Rigidoporus Murrill 1905
Creators: name: Gomes-Silva, Allyne Christina
name: Medeiros, Priscila Sanjuan De
name: Soares, Adriene Mayra Da Silva
name: Sotão, Helen Maria Pontes
name: Ryvarden, Leif
name: Gibertoni, Tatiana Baptista
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Polyporales
Meripilaceae
Rigidoporus

description: Key to the species of Rigidoporus in the Neotropics   
1. Basidiomata pileate...................................................................................................................................................... 2  
- Basidiomata resupinate............................................................................................................................................... 13  
 2. Presence of an umbo that attaches the basidiomata to the substrate...................................................... R. umbonatipes   
- Absence of an umbo that attaches the basidiomata to the substrate............................................................................. 3  
 3. Basidiomata pale buff to cream, up to 6 cm thick; pores 5 − 6 per mm; basidiospores, 7−10 × 6.5−10 µm........................................................................................................................................................................................ R. ulmarius   
- Basidiomata of different colour, up to 1 cm thick; pores> 6 per mm; basidiospores <7 µm long............................. 4  
4. Thick-walled cystidia present...................................................................................................................................... 5  
- Thick-walled cystidia absent........................................................................................................................................ 8  
 5. Basidiomata tiny, less than 7 mm wide, pendant................................................................................... R. micropendulus   
- Basidiomata different and larger.................................................................................................................................... 6  
 6. Basidiomata laterally stipitate................................................................................................................... R. biokoensis   
- Basidiomata sessile to dimidiate.................................................................................................................................. 7  
 7. Pore surface cream to orange, basidiospores ellipsoidal................................................................................. R. andinus   
 - Pore reddish to buff when dry, basidiospores globose..................................................................................... R. lineatus   
 8. Pore surface bright to deep orange without a reddish tint, basidiomata often large and 0.5 − 2 cm thick at the base, growing in clusters................................................................................................................................... R. aurantiacus   
- Pore surface distinctly reddish, basidiomata small to medium, rarely above 1 cm thick................................................ 9  
 9. Basidiomata sessile to occasioanally resupinate..................................................................................... R. microporus   
- Basidiomata stipitate................................................................................................................................................... 10  
 10. Basidiospores 6 − 7 µm in diameter......................................................................................... R. grandisporus sp. nov.   
- Basidiospores <6 µm in diameter............................................................................................................................. 11  
 11. Basidiomata azonate, ochraceous; context white with black lines; pore surface isabelline; cystidiols 12–15 µm long ................................................................................................................................................................. R. amazonicus   
- Basidiomata zonate, diffetent colour; context without black lines, pore surface different colour; cystidiols absent 12  
 12. Basidiomata cinnamon, fulvous to snuff brown; pore surface fulvous; basidiospores globose 4–6 µm........................ ........................................................................................................................................................... R. mariae sp. nov.   
 - Basidiomata first white becoming brown to grey with age or drying; pore surface white; basidiospores globose 3–4 µm.............................................................................................................................................................. R. mutabilis   
13. Thick-walled cystidia and cystidiols absent............................................................................................................... 14  
- Thick-walled cystidia and cystidiols present.............................................................................................................. 15  
 14. Pores 8–10 per mm, turning reddish where bruised; basidiospores 5 − 6 (− 7) × 4 − 6 µm................. R. sanguinolentus   
 - Pores 5–7 per mm, not turning reddish when bruised; basidiospores 3.5 − 5.5 × 3.5 − 5 µm........................ R. crocatus   
 15. Basidiomata resupinate to efussed-reflexed, pale ochraceous buff to pinkish ochraceous; hyphal system pseudodimitic; basidiospores ovoid to subglobose 4 − 5.5 × 3 − 4 µm ............................................................. R. vinctus   
 - Basidiomata resupinate, isabelline to beige; hyphal system monomitic; basidiospores globose 5 − 5.5 (− 6)................. ....................................................................................................................................................................... R. undatus
description: Published as part of Gomes-Silva, Allyne Christina, Medeiros, Priscila Sanjuan De, Soares, Adriene Mayra Da Silva, Sotão, Helen Maria Pontes, Ryvarden, Leif & Gibertoni, Tatiana Baptista, 2014, Two new species of Rigidoporus (Agaricomycetes) from Brazil and new records from the Brazilian Amazonia, pp. 191-200 in Phytotaxa 156 (4) on page 198, DOI: 10.11646/phytotaxa.156.4.1, http://zenodo.org/record/5127958