Name: Trametes betulina
Author: (L.) Pilát
Citation: Atlas Champ. l’Europe, Ill, Polyporaceae (Praha) 1: 262 (1939)
Deprecated Synonyms: Lenzites betulinus (L.) Fr., Agaricus flaccidus Bull., Agaricus hirsutus Schaeff., Agaricus tomentosus Lam., Boletus versicolor Vent., Cellularia betulina (L.) Kuntze, Cellularia cinnamomea (Fr.) Kuntze, Cellularia flaccida (Bull.) Kuntze, Cellularia hirsuta (Schaeff.) Kuntze, Cellularia interrupta (Fr.) Kuntze, Cellularia junghuhnii (Lév.) Kuntze, Cellularia pinastri (Kalchbr.) Kuntze, Cellularia sorbina (P. Karst.) Kuntze, Cellularia umbrina (Fr.) Kuntze, Daedalea betulina (L.) Rebent.), Daedalea cinnamomea (Fr.) E.H.L. Krause, Daedalea flaccida (Bull.) E.H.L. Krause, Daedalea interrupta Fr., Daedalea variegata Fr., Gloeophyllum cinnamomeum (Fr.) P. Karst., Gloeophyllum hirsutum (Schaeff.) Murrill, Lenzites berkeleyi Lév., Lenzites betuliniformis Murrill, Lenzites cinnamomea Fr., Lenzites connata Lázaro Ibiza, Lenzites cyclogramma Pat., Lenzites flaccida (Bull.) Fr., Lenzites hispida Lázaro Ibiza, Lenzites isabellina Lloyd, Lenzites junghuhnii Lév., Lenzites ochracea Lloyd, Lenzites pertenuis Lloyd, Lenzites pinastri Kalchbr., Lenzites sorbina P. Karst., Lenzites umbrina Fr., Lenzites variegata (Fr.) Fr., Merulius betulinus (L.) Wulfen, Merulius squamosus Schrad., Sesia hirsuta (Schaeff.) Murrill, Apus coriaceus (J.F. Gmel.) Gray
Pileus thin, coriaceous, sessile, dimidiate to flabelliform, imbricate, eonchate, 3-4 X 4-7 X 0.3-1 em.; surface conspicu- ously tomentose, velvety, multizonate, somewhat uneven, often radiate-rugose to plicate, avellaneous with latericeous zones, becoming olivaceous with age; margin thin, undulate to lobed at times; context very thin, white, membranous, scarcely a mm. thick; furrows slightly anastomosing when very young, 1—2 mm. broad, 3-10 mm. deep, edges thin, entire to undulate, slightly notched with age, cremeous within, ochroleucous to sordid- ochraceous without; spores globose, smooth, hyaline, 6 p.
Common in California on decayed wood of oak, alder, and other deciduous trees. It may be expected also on coniferous wood at times.
Other problems with these kind of Name changes:
- Both Index Fungorum and MycoBank list Lenzites betulina/betulinus as current;
- Another user can simply re-create Lenzites betulina/betulinus, which will not have any indication whether it’s the Preferred MO Name.
Moral: Please don’t edit Names — especially the Scientific Name field — until you’ve used MO for a long time (6 weeks is way too short) and unless you are 100% certain you know all the side-effects. Instead, add a Comment and/or type a note in the Notes on Taxonomy.
This affects some 200+ observations. Are we certain that everyone who has ever proposed this name agrees and would willingly change their name to Lenzites betulina if they had the time? If so, then by all means let’s make this sweeping change. It will save us a lot of time. Way faster than proposing and voting on that many observations!
But please contact the admins first. I just want to make sure it is a group decision that everyone is on board with.
If there has already been a discussion on facebook or elsewhere, that would probably suffice. Just include that in your comment in the future, and I’ll let it go.
Lenzites betulina belongs in Trametes, see:
Justo, A. & Hibbett, D.S. (2011). Phylogenetic classification of Trametes (Basidiomycota, Polyporales) based on a five-marker dataset. Taxon 60(6): 1567-1583.