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Bessette 2001`
17. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Corner 1968`
18. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Glasby 1991`
19. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Burt 1914`
20. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Zhishu 1993`
21. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Saber 1987`
22. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Tsujino 2009`
23. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Burt 1931`
24. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Sesli 1999`
25. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Kiet 1998`
26. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Bononi 1984`
27. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Henao 1989`
28. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `ICAF`
29. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Gibbs 1909`
30. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Nakamora 2010`
31. ↑ Cite error: Invalid `<ref>` tag; no text was provided for refs named `Mounter 1997`

## External links

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