Parvixerocomus aokii

Parvixerocomus aokii
	Parvixerocomus aokii in Japan
Systematics
Class :	Agaricomycetes
Order :	Boletales (Boletales)
Subordination :	Boletineae
Family :	Boletaceae (Boletaceae)
Genre :	Parvixerocomus
Type :	Parvixerocomus aokii
Scientific name
	Parvixerocomus aokii
	( Hongo ) G. Wu , NK Zeng & Zhu L. Yang

Parvixerocomus aokii is a species of fungus from the family of Dickröhrlingsverwandten (Boletaceae).

features

Macroscopic features

The hat is hemispherical to flattened and reaches a diameter between 1.5 and 2 centimeters. The surface of the hat is a bit felty, dry and rarely cracked. It has an orange-red to vivid red color. The flesh is pale yellow to light yellow, 2 to 4 millimeters thick and turns dark blue to black blue if damaged. The hymenophore , i.e. the tube-bearing part of the hat, is only slightly sloping (subdecurrent). It is light yellow to yellow in color and also turns dark blue when injured. The tubes are almost round to irregular, 1 to 2 millimeters in diameter and up to 2 millimeters long. The handle is 1.2 centimeters long and 0.2 centimeters thick and has a walnut shape. It is orange-red to carrot-red in color with a yellow hue at the base. The surface is indistinctly fibrous and turns blue when touched. Its flesh is similar to that of the hat. The basal mycelium is light yellow. Macrochemical reactions are not observed.

Look at the bottom of the hat.

Microscopic features

The basidia are 32–42 × 8–11 micrometers in size, club-like and four-pore. The spores have an ellipsoidal, unequal shape and a hillock . They grow to 9-10 (sometimes up to 11) × (sometimes 4) 4.5-5 micrometers in size and are light yellow to brownish yellow, smooth and do not stain with iodine ( inamyloid ). The hyphae of the hat trama are cylindrical and 3 to 8 micrometers wide. The thin-walled cheilocystids are spindle-shaped and bulbous to club-like with a small tip at the apex, rarely with a long horn. They grow to be 35–57 × 7–12 micrometers in size. The thin-walled pleurocystidia are 50–62 × 9–11 micrometers in size, are spindle-shaped to broad spindle-shaped and bellied with a slightly pointed apex. The top layer of the hat is a trichoderm with somewhat pearl-shaped constricted (moniliform) hyphae with cyst-like (cystoid) end cells. These are 23-50 × 7-10 micrometers in size. The flesh of the stalk consists of interwoven hyphae 4 to 10 micrometers wide. There are no buckles .

Ecology and phenology

Parvixerocomus aokii grows gregariously in tropical and subtropical forests from various beech plants.

distribution

Parvixerocomus aokii is only known from southern China (including the province of Hainan ) and Japan.

Systematics

Parvixerocomus aokii was first described by Tsuguo Hongo as Boletus aokii in 1984 . In 2015, the Chinese mycologists Gang Wu , Nian Kai Zeng and Zhu L. Yang established the new genus Parvixerocomus .

swell

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Gang Wu, Kuan Zhao, Yan-Chun Li, Nian-Kai Zeng, Bang Feng, Roy E. Halling, Zhu L. Yang: Four new genera of the fungal family Boletaceae . In: Fungal Diversity . tape 81 , no. 1 , November 2016, p. 1-24 , doi : 10.1007 / s13225-015-0322-0 ( researchgate.net ).
↑ Mycobank: Parvixerocomus aokii . Retrieved November 18, 2017 .

Web links

Commons : Parvixerocomus aokii - collection of images, videos and audio files

[Wu2016-1] ↑ ^a ^b ^c ^d ^e ^f Gang Wu, Kuan Zhao, Yan-Chun Li, Nian-Kai Zeng, Bang Feng, Roy E. Halling, Zhu L. Yang: Four new genera of the fungal family Boletaceae . In: Fungal Diversity . tape 81 , no. 1 , November 2016, p. 1-24 , doi : 10.1007 / s13225-015-0322-0 ( researchgate.net ).

[Mycobank-2] Mycobank: Parvixerocomus aokii . Retrieved November 18, 2017 .