[Vol. 12 

 234 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



of suberect, somewhat interwoven, thin- walled, incrusted hyphae 

 2J^-3 (x thick, occasionally nodose-septate; no gloeocystidia; 

 cystidia not incrusted, tapering towards the apex, 3 ^ in di- 

 ameter, protruding 10-30 jx beyond the basidia; spores hyaline, 

 even, 4-5K X 3-4 (a. 



Fructifications 3-10 cm. long, 1-3 cm. wide, often surrounding 

 small twigs. 



On bark and wood of fallen Sambucus and other frondose 

 species. In Europe and throughout North America. Through- 

 out the year. Very common. 



This species is very common, and has become so well known to 

 mycologists early in their work, under its original name Cor- 

 ticium Sambuci that there has been a reluctance, which I feel 

 also, to call it Peniophora Sambuci, which its structure really 

 requires. Its cystidia have been termed sterile basidia and cys- 

 tidioles, but they differ in no morphological respect from the 

 cystidia of other species of Peniophora. The species occurs in 

 especially fine condition on Sambucus, and it is well to use such 

 specimens as standards for comparison. 



Specimens examined: 

 Exsiccati: Bartholomew, Fungi Col., 3135, 4715; Brinkmann, 



Westfalische Pilze, 10; Cavara, Fungi Longobardiae, 63, 213; 



Cooke, Fungi Brit., 408; Ell. & Ev., Fungi Col., 607, under the 



name Corticium scutellare; Krieger, Fungi Sax., 523; Romell, 



Fungi Scand., 35; Roumeguere, Fungi Gallici, 2911; Westen- 



dorp, Herb. Crypt. Beige, 588. 

 Sweden: Stockholm, L. Romell, 129, 200, and in Romell, Fungi 



Scand., 35. 

 Germany: Saxony, Krieger, Fungi Sax., 523; Westphalia, in 



Brinkmann, Westfalische Pilze, 10. 

 Austria: Tirol, Innsbruck, V. Litschauer. 

 Italy: Rome, G. Bresadola; Brixia, A. Marozzi, and Papia, F. 



Cavara, in Cavara, Fungi Longobardiae, 63 and 213 respec- 

 tively. 

 England: Forden, E. Vize, in Cooke, Fungi Brit., 408. 

 Belgium: Courtrai, in Westendorp, Herb. Crypt. Beige, 588. 

 France: Fautrey, comm. by Lloyd Herb., 4326, 4357; Bois de 



Vincennes, N. Patouillard (in N. Y. Bot. Gard. Herb., and 



