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Butyriboletus Appendiculatus Sp-JR-P1-VU-14-12-14.Pub BUTYRIBOLETUS APPENDICULATUS Nom de référence : Butyriboletus appendiculatus (Schaeff .) Synonymes : Boletus appendiculatus (Schaeff.) Tubiporus appendiculatus (Schaeff.) Maire Classifica on : Division : Basidiomycota Ordre : Boletales Famille : Boletaceae Nom fran!ais : bolet appendiculé. Intér#t culinaire : comes ble. 1-DESCRIPTION 1-1 Silhoue(e : au sol, de dimension moyenne " grande avec un pied central surmonté d$un chapeau convexe. Couleur dominante : brun-(aun)tre. 1-2 Chapeau : de 6 " 20 cm, hémisphéri-ue puis convexe plus ou moins bosselé. Son rev.tement lég/rement velouté " feutré, sec, un peu cra-uelé avec l$)ge, est de couleur brun-(aun)tre " brun foncé, immuable. 1a marge aigu2, incurvée et lég/rement débordante, est concolore au rev.tement. 1-3 Pied ou s pe : de 3-12 (15) x 2-3,5-(6) cm. Cylindri-ue parfois un peu ventru mais tou(ours aminci " la base ou parfois radicant, il est plein et ferme, sec. Sa sur- face de couleur (aune p)le " (aune-ochracé, brunissant vers la base, est ornée d$un 7n réseau de mailles hexagonales concolores, plus l)ches dans la moi é inférieure et vers la base. 1-, Chair : épaisse et ferme, devenant vite véreuse, elle est de couleur (aune p)le bleuissant un peu apr/s la coupe, lég/rement lie-de-vin sous le rev.tement 8 elle est (aune-ochracé dans le pied et m.me brun-rouge)tre vers la base et se teinte de brun-rouge)tre dans les endroits a9a-ués par les insectes. Odeur agréable de noix, saveur douce. 1-5 Tu.es et pores : adnés-arrondis " l$inser on sur le pied, les tubes sont facilement séparables de la chair du chapeau 8 ils sont (aunes puis verd)tres, et abou s- sent " des pores pe ts, ronds, colorés en (aune soufre puis en verd)tre, ils bleuissent tr/s peu au toucher. Ensuite les pores brunissent avec l$)ge. 1-6 Sporée : brun olive. 1-0 1a.itat 2 bois m.lés, sous feuillus (ch.nes, fr.nes;) plut<t sur sol calcaire, ce champignon vient isolément ou par groupe de trois ou -uatre individus. Eté Au- tomne. 1-8 Répar on : peu fré-uent. 2-OBSER4ATIONS 1es bolets comportent -uel-ues esp/ces toxi-ues, d$autres sont immangeables " cause de leur amertume. 1a famille Boletaceae est cons tuée de champignons " chair tendre, " tubes et pores. 1es tubes sont facilement séparables de la chair du chapeau. Ceci les dis- ngue des polypores dont la chair est généralement coriace et dont les tubes font par e de la chair du chapeau (sauf Fistulina hepaca ). Cependant -uel-ues Boletaceaes des genres Suillus et Gyrodon ont les tubes pas ou peu séparables. 3-INTER5T Comes ble de grande -ualité valant pres-ue le c/pe de Bordeaux entre autres. ,-RIS6UES DE CON7USION Il ressemble beaucoup " Boletus subappendiculatus -ui a lui son habitat sous les sapins des régions montagneuses, et " d$autres bolets de la sec on des Appendi- cula. Vérifié le 27 novembre 2014 .
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