Leucoagaricus orientiflavus, a new yellow lepiotoid species from southwestern China

Abstract

Leucoagaricus orientiflavus is described as new from southwestern China. It is characterized by a yellow pileus lacking plicate striations toward the margin, pure white lamellae, yellowish stipe and context, subamygdaliform basidiospores that are dextrinoid and lack a germ pore, cylindrico-clavate cheilocystidia, and a cutis-type pileipellis made up of radially arranged subcylindrical hyphae.

Full text

MYCOTAXON
Volume 111, pp. 121–126 January–March 2010
Leucoagaricus orientiflavus, a new yellow lepiotoid species
from southwestern China

zge@oeb.harvard.edu
1 Key Laboratory of Biodiversity and Biogeography
Kunming Institute of Botany, Chinese Academy of Sciences
Heilongtan, Kunming 650204, Yunnan, P. R. China
2 Harvard University Herbaria
Cambridge 02138, MA, USA
Leucoagaricus orientiflavus

       
          

Agaricales
Introduction
 LeucoagaricusAgaricaceaeAgaricales, Basidiomycota
Macrolepiota 
LeucocoprinusLeucoagaricus
   
         
      


Leucoagaricus Macrolepiota 

LeucoagaricusLeucocoprinus
Leucocoprinus
            
Leucoagaricus  




   

Leucoagaricus 
Materials and methods
    
          
        
 
   

         


             



 



Taxonomy
Leucoagaricus orientiflavus  

Pileus 30–80 mm latus, primo ovoideus, deinde convexus et convexo-applanatus, glaber,
raro rugulosus, luteolus, pallide flavus vel flavus. Lamellae liberae, albae, confertae. Stipes
50–105 × 6–13 mm, subflavus vel flavo-albidus. Sporae (6.0–)6.5–7.5 × (3.0–)3.5–4.0 µm,
amygdaliformiae. Basidia 17–24 × 6–7.5 µm, clavata, 4-sporigera. Acies lamellarum sterilis.
Cheilocystidia 28–43 × 9.0–11.0 µm, cylindrico-clavata vel anguste clavata. Pleurocystidia
nulla. Trama hymenophoralis subregularis, hyalina. Squamulae pilei ex epicute e hyphis
repentibus, subcylindricis compositae. Caro flavo-albida. Fibulae abscentes. Habitatio:
terrestris.
 

orienti-       -flavus  





        

Leucoagaricus orientiflavus... 
Leucoagaricus orientiflavus .




     
          
       






         




          

        
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         
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
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        
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       
 Z.W. Ge 2068HKAS 54265

 Leucoagaricus orientiflavus      
    
          
       
        
        

   Leucoagaricus    
         Sericeomyces
Sericeomyces
Leucoagaricus,

        Leucoagaricus
orientiflavus      La. serenus   
 SericeomycesLeucoagaricus orientiflavus

Leucoagaricus orientiflavus... 
La. serenus
La. orientiflavus
La. serenus


Leucoagaricus medioflavoides      


 
La.orientiflavus
La. medioflavoides

Leucoagaricus subflavus        
        La. orientiflavus 
La. subflavus

         

          
Leucocoprinus  La. orientiflavus Leucocoprinus birnbaumii 

           
        

Leucocoprinus flavus      
   La. orientiflavus      

Lc. flavus


Leucocoprinus straminellus

Lc. straminellus
  
          


Acknowledgements

La. subflavus


     
 




Literature cited
       Leucoagaricus viridiflavoides    

 Leucoagaricus bivelatus


Lepiotaceae
Lepiota
            Leucocoprineae  Lepioteae
BasidiomycotinaAgaricales
AgaricalesLeucoagaricus medioflavoides
deceptivus
. Lepiotaceae
Chamaemyces Chlorophyllum Cystolepiota Leucoagaricus Leucocoprinus Macrolepiota
MelanophyllumSericeomyces
  

       Leucoagaricus  Leucocoprinus Agaricales,
Basidiomycota
LeucoagaricusAgaricaceae

. Leucoagaricus lilaceusAgaricaceae

Agaricales
Leucoagaricus
Sericeomyces
Leucoagaricus

Agaricaceae

              
LeucoagaricusPiloselli
            Leucoagaricus
amanitoides
     Leucocoprinus flavus       

 CystodermateaeLeucocoprineae 
