Pulvereum flywheel (Cyanoboletus pulverulentus)
- Division: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Classis: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Boletales (Boletales)
- Genus: Boletaceae (Boletaceae)
- Genus: Cyanoboletus (Cyanobolete)
- Type: Cyanoboletus pulverulentus (Powreded flywheel)
- Pulvereum flywheel
- Bolet est pulverulenta
Description:
Hat: 3—8 (10) cm diametro, primo hemisphaerico, dein convexo, margine tenui revoluto, in senectute margine elevato, matte, velutino, in humido lubrico, color magis varius et saepe heterogeneus; margine leviore brunneo, griseo -brunneo, griseo-flavo, obscure brunneo, rubro-brunneo.
Tegumen grosse porosum, adhaerens vel leviter descendens, primo flavum (characteristicum), postea ochraceo-flavum, flavo-brunneum.
Pulvis sporae luteo-oleae.
Crus: 7—10 cm longis et 1—2 cm diametro, deorsum inflatis vel expansis, ad basin saepe attenuatis, in summo flavescentibus, in media parte subtiliter punctato colore rubro-brunneis pulverulentis punctatis; ad basin rubro-brunneo-brunneo, tonis ferrugineo-brunneis incisis intense caeruleis, dein caeruleo vel subnigrante.
Pulpa: firma, flavus, in sectis, tota pulpa cito obscurum caeruleum, caeruleum colorem (characteristicum), cum jucundo raro odore et sapore mite.
communi;
Ab Augusto ad Septembrem silvae deciduae et mixtae (saepe cum quercu et abiegnis), saepius in coetibus et singulis, rarius, saepius in regionibus calidis australibus (in Caucaso, Ucraina, in extremo Oriente).
Similitudo:
Volcanus pulverulentus similis est fungorum Poloniae, qui frequentior est in medio laneo, a quo differt in hymenopho flavescente, in caule flavo vario et in locis sectis incisis velox et vehemens caeruleus. Differt a Duboviki caeruleo (cum hymenophore rubro) a luteo strato tubuloso. Differt ab aliis Boletus (Boletus radicans) in absentia reticuli in crure.