Steppe grass stalk porling

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Steppe grass stalk porling
Steppe grass stem porling in Oklahoma

Steppe grass stem porling in Oklahoma

Systematics
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Stalk porlings (Polyporales)
Family : Stalk porling relatives (Polyporaceae)
Genre : Picipes
Type : Steppe grass stalk porling
Scientific name
Picipes rhizophilus
( Pat. ) JL Zhou & BK Cui

The steppe grass or root stem porling ( Picipes rhizophilus , syn .: Polyporus rhizophilus ) is a very rare type of fungus in Germany from the family of stem porling relatives (Polyporaceae). The fruiting bodies are barely larger than 3 cm and appear on the root ball of old tufts of various steppe grasses.

features

Macroscopic features

The steppe grass stalk porling forms quite small fruiting bodies. The 1–3 (–4) cm wide hat is rounded, initially arched and later flat or sometimes indented somewhat like a navel. The edge is sharply set off to a little rolled up and sometimes slightly lobed. Dried fruit bodies often appear irregularly bent with age. The initially whitish, then pale ocher to cream-colored hat skin is smooth to slightly wrinkled and finely velvety. It differs little from hat meat . The white to pale cream-colored Huttrama is only 2-4 mm thick, thinner at the edge and has a leathery, fleshy consistency. More rarely, the surface indicates yellowed scales. The tubes on the underside of the hat are initially white and later cream to dirty yolk yellow. They are 1–1.5 (–2) mm long and are correspondingly shorter at the base and edge of the hat. The mouths of the same color are quite large at 0.5–1 x 0.25–0.5 mm; There is usually space for 3–4 pores per mm². The pores are irregularly elliptical-edged to honeycomb and run wide, sometimes down to the base of the stem. Rauschert the appearance is reminiscent of the reddening sap tangle ( Abortiporus biennis ). The (1–) 2–2.5 (–3) cm long and (2–) 3–5 (–6) mm thick stem is attached centrally to eccentrically on the hat. It is often a little bent, full-bodied and, more rarely, a little hollow. The stem base is moderately thickened and sits on the ground-level to shallow underground parts of the steppe grasses. The stem bark is smooth, whitish towards the cap and blackish sooty to black-brown from the base.

Microscopic features

The hyphae system is dimitic. The generative hyphae are thin-walled, 3-5 (-7) micrometers wide and have buckles on the septa. The skeletal hyphae are thick-walled, branched and measure 2-5 μm in diameter. Cystidia are absent. On the 15–28 x 4.5–6 µm large, club -shaped and hyaline basidia, elliptical to spindle-shaped spores that are slightly pointed at the base ripen . These are also hyaline, smooth-walled and usually filled with 1 (–2) drops of oil. The spore dimensions given in the literature (quote from Rauschert) differ from one another:

Authors Spore length Spur width
Bondarzev (1952) 7.5-10 (-11) µm 3-4 (-4.5) µm
Łuszczyński & Łuszczyńska (2010) 6-10 µm (2-) 3-4 µm
Moesz (1913) 9-13 µm 3-4.5 µm
Pilat (1936) 6-7.5 µm 2.5-3 µm
Patouillard (1894)
Hruby (1931) 		10-12 µm 4 μm
Rauschert (1962) 8-9.5 µm 3.5-4 µm
Zerova (1957) 9-11 (-12) µm 4-4.5 (-5) µm

Ecology and phenology

The hair awl plays an important role in the substrate spectrum of the root.

The steppe grass stalk porling lives on the base of old tufts of various steppe grasses. As substrates calls Rauschert species of feather grass ( Stipa ), especially the hair esparto ( Stipa capillata ) next Stipa joannis , the Yellow Schei digestion feather grass ( Stipa pulcherrima ), Stipa lessingiana that Gray-green couch grass ( Elymus hispidus ) and other mercury species ( Elymus sp .), the common beard grass ( Bothriochloa ischaeum ), the common dog-tooth grass ( Cynodon dactylon ) and the finger millet ( Digitaria sp.). Rauschert himself found the fruiting bodies of the steppe stem porling on Walliser sheep fescue ( Festuca valesiaca ). It is unclear whether the fungus lives on it parasitically or purely as saprobionics . Like its host grasses, the species inhabits steppes and dry grasslands .

The fruiting bodies appear in late autumn or early spring.

distribution

The steppe grass stem porling is a type of dry, warm steppe areas and occurs in the Eurasian steppe zone and in North Africa (Algeria - the origin of the type material ). It was found in Germany (Merseburg area - the westernmost place of discovery), Switzerland, Hungary, the Czech Republic, Slovakia, Russia, Ukraine and Kazakhstan.

annotation

  1. ↑ According to the author, the measurements do not give any statistically reliable values, as only isolated spores were found; they correspond best to Bondarzev's statements.

swell

  • Josef Breitenbach, Fred Kränzlin (Ed.): Mushrooms of Switzerland. Contribution to knowledge of the fungal flora in Switzerland. Volume 2: Heterobasidiomycetes (gelatinous mushrooms), Aphyllophorales (non-leaf mushrooms), Gastromycetes (belly mushrooms). Mykologia, Luzern 1986, ISBN 3-85604-020-X .
  • Stephan Rauschert: Polyporus rhizophilus Pat., A steppe mushroom new for Germany . In: Westphalian mushroom letters . tape III , no. 4 . Heiligenkirchen / Detmold 1962 ( PDF; 460 KB ).

Individual evidence

  1. ↑ a b Janusz Luszczynski, Bożena Luszczynska: Contribution to morphology and ecology of Polyporus rhizophilus . In: Acta Mycologica . tape 45 , no. 2 , 2010, p. 151–156 ( PDF; 227 KB ).

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