Aleurodiscus

 Aleurodiscus oakesii, photographed by Dany Vallières.

Belongs within: Agaricomycetes.

The Stereaceae is a group of fungi producing usually non-stalked fruiting bodies, often growing on wood. Phylogenetic analysis suggests that the genus Aleurodiscus is paraphyletic to other genera in the family (Binder et al. 2005).

Characters (from Cannon & Kirk 2007, for Stereaceae): Basidiomata appressed, effused-reflexed or discoid, rarely stalked, the outer surface often zoned, usually leathery or waxy. Hyphal system dimitic (rarely trimitic), typically differentiated into a hairy or hirsute outer skin, a closely woven cortex, and loose hyphae curving up to the hymenium, hyphae with simple septa, thick-walled cystidia common. Hymenium smooth to tuberculate or rugose. Basidia small and narrow, 4-spored, sometimes accompanied by ornamented paraphysis-like hyphae. Basidiospores ellipsoidal to cylindrical, hyaline, smooth, sometimes staining in iodine.

<==Aleurodiscus Rabenh. ex Schröt. 1888 (nom. cons.) (see below for synonymy)KC01
    |--+--+--A. amorphusBH05
    |  |  `--A. grantiiBH05
    |  `--+--A. penicillatusBH05
    |     `--+--A. weiriiBH05
    |        `--Acanthobasidium Oberw. 1966BH05, KC01
    |             |--A. norvegicumBH05
    |             `--A. phragmitisBH05
    `--+--A. oakesiiBH05
       `--+--A. mirabilisBH05
          `--+--+--A. abietisBH05
             |  `--‘Gloeocystidiellum’ leucoxanthumBH05
             `--+--+--Acanthophysium (Pilát) Cunn. 1963BH05, KC01
                |  |    `--A. lividocaeruleumBH05
                |  `--Xylobolus Karst. 1881BH05, KC01
                |       |--X. subpileatusBH05
                |       `--+--X. frustulatusBH05
                |          `--X. annosum [=Stereum annosum]BH05
                `--+--A. botryosusBH05
                   `--+--+--A. cerrusatus [=Acanthophysium cerrusatum]BH05
                      |  |--A. lapponicusBH05
                      |  `--A. laurentinusBH05
                      `--+--+--Acanthophysium bisporumBH05
                         |  `--Acanthofungus rimosusBH05
                         `--Stereum Pers. 1794BH05, KC01 [incl. Haematostereum Pouzar 1959KC01, Naematelia Fr. 1822 (n. d.)KC01]
                              |  i. s.: S. frustulatumKC01
                              |         S. lobatumJ87
                              |         S. ostreaBH05
                              |         S. sanguinolentumKC01
                              |         S. subpileatumRS99
                              |         S. subtomentosumBH05
                              |         S. taxodiiKC01
                              |--+--S. armeniacumBH05
                              |  `--S. hirsutumBH05
                              `--+--S. gausapatumBH05
                                 `--S. rugosumBH05

Aleurodiscus Rabenh. ex Schröt. 1888 (nom. cons.) [incl. Gloeosoma Bres. 1920, Michenera Berk. & Curtis 1868, Nodularia Peck 1872 nec Mertens 1822 nec Conrad 1853 (ICZN)]KC01

*Type species of generic name indicated

References

[BH05] Binder, M., D. S. Hibbett, K.-H. Larsson, E. Larsson, E. Langer & G. Langer. 2005. The phylogenetic distribution of resupinate forms across the major clades of mushroom-forming fungi (Homobasidiomycetes). Systematics and Biodiversity 3 (2): 113–157.

Cannon, P. F., & P. M. Kirk. 2007. Fungal Families of the World. CABI.

[J87] Judd, W. S. 1987. Floristic study of Morne La Visite and Pic Macaya National Parks, Haiti. Bulletin of the Florida State MuseumBiological Sciences 32 (1): 1–136.

[KC01] Kirk, P. M., P. F. Cannon, J. C. David & J. A. Stalpers. 2001. Ainsworth & Bisby’s Dictionary of the Fungi 9th ed. CAB International: Wallingford (UK).

[RS99] Rossman, A. Y., G. J. Samuels, C. T. Rogerson & R. Lowen. 1999. Genera of Bionectriaceae, Hypocreaceae and Nectriaceae (Hypocreales, Ascomycetes). Studies in Mycology 42: 1–248.

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