Inonotus, P.Karst.

X, Vitor, Lima, avier de, T, Virton Rodrigo, Oliveira, argino de, C, Nelson, Lima-Júnior, orreia de, C., José Ribamar, Oliveira-Filho, Santos, Carla, Lima, Nelson & Gibertoni, Tatiana Baptista, 2022, Taxonomy and phylogenetic analysis reveal one new genus and three new species in Inonotus s. l. (Hymenochaetaceae) from Brazil, Cryptogamie, Mycologie 20 (1), pp. 1-21 : 18-19

KEY TO INONOTUS S.L.

1. Hyphal system monomitic throughout; setal hyphae present or absent................................... Inonotus P.Karst.

— Hyphal system dimitic in the tube; setal hyphae absent ................................................................................. 2

2. Context and tube trama dimitic; hymenial setae strongly ventricose and dark; dark line present, soon exposed as a dark crust ............................................................................................ Sclerotus Xavier de Lima , gen. nov.

— Context mono-dimitic; tube trama dimitic; dark line in the context present or absent, if present, bellow the mat/tomentum; hymeniael setae variable, rarely absent ....................................... Sanghuangporus / Tropicoporus

KEY TO INONOTUS IN BRAZIL

1. Any kind of setae absent.............................................................................................................................. 2

— Setae present in hymenium or/and in tube trama ........................................................................................ 8

2. Resupinate species ....................................................................................................................................... 3

— Pileate species .............................................................................................................................................. 4

3. Pores 3-4/mm ........................................................................................................... I. venezuelicus Ryvarden

— Pores 7-8/mm ........................................................................................................... I. costaricensis Ryvarden

4. Pores 7-8/mm ........................................................................................ I. luteoumbrinus (Romell) Ryvarden

— Pores 1-6/mm ............................................................................................................................................. 5

5. Pores irregular, 1-3/mm................................................................................. I. dentatus Decock & Ryvarden

— Pores regular, round to angular.................................................................................................................... 6

6. Basidiospores 7-8 x 6-7 Μm ........................................................................................ I. neotropicus Ryvarden

— Basidiospores up to 6 Μm in longest dimension ........................................................................................... 7

7. Pore surface yellow to rusty brown; basidiospores hyaline to pale yellow........ I. splitgerberi (Mont.) Ryvarden

— Pore surface dull purplish brown; basidiospores rusty brown ............................................. I. porrectus Murrill

8. Tramal setae present; hymenial absent or present......................................................................................... 9

— Tramal setae absent; hymenial present ....................................................................................................... 19

9. Hymenial setae absent ............................................................................................................................... 10

— Hymenial setae present.............................................................................................................................. 13

10. Pores 3-4/mm .................................................................................................. I. patouillardii (Rick) Imazeki

— Pores 7-10/mm ......................................................................................................................................... 11

11. Tramal setae 6-8 Μm wide......................... I. parvisetus V.R.T. Oliveira, Xavier de Lima & Gibertoni , sp. nov.

— Tramal setae wider, up to 35 Μm................................................................................................................ 12

12. Basidioma applanate to slightly convex, brown...................................... I. amazonicus Gibertoni & Ryvarden

— Basidioma trequitreous, yellowish................................................... I. brasiliensis Xavier de Lima & Ryvarden

13. Pileate species ............................................................................................................................................ 14

— Resupinate species ..................................................................................................................................... 17

14. Tramal setae branched ........................................................................................ I. cuticularis (Bull.) P. Karst.

— Tramal setae unbranched ........................................................................................................................... 15

15. Pores 8-10/mm ........................................................................ I. portoricensis (Overh.) Baltazar & Gibertoni

— Pores 2-6/mm ........................................................................................................................................... 16

16. Pores 2-3/mm; basidiospores 6-8.5 Μm long...................................................................... I. rickii (Pat.) Reid

— Pores 4-6/mm; basidiospores 5-6 Μm long......................................................... I. pseudoglomeratus Ryvarden

17. Basidiospores 7-8 Μm long .............................................................................................. I. adnatus Ryvarden

— Basidiospores 8.5-13 Μm long ................................................................................................................... 18

18. Basidiospores 8.5-11.5 Μm long, hymenial setae 33-45 Μm long ............. I. multisetifer Abrahão & Gugliotta

— Basidiospores 10-13 Μm long, hymenial setae 20-32 Μm long ................... I. micantissimus (Rick) Rajchemb.

19. Hymenial setae hooked ............................................................................................................................. 20

— Hymenial setae straight ............................................................................................................................. 21

20. Pileus surface strigose; setae 30-55 Μm long.................................................................. I. fulvomelleus Murrill

— Pileus surface tomentose to glabrous; setae 14-35 Μm long ............................... I. radiatus (Sowerby) P. Karst.

21. Pileus surface adpressed velutinate; pore surface rusty brown....................... I. pseudoradiatus (Pat.) Ryvarden

— Pileus surface scrupose; pore surface yellow .............................................................. I. xanthoporus Ryvarden