Deciduous row (Tricholoma frondosae)
- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Agaricales (Agaric or Lamellar)
- Family: Tricholomataceae (Tricholomaceae or Ordinary)
- Genus: Tricholoma (Tricholoma or Ryadovka)
- Species: Tricholoma frondosae (Deciduous row)
- Aspen row
- Tricholoma equestre var. populinum
The hat is 4-11 (15) cm in diameter, in youth it is conical, bell-shaped, at the age of prostrate with a wide tubercle, dry, sticky in high humidity, greenish-yellow, olive-yellow, sulfur-yellow. The center is usually densely covered with yellow-brown, reddish-brown, or greenish-brown scales, the number of which decreases towards the periphery, disappearing. Scale may not be as pronounced in color for fungi growing under foliage. The edge of the cap is often curved, at age it can be raised, or even curled up.
The pulp is white, perhaps slightly yellowish, the smell and taste are soft, mealy, not bright.
Plates from medium frequency to frequent, notched-accrete. The color of the plates is yellow, yellow-greenish, light green. With age, the color of the plates becomes darker.
Spore powder is white. Spores are ellipsoidal, hyaline, smooth, 5-6.5 x 3.5-4.5 μm, Q = (1.1) 1.2… 1.7 (1.9).
Stem 5-10 (up to 14) cm high, 0.7-2 (up to 2.5) cm in diameter, cylindrical, often widened towards the base, smooth or slightly fibrous, pale yellow, greenish-yellow to sulfur-yellow.
Deciduous row grows from August to September, rarely in October, forms mycorrhiza with aspen. According to unconfirmed reports, it can grow with birches.
According to the data of phylogenetic studies , it turned out that the previously made finds of this species belong to two well-separating branches, which probably suggests that two species are hidden behind this name. In this work, they are called “Type I” and “Type II”, differ morphologically by the size of the spores and the pallor of color. Probably, the second type can be distinguished in the future as a separate form.
- Green row (Tricholoma equestre, T.auratum, T.flavovirens). Close view. Previously, the deciduous Ryadovka was considered its subspecies. It is distinguished, first of all, by its confinement to dry pine forests, it grows later, more squat, and its cap is less scaly.
- Spruce row (Tricholoma aestuans). Outwardly, it is a very similar species, and, given that both are found in spruce-aspen forests at the same time, it is easy to confuse them. The main difference between the species is the bitter / pungent flesh of spruce, and its attachment to conifers. Its cap is less scaly, slight scaling appears only with age, and also turns brown with age. The pulp may have pink tints.
- Ulvinen's row (Tricholoma ulvinenii). Very similar morphologically. This species is poorly described, however, it grows under the pine trees, thus, usually, it does not overlap with the deciduous Ryadovka in the biotope, it has paler colors, and an almost white leg. Also, this species has problems with two different branches identified by phylogenetic studies.
- Joachim's row (Tricholoma joachimii). Lives in pine forests. It is distinguished by whitish plates and a pronounced scaly leg.
- The row is different (Tricholoma sejunctum). Differs in dark green-olive tones of the cap, white plates, radial fibrous, not scaly cap, white leg with greenish spots.
- Row olive (Tricholoma olivaceotinctum). Differs in dark, almost black scales, and whitish plates. It lives in similar places.
- Melanoleuca slightly different (Melanoleuca subsejuncta). It differs in dark green-olive tones of the cap, less significantly present than in Ryadovka, which is distinguished by white plates, a non-scaly cap, and a white leg. Previously, this species was also listed in the genus Tricholoma, as Ryadovka slightly different.
- The row is green-yellowish (Tricholoma viridilutescens). Differs in dark green-olive tones of the cap, white plates, radial fibrous, not scaly cap, with dark, almost black fibers.
- The row is sulfur-yellow (Tricholoma sulphureum). It differs in a non-scaly cap, a nasty smell, a bitter taste, yellow flesh, darker at the base of the leg.
- Row toad (Tricholoma bufonium). According to phylogenetic studies, it most likely belongs to the same species as Ryadovka sulfur-yellow. Microscopically, it does not differ from it. Differs from Ryadovka deciduous, like R., sulfur-yellow, not scaly cap, nasty smell, bitter taste, yellow pulp, darker at the base of the leg, and pink shades of the cap.
- Row overhead (Tricholoma arvernense). Its difference is confined to pine forests, radial fibrous cap, almost complete absence of bright green tones in the cap (they are olive), white leg and white plates.
- Green-colored row (Tricholoma viridifucatum). It is distinguished by a non-scaly, radially fibrous cap, white plates, a more squat mushroom. According to some reports, it is confined to hard tree species – oak, beech.
Deciduous ryadovka is considered a conditionally edible mushroom. In my opinion, even very tasty. However, according to some studies, poisonous substances that destroy muscle tissue were found in a green tea similar to it, respectively, and this species, as close to it, may contain them, which has not been proven at the moment.
Literature Used 1. Heilmann-Clausen, J. et al. “Taxonomy of Tricholoma in Northern Europe Based on ITS Sequence Data and Morphological Characters.” Persoonia: Molecular Phylogeny and Evolution of Fungi 38 (2017): 38–57. PMC. Web. 3 Sept. 2018. 2. Henning Knudsen (Editor), Jan Vesterholt “Funga Nordica (2-Volume Set) [English]: Agaricoid, Boletoid, Clavarioid, Cyphelloid and Gastroid Genera”, 2012. 3. Moukha, Serge, Cyril Férandon, Erika Beroard , Jacques Guinberteau, Benoît Castandet, Philippe Callac, Edmond Creppy, and Gérard Barroso. “A Molecular Contribution to the Assessment of the Tricholoma Equestre Species Complex.” Fungal Biology 117, no. 2 (2013): 145–55. doi: 10.1016 / J.FUNBIO.2013.01.003. 4. Materials of the site “Société Tarnaise de Sciences Naturelles”: http://www.sotascinat.org/ 5. Materials of the site “Mushrooms of the Novosibirsk Region”: https://mycology.su/