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kasepuravik

Page history last edited by PBworks 16 years, 2 months ago

kasepuravik(ingliskeelne) (Leccinum scabrum) veel

Kased moodustavad mükoriisat väga paljude seeneliikidega. Looduses pisut ringi vaadanud inimesele on suve lõpupoolel kindlasti silma hakanud ilus pilt kaasikust, mille all punavad täpilised punased kärbseseened. Nendelgi on mükoriisa kaskedega (aga ka mitme teise puuliigiga). Eestis laialt levinud seeneliikidest elavad kaskedega sümbioosis veel mitmed puravikud (kasepuravik, pomerantspuravik, valge ja must puravik, kõivu-kivipuravik), pilvikud (kasepilvik, haisev pilvik, kollane ja tellispunane pilvik, õrn ja kahkjas pilvik) ja riisikad.

Kasepuravik (seen)

ladina keeles: Leccinum scabrum, Boletus scaber

inglise keeles: Brown Birch Bolete, Shaggy bolete, Rough-stemmed bolete, Common scaber stalk

Kirjeldus:

Kasepuravik, nagu nimigi ütleb, elab kaskedega sümbioosis.
Väheväärtuslik söögiseen, söödav värskelt (korja ainult noori seeni!)
Sks k Birkenpilz
Soome k lehmäntatti/löpö/koivutatti

Rootsi k björksopp/strävsopp

Leccinum scabrum (Fries) S.F. Gray

Nat. Arr. Brit. Pl. 1: 647. 1821.

Common Name: Birch Bolete

Pileus
Cap 5.0-14.0 cm broad, convex, broadly convex in age with a decurved margin; surface when young, dingy-tan, dull, matted-tomentose, subviscid, occasionally areolate; at maturity sometimes weathering glabrous, becoming viscid, medium-brown to dull olive-brown; context soft, up to 1.5 cm thick, cream-colored, unchanging or occasionally faintly pink or blue where cut or injured; odor and taste mild.

Hymenophore
Pores cream-buff to pale tan, bruising pale olive-buff, deeply depressed at the stipe; tubes 1-2 cm long, pallid when young, in age pale coco-brown, unchanging when cut or bruised.

Stipe
Stipe 8.0-14.0 cm long, 2.0-4.0 cm thick, clavate in youth, becoming subclavate to equal at maturity, solid, straight; surface of apex pruinose, pallid to cream, longitudinally ridged below, sometimes forming a coarse reticulum, ornamented with black squamules; partial veil absent.

Spores
Spores 14-18 x 5-6 µm, subfusoid to narrowly ellipsoid, smooth, thin-walled with variously-sized vacuolar inclusions; spore print dull brown.

Habitat
Solitary to scattered under ornamental birch (Betula spp.). fruiting in late summer in watered areas, again shortly after the fall rains.

Edibility
Edible, of fair quality. Many Leccinums are better after being dried.

Comments

Leccinum scabrum is recognized by a dull tan-brown to medium-brown cap that may be subviscid to viscid depending on conditions, and a context that normally does not blue when cut, or if so, only faintly. In California it appears to be restricted to ornamental birches (Betula spp.) planted in urban areas, and presumably was introduced on nursery rootstock. It often fruits with another birch-loving species, Lactarius pubescens var. betulae.