Leucoagaricus lacrymans

Last updated

Leucoagaricus lacrymans
Leucoagaricus lacrymans.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Agaricaceae
Genus: Leucoagaricus
Species:
L. lacrymans
Binomial name
Leucoagaricus lacrymans
Synonyms

Leucocoprinus lacrymans T.K.A. Kumar & Manim. (2004)

Contents

Leucocoprinus lacrymans
Information icon.svg
Gills icon.png Gills on hymenium
Campanulate cap icon.svgFlat cap icon.svg Cap is campanulate or flat
Free gills icon2.svg Hymenium is free
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
 Spore print is white
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Question.pngEdibility is unknown

Leucoagaricus lacrymans is a species of mushroom producing fungus in the family Agaricaceae. [1] [2]

Taxonomy

It was first described in 2004 by the Indian mycologists T.K. Arun Kumar & Patinjareveettil Manimohan who classified it as Leucocoprinus lacrymans. [3]

In 2017 it was reclassified as Leucoagaricus lacrymans by the Chinese mycologists Zai-Wei Ge & Zhu-Liang Yang based on phylogenetic analysis. [4]

Description

Cap: 3–8.3 cm wide, starting cylindrical but truncate on the top and expanding to become campanulate to convex and finally flattening with age whilst often retaining a distinct umbo. The surface is white to creamy coloured and covered with minute, flattened (appressed) cinnamon to rusty brown to purplish brown scales which are sparser at the margins but denser towards the centre of the cap where they become more granular (granulose) or slightly velvety (velutinate). The cap margins have striations (sulcate-striate) and are entire, starting incurved before flattening with age and becoming fissile (prone to splitting slightly). The cap edges are often covered with yellow to reddish brown guttation the same as that seen on the stem. The cap flesh is white or whitish and thin (3mm thick) and discolours to a pale orange when cut or a greyish orange with longer exposure on cut surfaces. Stem: 4–12 cm tall and 5-6mm thick running almost equally along the length or tapering slightly towards the top. The surface is white or a dirty white colour and darkens to brownish with age and is velvety when young (velutinous to villose) but has some flattened fibrils when older (appressed-fibrillose). It is often covered with beads of yellow to reddish brown guttation. The interior is hollow and the base of the stem can display white mycelial cords (rhizomorphs). The membranous stem ring is located towards the top of the stem (superior). Kumar and Manimohan note the ring as being white and usually disappearing without a trace (evanescent) whilst Ge and Yang state that it is brown and persistent. Gills: Free without a collar, moderately crowded and white but aging to a yellowish white and then discolouring reddish with age or upon drying. They are thin (up to 4mm wide) and may bulge in the middle (ventricose). The gills are of two or three different lengths and the edges are finely fringed and may be tinted greyish on older specimens. Smell: Indistinct. Spore print: White. Spores: Ellipsoidal to broadly ellipsoidal when viewed from the side and ellipsoidal, ovoid or subglobose front on. They are hyaline and smooth with a distinct germ pore. Dextrinoid. 5-13 x 4.5-11μm. Basidia: 4 spored. [3] [4]

Habitat and distribution

The specimens studied by Kumar and Manimohan were collected in Kerala State, India and were found growing on soil and decaying leaf litter around the base of coconut trees where they were solitary or growing in clusters. [3] Ge and Yang not that the species grows in tropical forests and is known from India and China. [4]

Etymology

The specific epithet lacrymans derives from Latin and means weeping, in reference to the guttation this species presents with. [3]

Similar species

Leucocoprinus zelanicus is noted as being similar however is distinguished by the smooth stem, the lack of guttation on the cap and stem as well as microscopic differences including a smaller spore size. [5]

Related Research Articles

<i>Leucocoprinus cepistipes</i> Species of fungus

Leucocoprinus cepistipes, is a species of fungus in the family Agaricaceae. It is typically found on wood debris, such as wood chips but may also grow in potted plants or greenhouses. Typical characteristics include a fine-scaled bell-shaped cap, a partial veil, and a tendency to bruise a yellow to brown when handled.

<i>Chlorophyllum hortense</i> Species of fungus

Chlorophyllum hortense is a species of agaric fungus in the family Agaricaceae.

<i>Leucoagaricus badhamii</i> Species of fungus

Leucoagaricus badhamii is a species of fungus in the family Agaricaceae and genus Leucoagaricus. The flesh of this mushroom turns blood red when cut or bruised, hence its common name of blushing dapperling. These damaged areas may eventually turn brown or black and likewise the mushroom may discolour brown or black with age. All parts of the flesh display red staining aiding in identification.

Leucocoprinus flavescens is a species of mushroom-producing fungus in the family Agaricaceae.

<i>Leucoagaricus meleagris</i> Species of fungus

Leucoagaricus meleagris is a species of fungus in the family Agaricaceae.

Leucocoprinus acutoumbonatus is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus holospilotus is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus delicatulus is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus munnarensis is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus pusillus is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus muticolor is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus velutipes is a species of mushroom producing fungus in the family Agaricaceae.

<i>Macrolepiota zeyheri</i> Species of fungus

Macrolepiota zeyheri is a species of mushroom producing fungus in the family Agaricaceae. In the Kilendu dialect it is known as djilo and in the Kilur dialect it is called n'volo mighom.

Leucocoprinus venezuelanus is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus viridiflavus is a species of mushroom producing fungus in the family Agaricaceae. It may also be known as Leucoagaricus viridiflavus.

Leucocoprinus viridiflavoides is a species of mushroom producing fungus in the family Agaricaceae. It may still be known as Leucoagaricus viridiflavoides.

Leucocoprinus antillarum is a species of mushroom producing fungus in the family Agaricaceae.

Leucocoprinus microlepis is a species of mushroom producing fungus in the family Agaricaceae.

Leucoagaricus griseosquamosus is a species of mushroom-producing fungus in the family Agaricaceae.

<i>Leucoagaricus croceovelutinus</i> Species of fungus

Leucoagaricus croceovelutinus is a species of mushroom-producing fungus in the family Agaricaceae.

References

  1. ↑ "Species fungorum - Leucoagaricus lacrymans (T.K.A. Kumar & Manim.) Z.W. Ge & Zhu L. Yang, in Yang & Ge, Mycosystema 36(5): 547 (2017)". www.speciesfungorum.org. Retrieved 2022-07-19.
  2. ↑ "Mycobank Database - Leucoagaricus lacrymans".
  3. 1 2 3 4 Kumar, T. K. Arun; Manimohan, Patinjareveettil (2004). "A new species of Leucocoprinus from India". Mycotaxon. 90 (2): 393–397 – via www.researchgate.net.
  4. 1 2 3 Yang, Zhu-Liang; Ge, Zai-Wei (2017). "Six new combinations of lepiotaceous fungi from China". Mycosystema. 36 (5): 542–551 – via www.manu40.magtech.com.cn.
  5. ↑ Arun Kumar, T. K.; Manimohan, P. (2009-07-16). "The genera Leucoagaricus and Leucocoprinus (Agaricales, Basidiomycota) in Kerala State, India". Mycotaxon. 108 (1): 385–428. doi: 10.5248/108.385 . ISSN   0093-4666.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.